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
Simulations and ResultsInter Satellite LinksFigure 6-6 Visibility of IGSO Constellation "on three Loops"6.1.1.4 GEO / IGSOThe next constellation is a mixed one. It consists of• 9 / 3 / 1 Walker Constellation of IGSO's with Longitude of ascending nodes at 10° E /130° E / 110°W• 9 GEO's, longitude of ascending nodes evenly separated by 40° beginning at 30° E.The following two picture show the ground tracks and the minimum visibility over a period of24 hours.Page 98R. Wolf
Inter Satellite LinksSimulations and ResultsFigure 6-7 Ground Tracks of GEO - IGSO ConstellationFigure 6-8 Visibility of GEO – IGSO ConstellationThe GEO's are not visible ate very high latitude, therefore the coverage at the poles isinsufficient for navigation purposes. Besides that fact of latitude restriction, the coverage overthe equator and mid latitudes is reasonable.R. Wolf Page 99
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Simulations <strong>and</strong> Results<strong>Inter</strong> <strong>Satellite</strong> <strong>Links</strong>Figure 6-6 Visibility of IGSO Constellation "on three Loops"6.1.1.4 GEO / IGSOThe next constellation is a mixed one. It consists of• 9 / 3 / 1 Walker Constellation of IGSO's with Longitude of ascending nodes at 10° E /130° E / 110°W• 9 GEO's, longitude of ascending nodes evenly separated by 40° beginning at 30° E.The following two picture show the ground tracks <strong>and</strong> the minimum visibility over a period of24 hours.Page 98R. Wolf
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