23 
IO 14 
-11 
ation of data to 
¡to (3), only the 
ie homogeneous 
reasoning. This 
Limation proce- 
.11 operator) the 
a (5) is equal to 
i algorithm, the 
iputed. 
ated in Fig. 1 
i represents the 
while the other 
:ous solution of 
cedure, a white 
! cm was added 
ans £, we now 
aated values of 
rth surface. In 
a sample area 
lata were si mu- 
bed procedure) 
sponding to 15 
m f and obser- 
ation approach 
the empirical 
: grouping the 
averaged data 
arc. However, 
lals needed to 
r performed at 
e values of the 
rvation points 
he single com- 
d. These val- 
>n to a Earth 
o attitude er- 
the block: we 
ities were also 
vity model: 
time (») 
» out of plane 
■••SI—radial 
along track 
Figure 1: An example of simulated orbit anomalies ¿ilong a generic arc. 
2.50E+02 
2.00E+02 
1.50E+02 
^ 1.00E+02 
E 
M 
2 
1 5.00E+01 
0 
to 
1 
° O.OOE+OO 
-5.00E+01 
-1 00E+02 
-1.50E+02 
time (s) 
-out of plane 
- radial 
along track 
Figure 2: Simulated observations, after detrending and adding a white noise with mean square value equal to 
2 cm.