Astrodynamics 101 - DerAstrodynamics.com
Astrodynamics 101 - DerAstrodynamics.com
Astrodynamics 101 - DerAstrodynamics.com
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Algorithm<br />
(Reference =<br />
WGS84 12x12,<br />
Sun, Moon,<br />
Drag)<br />
SGP4<br />
(analytic)<br />
Vinti<br />
(analytic)<br />
Kepler+<br />
(analytic)<br />
Numerical<br />
Integration<br />
(4x4, 200s)<br />
Comparison of Robustness, Mean and Standard Deviation<br />
2007<br />
total # of objs = 11140<br />
# of objects<br />
with position mean<br />
difference / std (km)<br />
> 5 km<br />
7043<br />
4129<br />
1117<br />
131<br />
Robustness, mean and standard deviation (std)<br />
for one day prediction<br />
53. / 421.<br />
5.3 / 5.0<br />
2.3 / 1.9<br />
1.5 / 1.4<br />
2009<br />
total # of objs = 14327<br />
# of objects<br />
with position mean<br />
difference / std (km)<br />
> 5 km<br />
9028<br />
5399<br />
1964<br />
216<br />
52. / 257.<br />
5.4 / 5.1<br />
2.6 / 2.1<br />
1.7 / 1.4<br />
2011<br />
total # of objs = 14638<br />
# of objects<br />
with position mean<br />
difference / std (km)<br />
> 5 km<br />
9289<br />
5453<br />
1896<br />
177<br />
46. / 195.<br />
5.5 / 5.3<br />
2.6 / 2.0<br />
1.6 / 1.4
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