Satellite Orbit and Ephemeris Determination using Inter Satellite Links

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Simulations and ResultsInter Satellite Links0.080.06URE [m]0.040.020.002450997.2 2450997.4 2450997.6 2450997.8 2450998.0Julian Date [Days]Figure 6-45 URE with 12 hours smoothingOrbit errors, as well as URE remain below 10 cm up to 24 hours.In the last example the raw estimate is used again for propagation, but this time it has beenderived using inter satellite links. From chapter 6.2.7 it can be seen that the standarddeviations, as well as the real orbit errors are much lower compared to ground based onlyorbit determination.• around 2.5 cm radial error (1 σ)• 9 cm along track error (1 σ)• 11 cm cross track error (1 σ)The following figure show the orbit propagation error, as well as the URE of the broadcastephemeris for this tracking scenario.Page 144R. Wolf
Inter Satellite LinksSimulations and ResultsRadial Error [cm] 1998 07 03 12:00 - 1998 07 04 14:2310.05.00-5.0-10.0[h]4 8 12 16 20 24Along Track Error [cm] 1998 07 03 12:00 - 1998 07 04 14:2350.025.00-25.0-50.0[h]4 8 12 16 20 24Cross T rack Error [cm] 1998 07 03 12:00 - 1998 07 04 14:201.50.80-0.8-1.5[h]4 8 12 16 20 24Figure 6-46 MEO Propagation Error without smoothing derived from Raw Estimate usingISL'sR. Wolf Page 145
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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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Simulations and ResultsInter Satell
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Satellite Orbit and Ephemeris Determination using Inter Satellite Links

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