| dc.description.abstract |
The increase of orbital debris in the low Earth orbit is a concern for the space industry . Spacecraft and satellites are at risk of collision with orbital debris . Collisions can damage sensitive components or result in catastrophic failure . Organizations such as the United States Space Command are responsible for tracking orbital debris using ground based sensor sites located around the world . Orbit determination techniques are used to estimate the position and velocity of the orbit using range , azimuth , and elevation measurements obtained from the sensors .
Nine sensors from the Space Surveillance Network are simulated to track a debris object in an International Space Station orbit . Perturbations due to a 4 X 4 complex gravity model and an exponential atmospheric model are included in the two -body orbital equations of motion force model . The nonlinear batch least squares and the continuous -discrete extended Kalman filter techniques are used to estimate the debris orbit . |
en_US |