Satellite Orbit and Ephemeris Determination using Inter Satellite Links

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Autonomous Onboard ProcessingInter Satellite Links7.4.3.3 Clock DriftThe third case simulates a sudden excessive drift of 10 -10 sec/sec in the clock of SV 04, whichis visible to the user at a high elevation. The figures below indicate true and estimation errorof the onboard processor.1,41,21,00,8XYZTError [m]0,60,40,20,0-0,212:01:24.000 12:01:49.000 12:02:14.000Time [hour:min:sec]Figure 7-18 Absolute Clock Error SV 040,05dXdYdZdT0,00-0,05Error [m]-0,10-0,15-0,2012:01:24.000 12:01:49.000 12:02:14.000Time [hour:min:sec]Figure 7-19 Estimated vs True Error SV 04Page 182R. Wolf
Inter Satellite LinksAutonomous Onboard ProcessingThe error log summarises the sequence of events:1998 07 01 12:01:51.000 SV 04 Chi Square Test Failed1998 07 01 12:01:51.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:51.000 SV 05 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 06 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 07 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 08 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 11 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 12 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 13 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 14 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 15 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 16 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 19 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 20 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 21 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 22 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 23 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 24 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 25 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 26 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 27 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 28 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 29 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 30 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 31 Removed Unhealthy SV ID 041998 07 01 12:01:51.000 SV 32 Removed Unhealthy SV ID 041998 07 01 12:01:52.000 SV 00 Removed Unhealthy SV ID 041998 07 01 12:01:52.000 SV 01 Removed Unhealthy SV ID 041998 07 01 12:01:52.000 SV 02 Removed Unhealthy SV ID 041998 07 01 12:01:52.000 SV 03 Removed Unhealthy SV ID 041998 07 01 12:01:52.000 SV 04 Chi Square Test Failed1998 07 01 12:01:52.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:53.000 SV 04 Chi Square Test Failed1998 07 01 12:01:53.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:54.000 SV 04 Chi Square Test Failed1998 07 01 12:01:54.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:55.000 SV 04 Chi Square Test Failed1998 07 01 12:01:55.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:56.000 SV 04 Chi Square Test Failed1998 07 01 12:01:56.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:57.000 SV 04 Chi Square Test Failed1998 07 01 12:01:57.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:58.000 SV 04 Chi Square Test Failed1998 07 01 12:01:58.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:01:59.000 SV 04 Chi Square Test Failed1998 07 01 12:01:59.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:02:00.000 SV 04 Chi Square Test Failed1998 07 01 12:02:00.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:02:01.000 SV 04 Chi Square Test Failed1998 07 01 12:02:01.000 SV 04 Check Result: NO GO [False Alarm]1998 07 01 12:02:01.000 SV 04 Switched OffR. Wolf Page 183
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Satellite Orbit and EphemerisDeterm
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Inter Satellite LinksAbstractGlobal
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Inter Satellite LinksTable of Conte
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Inter Satellite Links6.2.2 IGSO WAL
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Inter Satellite LinksList of Figure
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Inter Satellite LinksFigure 6-38 Tr
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Inter Satellite LinksList of Tables
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Inter Satellite LinksJ2Earths Oblat
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Inter Satellite LinksIntroduction1
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Inter Satellite LinksIntroductionGE
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Inter Satellite LinksISL Observatio
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Inter Satellite LinksState Estimati
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State EstimationInter Satellite Lin
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Orbit ComputationInter Satellite Li
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Software DescriptionInter Satellite
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Simulations and ResultsInter Satell
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Satellite Orbit and Ephemeris Determination using Inter Satellite Links

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