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Table 5 Mean RMS of orbit errors in radial, along-track, and cross-track directions, and 3D position for a global network

From: Precise orbit determination for a large LEO constellation with inter-satellite links and the measurements from different ground networks: a simulation study

Number of stations

Case

Mean RMS of orbit errors in radial direction (cm)

Mean RMS of orbit errors in along-track direction (cm)

Mean RMS of orbit errors in cross-track direction (cm)

Mean RMS of orbit errors in 3D position (cm)

1

Without ISL

6.48

28.99

25.19

40.79

With ISL

0.11

0.56

0.22

0.62

6

Without ISL

0.16

0.62

0.15

0.66

With ISL

0.11

0.52

0.08

0.54

16

Without ISL

0.12

0.52

0.07

0.55

With ISL

0.11

0.51

0.01

0.53

32

Without ISL

0.12

0.52

0.05

0.54

With ISL

0.11

0.51

0.05

0.53

60

Without ISL

0.12

0.51

0.04

0.53

With ISL

0.11

0.51

0.04

0.53

Median value

Without ISL

0.12

0.52

0.07

0.55

With ISL

0.11

0.51

0.05

0.53

Best possible

 

0.11

0.51

0.01

0.52