https://gentleman.cnes.fr/index.php?action=history&feed=atom&title=MethodsMethods - Historique des versions2026-04-28T15:54:21ZHistorique des versions pour cette page sur le wikiMediaWiki 1.43.8https://gentleman.cnes.fr/index.php?title=Methods&diff=90&oldid=prevAdmin le 7 septembre 2021 à 11:582021-09-07T11:58:21Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Version précédente</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version du 7 septembre 2021 à 11:58</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''2. TLE building:'''</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''2. TLE building:'''</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:Once this trajectory has been computed, <font color=#556B2F>'''GENTLEMAN'''</font> will generate one or several <font color=#FF8C00 title="Two Lines Elements">TLEs</font>. The basic methods to build these <font color=#FF8C00 title="Two Lines Elements">TLEs</font> are the ones proposed by [http://patrius.cnes.fr PATRIUS] ('''Differential''' or '''Levenberg Marquardt''' methods). But, <font color=#556B2F>'''GENTLEMAN'''</font> adds a complementary functionality as it allows finding the best compromise on the amount of points to fit a <font color=#FF8C00 title="Two Lines <del style="font-weight: bold; text-decoration: none;">Element</del>">TLE</font> thanks to the propagated trajectory.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:Once this trajectory has been computed, <font color=#556B2F>'''GENTLEMAN'''</font> will generate one or several <font color=#FF8C00 title="Two Lines Elements">TLEs</font>. The basic methods to build these <font color=#FF8C00 title="Two Lines Elements">TLEs</font> are the ones proposed by [http://patrius.cnes.fr PATRIUS] ('''Differential''' or '''Levenberg Marquardt''' methods). But, <font color=#556B2F>'''GENTLEMAN'''</font> adds a complementary functionality as it allows finding the best compromise on the amount of points to fit a <font color=#FF8C00 title="Two Lines <ins style="font-weight: bold; text-decoration: none;">Elements</ins>">TLE</font> thanks to the propagated trajectory.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Let us give an example with a trajectory ephemeris (included in the [https://www.sqlite.org SQlite] file) composed of 50 output points.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Let us give an example with a trajectory ephemeris (included in the [https://www.sqlite.org SQlite] file) composed of 50 output points.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* A first possibility is to fit a <font color=#FF8C00 title="Two Lines <del style="font-weight: bold; text-decoration: none;">Element</del>">TLE</font> by giving explicitly the amount of points to take into account: for example, the ten first ones.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* A first possibility is to fit a <font color=#FF8C00 title="Two Lines <ins style="font-weight: bold; text-decoration: none;">Elements</ins>">TLE</font> by giving explicitly the amount of points to take into account: for example, the ten first ones.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* A second possibility is to leave <font color=#556B2F>'''GENTLEMAN'''</font> to find this amount of points for such a fitting. To do it, <font color=#556B2F>'''GENTLEMAN'''</font> will compute different <font color=#FF8C00 title="Two Lines Elements">TLEs</font> using 1, then 2, then 3, then up to 50 points (or less if the user entered a maximum number). Considering each of these <font color=#FF8C00 title="Two Lines Elements">TLEs</font>, <font color=#556B2F>'''GENTLEMAN'''</font> will compute for each point of the trajectory (or less if the user entered another maximum number), the difference between the trajectory and the one propagated with the <font color=#FF8C00 title="Two Lines <del style="font-weight: bold; text-decoration: none;">Element</del>">TLE</font> as initial condition and the model linked to it ('''SGP4''' for <font color=#FF8C00 title="Low Earth Orbit">LEO</font> and '''DeepSDP4''' for <font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>). <font color=#556B2F>'''GENTLEMAN'''</font> will then select the <font color=#FF8C00 title="Two Lines <del style="font-weight: bold; text-decoration: none;">Element</del>">TLE</font> which will get the lowest value for the mean error in semi major axis.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* A second possibility is to leave <font color=#556B2F>'''GENTLEMAN'''</font> to find this amount of points for such a fitting. To do it, <font color=#556B2F>'''GENTLEMAN'''</font> will compute different <font color=#FF8C00 title="Two Lines Elements">TLEs</font> using 1, then 2, then 3, then up to 50 points (or less if the user entered a maximum number). Considering each of these <font color=#FF8C00 title="Two Lines Elements">TLEs</font>, <font color=#556B2F>'''GENTLEMAN'''</font> will compute for each point of the trajectory (or less if the user entered another maximum number), the difference between the trajectory and the one propagated with the <font color=#FF8C00 title="Two Lines <ins style="font-weight: bold; text-decoration: none;">Elements</ins>">TLE</font> as initial condition and the model linked to it ('''SGP4''' for <font color=#FF8C00 title="Low Earth Orbit">LEO</font> and '''DeepSDP4''' for <font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>). <font color=#556B2F>'''GENTLEMAN'''</font> will then select the <font color=#FF8C00 title="Two Lines <ins style="font-weight: bold; text-decoration: none;">Elements</ins>">TLE</font> which will get the lowest value for the mean error in semi major axis.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* In case of maneuvers to take into account or if the user decided to compute several <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (for example one <font color=#FF8C00 title="Two Lines <del style="font-weight: bold; text-decoration: none;">Element</del>">TLE</font> by day), this process will be executed only in the interval between two <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (or one <font color=#FF8C00 title="Two Lines <del style="font-weight: bold; text-decoration: none;">Element</del>">TLE</font> and the next maneuver).</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* In case of maneuvers to take into account or if the user decided to compute several <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (for example one <font color=#FF8C00 title="Two Lines <ins style="font-weight: bold; text-decoration: none;">Elements</ins>">TLE</font> by day), this process will be executed only in the interval between two <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (or one <font color=#FF8C00 title="Two Lines <ins style="font-weight: bold; text-decoration: none;">Elements</ins>">TLE</font> and the next maneuver).</div></td></tr>
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</table>Adminhttps://gentleman.cnes.fr/index.php?title=Methods&diff=56&oldid=prevAdmin le 7 septembre 2021 à 08:402021-09-07T08:40:36Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Version précédente</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version du 7 septembre 2021 à 08:40</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l3">Ligne 3 :</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''1. Propagation:'''</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''1. Propagation:'''</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit"><del style="font-weight: bold; text-decoration: none;">LEO</del></font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a [https://www.sqlite.org SQlite] data base with an output step defined by the user.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit"><ins style="font-weight: bold; text-decoration: none;">GEO</ins></font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a [https://www.sqlite.org SQlite] data base with an output step defined by the user.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''2. TLE building:'''</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''2. TLE building:'''</div></td></tr>
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</table>Adminhttps://gentleman.cnes.fr/index.php?title=Methods&diff=31&oldid=prevAdmin le 7 septembre 2021 à 07:432021-09-07T07:43:56Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Version précédente</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version du 7 septembre 2021 à 07:43</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l9">Ligne 9 :</td>
<td colspan="2" class="diff-lineno">Ligne 9 :</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:Once this trajectory has been computed, <font color=#556B2F>'''GENTLEMAN'''</font> will generate one or several <font color=#FF8C00 title="Two Lines Elements">TLEs</font>. The basic methods to build these <font color=#FF8C00 title="Two Lines Elements">TLEs</font> are the ones proposed by [http://patrius.cnes.fr PATRIUS] ('''Differential''' or '''Levenberg Marquardt''' methods). But, <font color=#556B2F>'''GENTLEMAN'''</font> adds a complementary functionality as it allows finding the best compromise on the amount of points to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> thanks to the propagated trajectory.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:Once this trajectory has been computed, <font color=#556B2F>'''GENTLEMAN'''</font> will generate one or several <font color=#FF8C00 title="Two Lines Elements">TLEs</font>. The basic methods to build these <font color=#FF8C00 title="Two Lines Elements">TLEs</font> are the ones proposed by [http://patrius.cnes.fr PATRIUS] ('''Differential''' or '''Levenberg Marquardt''' methods). But, <font color=#556B2F>'''GENTLEMAN'''</font> adds a complementary functionality as it allows finding the best compromise on the amount of points to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> thanks to the propagated trajectory.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Let us give an example with a trajectory ephemeris (included in the SQlite file) composed of 50 output points.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Let us give an example with a trajectory ephemeris (included in the <ins style="font-weight: bold; text-decoration: none;">[https://www.sqlite.org </ins>SQlite<ins style="font-weight: bold; text-decoration: none;">] </ins>file) composed of 50 output points.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* A first possibility is to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> by giving explicitly the amount of points to take into account: for example, the ten first ones.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* A first possibility is to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> by giving explicitly the amount of points to take into account: for example, the ten first ones.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* A second possibility is to leave <font color=#556B2F>'''GENTLEMAN'''</font> to find this amount of points for such a fitting. To do it, <font color=#556B2F>'''GENTLEMAN'''</font> will compute different <font color=#FF8C00 title="Two Lines Elements">TLEs</font> using 1, then 2, then 3, then up to 50 points (or less if the user entered a maximum number). Considering each of these <font color=#FF8C00 title="Two Lines Elements">TLEs</font>, <font color=#556B2F>'''GENTLEMAN'''</font> will compute for each point of the trajectory (or less if the user entered another maximum number), the difference between the trajectory and the one propagated with the <font color=#FF8C00 title="Two Lines Element">TLE</font> as initial condition and the model linked to it ('''SGP4''' for <font color=#FF8C00 title="Low Earth Orbit">LEO</font> and '''DeepSDP4''' for <font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>). <font color=#556B2F>'''GENTLEMAN'''</font> will then select the <font color=#FF8C00 title="Two Lines Element">TLE</font> which will get the lowest value for the mean error in semi major axis.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* A second possibility is to leave <font color=#556B2F>'''GENTLEMAN'''</font> to find this amount of points for such a fitting. To do it, <font color=#556B2F>'''GENTLEMAN'''</font> will compute different <font color=#FF8C00 title="Two Lines Elements">TLEs</font> using 1, then 2, then 3, then up to 50 points (or less if the user entered a maximum number). Considering each of these <font color=#FF8C00 title="Two Lines Elements">TLEs</font>, <font color=#556B2F>'''GENTLEMAN'''</font> will compute for each point of the trajectory (or less if the user entered another maximum number), the difference between the trajectory and the one propagated with the <font color=#FF8C00 title="Two Lines Element">TLE</font> as initial condition and the model linked to it ('''SGP4''' for <font color=#FF8C00 title="Low Earth Orbit">LEO</font> and '''DeepSDP4''' for <font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>). <font color=#556B2F>'''GENTLEMAN'''</font> will then select the <font color=#FF8C00 title="Two Lines Element">TLE</font> which will get the lowest value for the mean error in semi major axis.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* In case of maneuvers to take into account or if the user decided to compute several <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (for example one <font color=#FF8C00 title="Two Lines Element">TLE</font> by day), this process will be executed only in the interval between two <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (or one <font color=#FF8C00 title="Two Lines Element">TLE</font> and the next maneuver).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* In case of maneuvers to take into account or if the user decided to compute several <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (for example one <font color=#FF8C00 title="Two Lines Element">TLE</font> by day), this process will be executed only in the interval between two <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (or one <font color=#FF8C00 title="Two Lines Element">TLE</font> and the next maneuver).</div></td></tr>
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</table>Adminhttps://gentleman.cnes.fr/index.php?title=Methods&diff=30&oldid=prevAdmin le 7 septembre 2021 à 07:432021-09-07T07:43:08Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Version précédente</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version du 7 septembre 2021 à 07:43</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l3">Ligne 3 :</td>
<td colspan="2" class="diff-lineno">Ligne 3 :</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''1. Propagation:'''</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''1. Propagation:'''</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a <del style="font-weight: bold; text-decoration: none;"><font color=#FF8C00></del>SQlite<del style="font-weight: bold; text-decoration: none;"></font> </del>data base with an output step defined by the user.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a <ins style="font-weight: bold; text-decoration: none;">[https://www.sqlite.org </ins>SQlite<ins style="font-weight: bold; text-decoration: none;">] </ins>data base with an output step defined by the user.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''2. TLE building:'''</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''2. TLE building:'''</div></td></tr>
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</table>Adminhttps://gentleman.cnes.fr/index.php?title=Methods&diff=29&oldid=prevAdmin le 7 septembre 2021 à 07:402021-09-07T07:40:57Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="fr">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Version précédente</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version du 7 septembre 2021 à 07:40</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Ligne 1 :</td>
<td colspan="2" class="diff-lineno">Ligne 1 :</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><font color=#556B2F>'''GENTLEMAN'''</font> is working in two steps.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><font color=#556B2F>'''GENTLEMAN'''</font> is working in two steps.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">:</del>'''1. Propagation:'''</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''1. Propagation:'''</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a <font color=#FF8C00>SQlite</font> data base with an output step defined by the user.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a <font color=#FF8C00>SQlite</font> data base with an output step defined by the user.</div></td></tr>
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</table>Adminhttps://gentleman.cnes.fr/index.php?title=Methods&diff=28&oldid=prevAdmin le 7 septembre 2021 à 07:402021-09-07T07:40:47Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="fr">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Version précédente</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version du 7 septembre 2021 à 07:40</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Ligne 1 :</td>
<td colspan="2" class="diff-lineno">Ligne 1 :</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><font color=#556B2F>'''GENTLEMAN'''</font> is working in two steps.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><font color=#556B2F>'''GENTLEMAN'''</font> is working in two steps.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"># </del>Propagation</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:'''1. </ins>Propagation<ins style="font-weight: bold; text-decoration: none;">:'''</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a <font color=#FF8C00>SQlite</font> data base with an output step defined by the user.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:First it will propagate a trajectory thanks to [http://psimu.cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a <font color=#FF8C00>SQlite</font> data base with an output step defined by the user.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"># </del>TLE building</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">'''2. </ins>TLE building<ins style="font-weight: bold; text-decoration: none;">:'''</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:Once this trajectory has been computed, <font color=#556B2F>'''GENTLEMAN'''</font> will generate one or several <font color=#FF8C00 title="Two Lines Elements">TLEs</font>. The basic methods to build these <font color=#FF8C00 title="Two Lines Elements">TLEs</font> are the ones proposed by [http://patrius.cnes.fr PATRIUS] ('''Differential''' or '''Levenberg Marquardt''' methods). But, <font color=#556B2F>'''GENTLEMAN'''</font> adds a complementary functionality as it allows finding the best compromise on the amount of points to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> thanks to the propagated trajectory.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>:Once this trajectory has been computed, <font color=#556B2F>'''GENTLEMAN'''</font> will generate one or several <font color=#FF8C00 title="Two Lines Elements">TLEs</font>. The basic methods to build these <font color=#FF8C00 title="Two Lines Elements">TLEs</font> are the ones proposed by [http://patrius.cnes.fr PATRIUS] ('''Differential''' or '''Levenberg Marquardt''' methods). But, <font color=#556B2F>'''GENTLEMAN'''</font> adds a complementary functionality as it allows finding the best compromise on the amount of points to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> thanks to the propagated trajectory.</div></td></tr>
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</table>Adminhttps://gentleman.cnes.fr/index.php?title=Methods&diff=27&oldid=prevAdmin le 7 septembre 2021 à 07:372021-09-07T07:37:56Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
<col class="diff-content" />
<tr class="diff-title" lang="fr">
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Version précédente</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version du 7 septembre 2021 à 07:37</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Ligne 1 :</td>
<td colspan="2" class="diff-lineno">Ligne 1 :</td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">TBW </del>...</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><font color=#556B2F>'''GENTLEMAN'''</font> is working in two steps</ins>.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"># Propagation</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:First it will propagate a trajectory thanks to [http://psimu</ins>.<ins style="font-weight: bold; text-decoration: none;">cnes.fr '''PSIMU'''] tool; all the possibilities linked to its use are available so, any kind of trajectories around the Earth are allowed (<font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>, <font color=#FF8C00 title="Low Earth Orbit">LEO</font>, even reentry !). This trajectory will be stored in a <font color=#FF8C00>SQlite</font> data base with an output step defined by the user.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"># TLE building</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:Once this trajectory has been computed, <font color=#556B2F>'''GENTLEMAN'''</font> will generate one or several <font color=#FF8C00 title="Two Lines Elements">TLEs</font>. The basic methods to build these <font color=#FF8C00 title="Two Lines Elements">TLEs</font> are the ones proposed by [http://patrius.cnes.fr PATRIUS] ('''Differential''' or '''Levenberg Marquardt''' methods). But, <font color=#556B2F>'''GENTLEMAN'''</font> adds a complementary functionality as it allows finding the best compromise on the amount of points to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> thanks to the propagated trajectory.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Let us give an example with a trajectory ephemeris (included in the SQlite file) composed of 50 output points.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* A first possibility is to fit a <font color=#FF8C00 title="Two Lines Element">TLE</font> by giving explicitly the amount of points to take into account: for example, the ten first ones.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* A second possibility is to leave <font color=#556B2F>'''GENTLEMAN'''</font> to find this amount of points for such a fitting. To do it, <font color=#556B2F>'''GENTLEMAN'''</font> will compute different <font color=#FF8C00 title="Two Lines Elements">TLEs</font> using 1, then 2, then 3, then up to 50 points (or less if the user entered a maximum number). Considering each of these <font color=#FF8C00 title="Two Lines Elements">TLEs</font>, <font color=#556B2F>'''GENTLEMAN'''</font> will compute for each point of the trajectory (or less if the user entered another maximum number), the difference between the trajectory and the one propagated with the <font color=#FF8C00 title="Two Lines Element">TLE</font> as initial condition and the model linked to it ('''SGP4''' for <font color=#FF8C00 title="Low Earth Orbit">LEO</font> and '''DeepSDP4''' for <font color=#FF8C00 title="Geostationnary Earth Orbit">LEO</font>). <font color=#556B2F>'''GENTLEMAN'''</font> will then select the <font color=#FF8C00 title="Two Lines Element">TLE</font> which will get the lowest value for the mean error in semi major axis.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* In case of maneuvers to take into account or if the user decided to compute several <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (for example one <font color=#FF8C00 title="Two Lines Element">TLE</font> by day), this process will be executed only in the interval between two <font color=#FF8C00 title="Two Lines Elements">TLEs</font> (or one <font color=#FF8C00 title="Two Lines Element">TLE</font> and the next maneuver)</ins>.</div></td></tr>
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