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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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Simulations <strong>and</strong> Results<strong>Inter</strong> <strong>Satellite</strong> <strong>Links</strong>0.3URE [m]0.20.10.02450997.2 2450997.4 2450997.6 2450997.8 2450998.0Julian Date [Days]Figure 6-43 Ageing of MEO <strong>Ephemeris</strong> with 6 hours smoothingNow let us increase the smoothing interval. The following two figures show the propagationerror <strong>and</strong> the degradation or ageing of the broadcast ephemeris, if the raw estimate of the orbitis smoothed over 12 hours, corresponding to nearly one complete orbit.Page 142R. Wolf

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