Study on Doppler characterization of LEO based on three-dimensional radar

As increasing of small space objects in low earth orbit, more and more three-dimensional radars are adopted for space surveillance. In the form of radial velocity and radial acceleration, Doppler characteristics of LEO space object which are essential for small object detection are studied. Based on orbit inclination and object position, a new algorithm to estimate Doppler characteristics is proposed. Key factors affect estimation precision and performances are analyzed. The rationality of the algorithm is validated by simulation test.