10
• JGM1
JGM2
8
JGM3A
E
JGM3
.2....
JGM3B
0
6
JGM3D
.... ....
W
-
:0 ....
0
4
(ij
'5
CO
II:
2
o
40
60
80
100
120
140
Inclination (deg)
Fig. 3. RMS Radial Orbit Error at TOPEXIPOSEIDON Altitude Predicted by
Solution Covariance
Q)
o
c:
co
.;:
co
>
~
10. 19
c:
~
Q)
:;::
is
Q)
~
10. 21
0>
Q)
Cl
o
10
-<>------ JGM3A . JGM3D
---<>-- JGM38 . JGM3D
20
30
40
50
60
70
Degree
Fig. 4. Comparison of Degree Difference Variances (JGM-3A-JGM-3D vs.
JGM-3B-JGM-3D)
49