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Table 1 Daily variations of the three orbit elements of \({\updelta }{\varvec{A}}_{i}\) for GEO/IGSO/MEO satellites at different observation intervals, where dAx, dAy, dAz represent the orbit elements

From: Models and performance of SBAS and PPP of BDS

 

1 s

10 s

60 s

GEO

dAx

dAy

dAz

[− 1.2, 1.5] × 10−7

[− 1.8, 1.8] × 10−7

[− 2.1, 2.1] × 10−6

[− 1.2, 1.4] × 10−6

[− 1.4, 1.7] × 10−6

[− 2.1, 2.1] × 10−5

[− 7.0, 8.4] × 10−6

[− 8.2, 11] × 10−6

[− 1.3, 1.3] × 10−4

IGSO

dAx

dAy

dAz

[− 3.3, 3.4] × 10−5

[− 3.4, 3.6] × 10−5

[− 0.2, 3.7] × 10−5

[− 3.3, 3.4] × 10−4

[− 3.4, 3.6] × 10−4

[− 6.7, 6.5] × 10−4

[− 2.0, 2.0] × 10−3

[− 2.0, 2.2] × 10−3

[− 4.0, 4.0] × 10−3

MEO

dAx

dAy

dAz

[− 7.6, 3.3] × 10−5

[− 1.1, 0.7] × 10−4

[− 1.2, 1.4] × 10−4

[− 7.5, 3.3] × 10−4

[− 1.1, 0.7] × 10−3

[− 1.2, 1.4] × 10−3

[− 4.5, 2.0] × 10−3

[− 6.6, 4.2] × 10−3

[− 7.3, 8.3] × 10−3