Precision of orbit prediction with SatOrbitPropagator

[eborovenskiy]

Hello everyone!

Could you help me please. I use the GPStk for the prediction of satellite orbit. I use class SatOrbitPropagator. I have exact ephemeris for the Radarsat-1 satellite. I try to propagate ephemeris and i have big difference with exact coordinates. I see that coordinate mistakes increase very fast. For example:
on 8 minutes i have difference 900 meters by X coordinate
on 16 minutes i have difference 2100 meters by X coordinate
...
on 112 minute i have difference 22200 meters by X coordinate.

I use standard integrator RKF78. I try to use different variation of orbit models(atmosphere, gravity, Solar radiation pressure, etc), but i have a same resulats(difference with using different models constitute some meters).

What precision of SatOrbitPropagator? Can i use SatOrbitPropagator for 112 minutes?

[kfkuang]

In fact, the satellite orbit prediction part in GPSTk is not complete, there are some bugs to be fixed.