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 Links6.2.7 Galileo 1 (Pure MEO)6.2.7.1 Ground TrackingIn this scenario only ground links are processed for orbit determination. The constellation istracked by the full proposed ground network. The achieved accuracy can be seen in the figureshown below.Radial Error [cm] 1998 07 02 12:36 - 1998 07 12 18:3650.025.0Radial Std. Dev. [cm] 1998 07 02 12:36 - 1998 07 12 18:3634.0017.0-25.0-50.0[h]59 118 177 2360[h]57 114 171 228Along Track Error [cm] 1998 07 02 12:36 - 1998 07 12 18:3692.046.0Along Track Std. Dev. [cm] 1998 07 02 12:36 - 1998 07 12 18:36110.0055.0-46.0-92.0[h]59 118 177 2360[h]57 114 171 228Cross T rack Error [cm] 1998 07 02 12:36 - 1998 07 12 18:3624.012.0Cross T rack Std. Dev. [cm] 1998 07 02 12:36 - 1998 07 12 18:3688.0044.0-12.0-24.0[h]59 118 177 2360[h]57 114 171 228Figure 6-34 Tracking Accuracy of MEO using Galileo NetworkPage 130R. Wolf
Inter Satellite LinksSimulations and Results6.2.7.2 Ground and Intersatellite TrackingBy adding inter satellite links, tracking accuracy can be improved enormously. Radialaccuracy comes down to 2.5 cm, while along track and cross track accuracy are around 10 cm.This is a degree of accuracy which can normally only be reached by post processing. The realtime accuracy is that good, further smoothing before prediction becomes (nearly) obsolete.Radial Error [cm] 1998 07 01 22:47 - 1998 07 06 10:4712.0Radial Std. Dev. [cm] 1998 07 01 22:47 - 1998 07 06 10:476.02.0-6.001.0-12.0[h]25 50 75 1000[h]25 50 75 100Along Track Error [cm] 1998 07 01 22:47 - 1998 07 06 10:4718.0Along Track Std. Dev. [cm] 1998 07 01 22:47 - 1998 07 06 10:479.08.0-9.004.0-18.0[h]25 50 75 1000[h]25 50 75 100Cross Track Error [cm] 1998 07 01 22:47 - 1998 07 06 10:4720.0Cross T rack Std. Dev. [cm] 1998 07 01 22:47 - 1998 07 06 10:4710.010.0-10.005.0-20.0[h]25 50 75 1000[h]25 50 75 100Figure 6-35 Tracking Accuracy of MEO all available ISL'sR. Wolf Page 131
- Page 96 and 97: Software DescriptionInter Satellite
- Page 98 and 99: Software DescriptionInter Satellite
- Page 100 and 101: Software DescriptionInter Satellite
- Page 102 and 103: Software DescriptionInter Satellite
- Page 104 and 105: Software DescriptionInter Satellite
- Page 106 and 107: Software DescriptionInter Satellite
- Page 108 and 109: Simulations and ResultsInter Satell
- Page 110 and 111: Simulations and ResultsInter Satell
- Page 112 and 113: Simulations and ResultsInter Satell
- Page 114 and 115: Simulations and ResultsInter Satell
- Page 116 and 117: Simulations and ResultsInter Satell
- Page 118 and 119: Simulations and ResultsInter Satell
- Page 120 and 121: Simulations and ResultsInter Satell
- Page 122 and 123: Simulations and ResultsInter Satell
- Page 124 and 125: Simulations and ResultsInter Satell
- Page 126 and 127: Simulations and ResultsInter Satell
- Page 128 and 129: Simulations and ResultsInter Satell
- Page 130 and 131: Simulations and ResultsInter Satell
- Page 132 and 133: Simulations and ResultsInter Satell
- Page 134 and 135: Simulations and ResultsInter Satell
- Page 136 and 137: Simulations and ResultsInter Satell
- Page 138 and 139: Simulations and ResultsInter Satell
- Page 140 and 141: Simulations and ResultsInter Satell
- Page 142 and 143: Simulations and ResultsInter Satell
- Page 144 and 145: Simulations and ResultsInter Satell
- Page 148 and 149: Simulations and ResultsInter Satell
- Page 150 and 151: Simulations and ResultsInter Satell
- Page 152 and 153: Simulations and ResultsInter Satell
- Page 154 and 155: Simulations and ResultsInter Satell
- Page 156 and 157: Simulations and ResultsInter Satell
- Page 158 and 159: Simulations and ResultsInter Satell
- Page 160 and 161: Simulations and ResultsInter Satell
- Page 162 and 163: Simulations and ResultsInter Satell
- Page 164 and 165: Simulations and ResultsInter Satell
- Page 166 and 167: Simulations and ResultsInter Satell
- Page 168 and 169: Autonomous Onboard ProcessingInter
- Page 170 and 171: Autonomous Onboard ProcessingInter
- Page 172 and 173: Autonomous Onboard ProcessingInter
- Page 174 and 175: Autonomous Onboard ProcessingInter
- Page 176 and 177: Autonomous Onboard ProcessingInter
- Page 178 and 179: Autonomous Onboard ProcessingInter
- Page 180 and 181: Autonomous Onboard ProcessingInter
- Page 182 and 183: Autonomous Onboard ProcessingInter
- Page 184 and 185: Autonomous Onboard ProcessingInter
- Page 186 and 187: Autonomous Onboard ProcessingInter
- Page 188 and 189: Autonomous Onboard ProcessingInter
- Page 190 and 191: Autonomous Onboard ProcessingInter
- Page 192 and 193: Autonomous Onboard ProcessingInter
- Page 194 and 195: Autonomous Onboard ProcessingInter
Simulations <strong>and</strong> Results<strong>Inter</strong> <strong>Satellite</strong> <strong>Links</strong>6.2.7 Galileo 1 (Pure MEO)6.2.7.1 Ground TrackingIn this scenario only ground links are processed for orbit determination. The constellation istracked by the full proposed ground network. The achieved accuracy can be seen in the figureshown below.Radial Error [cm] 1998 07 02 12:36 - 1998 07 12 18:3650.025.0Radial Std. Dev. [cm] 1998 07 02 12:36 - 1998 07 12 18:3634.0017.0-25.0-50.0[h]59 118 177 2360[h]57 114 171 228Along Track Error [cm] 1998 07 02 12:36 - 1998 07 12 18:3692.046.0Along Track Std. Dev. [cm] 1998 07 02 12:36 - 1998 07 12 18:36110.0055.0-46.0-92.0[h]59 118 177 2360[h]57 114 171 228Cross T rack Error [cm] 1998 07 02 12:36 - 1998 07 12 18:3624.012.0Cross T rack Std. Dev. [cm] 1998 07 02 12:36 - 1998 07 12 18:3688.0044.0-12.0-24.0[h]59 118 177 2360[h]57 114 171 228Figure 6-34 Tracking Accuracy of MEO <strong>using</strong> Galileo NetworkPage 130R. Wolf
Change language