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
Inter Satellite LinksPage xiiR. Wolf
Inter Satellite LinksIntroduction1 INTRODUCTIONThe conventional way of precise orbit determination is to take pseudorange, Doppler or anglemeasurements of a satellite with respect to a fixed point on the ground, and apply differentialcorrections to a (more or less accurate) predicted reference orbit.A radio signal travelling from one satellite to another can also be used to derive the distancebetween these two space crafts. Although the distance is not measured between a satellite anda known point– like a ground station – but between two satellites, these measurements can beused to derive the satellite’s state vectors, i.e. their position and velocity at a given time.Although these measurements can not be used solely, i.e. with out any ground reference, theyprovide additional information. The following picture shows two satellites, which areconducting inter satellite measurements. At the same time, ranging stations on the ground takemeasurements from both satellites.Figure 1-1Principle of Inter Satellite MeasurementsThe ISL (inter satellite links) provides an observation with a geometry completely differentfrom those of the ground referenced links, as can be seen from the figure. This is an aadvantage especially for satellites at higher orbits. From a satellite in geostationary orbit, theearth is seen under a small angle of approximately 17°, which implies also the limit for theR. Wolf Page 1
- Page 1 and 2: Satellite Orbit and EphemerisDeterm
- Page 3 and 4: Inter Satellite LinksAbstractGlobal
- Page 5 and 6: Inter Satellite LinksTable of Conte
- Page 7 and 8: Inter Satellite Links6.2.2 IGSO WAL
- Page 9 and 10: Inter Satellite LinksList of Figure
- Page 11 and 12: Inter Satellite LinksFigure 6-38 Tr
- Page 13 and 14: Inter Satellite LinksList of Tables
- Page 15: Inter Satellite LinksJ2Earths Oblat
- Page 19 and 20: Inter Satellite LinksIntroductionGE
- Page 21 and 22: Inter Satellite LinksISL Observatio
- Page 23 and 24: Inter Satellite LinksState Estimati
- Page 26 and 27: State EstimationInter Satellite Lin
- Page 28 and 29: State EstimationInter Satellite Lin
- Page 30 and 31: State EstimationInter Satellite Lin
- Page 32 and 33: State EstimationInter Satellite Lin
- Page 34 and 35: State EstimationInter Satellite Lin
- Page 36 and 37: Orbit ComputationInter Satellite Li
- Page 38 and 39: Orbit ComputationInter Satellite Li
- Page 40 and 41: Orbit ComputationInter Satellite Li
- Page 42 and 43: Orbit ComputationInter Satellite Li
- Page 44 and 45: Orbit ComputationInter Satellite Li
- Page 46 and 47: Orbit ComputationInter Satellite Li
- Page 48 and 49: Orbit ComputationInter Satellite Li
- Page 50 and 51: Orbit ComputationInter Satellite Li
- Page 52 and 53: Orbit ComputationInter Satellite Li
- Page 54 and 55: Orbit ComputationInter Satellite Li
- Page 56 and 57: Orbit ComputationInter Satellite Li
- Page 58 and 59: Orbit ComputationInter Satellite Li
- Page 60 and 61: Orbit ComputationInter Satellite Li
- Page 62 and 63: Orbit ComputationInter Satellite Li
- Page 64 and 65: Orbit ComputationInter Satellite Li
<strong>Inter</strong> <strong>Satellite</strong> <strong>Links</strong>Page xiiR. Wolf
Change language