Satellite Orbit and Ephemeris Determination using Inter Satellite Links

Satellite Orbit and Ephemeris Determination using Inter Satellite Links Satellite Orbit and Ephemeris Determination using Inter Satellite Links

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Autonomous Onboard ProcessingInter Satellite Links1998 07 01 12:03:44.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:45.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:46.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:47.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:48.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:49.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:50.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:51.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:52.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:53.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:53.000 SV 26 Non Detected Position Error = 0.068 m1998 07 01 12:03:54.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:54.000 SV 26 Non Detected Position Error = 0.175 m1998 07 01 12:03:55.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:55.000 SV 26 Limit Exceeded [Position]1998 07 01 12:03:55.000 SV 26 Check Result: NO GO1998 07 01 12:03:55.000 SV 27 Removed Unhealthy SV ID 261998 07 01 12:03:55.000 SV 28 Removed Unhealthy SV ID 261998 07 01 12:03:55.000 SV 29 Removed Unhealthy SV ID 261998 07 01 12:03:55.000 SV 30 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 00 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 01 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 02 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 03 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 04 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 05 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 06 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 08 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 09 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 10 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 11 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 12 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 13 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 14 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 15 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 16 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 17 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 18 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 19 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 20 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 21 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 22 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 23 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 24 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 25 Removed Unhealthy SV ID 261998 07 01 12:03:56.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:56.000 SV 26 Limit Exceeded [Position]1998 07 01 12:03:56.000 SV 26 Check Result: NO GO1998 07 01 12:03:57.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:57.000 SV 26 Limit Exceeded [Position]1998 07 01 12:03:57.000 SV 26 Check Result: NO GO1998 07 01 12:03:58.000 SV 26 Ramp Detected [Position]1998 07 01 12:03:58.000 SV 26 Limit Exceeded [Position]1998 07 01 12:03:58.000 SV 26 Check Result: NO GO1998 07 01 12:03:59.000 SV 26 Ramp Detected [Position]Page 180R. Wolf

Inter Satellite LinksAutonomous Onboard Processing1998 07 01 12:03:59.000 SV 26 Limit Exceeded [Position]1998 07 01 12:03:59.000 SV 26 Check Result: NO GO1998 07 01 12:04:00.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:00.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:00.000 SV 26 Check Result: NO GO1998 07 01 12:04:01.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:01.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:01.000 SV 26 Check Result: NO GO1998 07 01 12:04:02.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:02.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:02.000 SV 26 Check Result: NO GO1998 07 01 12:04:03.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:03.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:03.000 SV 26 Check Result: NO GO1998 07 01 12:04:04.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:04.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:04.000 SV 26 Check Result: NO GO1998 07 01 12:04:05.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:05.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:05.000 SV 26 Check Result: NO GO1998 07 01 12:04:05.000 SV 26 Switched OffThe event starts at 12:03:22. Twenty seconds later, the ramp detector is triggered the firsttime. First occurrence of a non-integrity event is at 12:03:53, the NO GO Flag due to positionlimit excess is raised at 12:03:55, yielding 2 seconds time to alarm. Impact on the user isnegligible, as can be seen in the figure below.0,4NorthEastUp0,2Error [m]0,0-0,2-0,4-0,612:02:19.000 12:03:39.000 12:04:59.000Time[hour:min:sec]Figure 7-17 User Position Error during ManoeuvreR. Wolf Page 181

<strong>Inter</strong> <strong>Satellite</strong> <strong>Links</strong>Autonomous Onboard Processing1998 07 01 12:03:59.000 SV 26 Limit Exceeded [Position]1998 07 01 12:03:59.000 SV 26 Check Result: NO GO1998 07 01 12:04:00.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:00.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:00.000 SV 26 Check Result: NO GO1998 07 01 12:04:01.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:01.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:01.000 SV 26 Check Result: NO GO1998 07 01 12:04:02.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:02.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:02.000 SV 26 Check Result: NO GO1998 07 01 12:04:03.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:03.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:03.000 SV 26 Check Result: NO GO1998 07 01 12:04:04.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:04.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:04.000 SV 26 Check Result: NO GO1998 07 01 12:04:05.000 SV 26 Ramp Detected [Position]1998 07 01 12:04:05.000 SV 26 Limit Exceeded [Position]1998 07 01 12:04:05.000 SV 26 Check Result: NO GO1998 07 01 12:04:05.000 SV 26 Switched OffThe event starts at 12:03:22. Twenty seconds later, the ramp detector is triggered the firsttime. First occurrence of a non-integrity event is at 12:03:53, the NO GO Flag due to positionlimit excess is raised at 12:03:55, yielding 2 seconds time to alarm. Impact on the user isnegligible, as can be seen in the figure below.0,4NorthEastUp0,2Error [m]0,0-0,2-0,4-0,612:02:19.000 12:03:39.000 12:04:59.000Time[hour:min:sec]Figure 7-17 User Position Error during ManoeuvreR. Wolf Page 181

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