GMTI and Location Based on Improved ESPRIT in Distributed Satellite SAR

The model of detection, location and measuring velocity of the moving targets is constructed under the condition of distributed satellite SAR. A new multi-channel GMTI algorithm based on improved ESPRIT is proposed. At first, DPCA is employed to detect the moving targets. Then ESPRIT is used to precisely estimate their number and calculate the position and velocity. The theoretical analysis and simulation results show the new algorithm is effective and can not only detect the moving targets but also estimate their motion parameters precisely.