c
o
:;:; 30
. iii
o
0.
.:: 20
~250
(I)
....
~
E
c
o
..:;
(I)
8,.125
:::
~50
(I)
... v
....,
v
E 40
J::
0
::; 30
VJ
0
0.
C 20
u
~ 10
...
III
~
~
a 0
0
Altitude : 800 km
Satellite: NOAA
Pertu rbations : secular
OI3-ElG-EI JGM-3 vs . GEM-T3
6' ......... JGM-3 vs . GRIM4-S4P
- - - JGM - 3 vs. TEG - 2B
~ JGM-3 vs . JGM-2
20
40
60
80
100
120
140
160
Inclination I (deg)
Altitude : 800 km
Satellite: NOAA
Perturbations: long p eri odic
20
40
60
80
OIH)(HI JGM - 3 vs. GEM -T3
66 ........ JGM -3 vs . GRIM4-S4P
- - JGM -3 vs. TEG - 2B
~ JGM - 3 vs. JG M- 2
100
120
140
160
Inclination I (deg)
Altitude : 800 km
OI3-ElG-EI JGM-3 vs . GEM - T3
Satellite: NOAA
"" ........ JGM-3 vs . GRIM4-S4P
Perturbations: total
- - JGM- 3 vs . TEG-2B
~JGM - 3 vs . JGM-2
f'rl
1\
,
I
20
40
60
80
100
120
140
160
Inclination I (deR)
180
18 0
180
Fig. 2. Differences in satellite positions calculated using too different models for the orbit at the altitude:
800 kilometers (NOAA altitude).
204