Ground Moving Targets Velocity Estimation based on Shadow and Target Detection

THz radar has the advantages of short synthetic aperture time and fast imaging velocity, and performs realtime imaging of ground moving targets. Therefore, it is possible to use the shadow and target information in SAR images to estimate the velocity of ground moving targets. In this paper, shadow detection and target detection are introduced to estimate the moving targets velocity respectively, and the results are compared between the two methods. In the experiments, the measured data of THz radar is applied to estimate the velocity of moving targets. The results show that the estimation method based on shadow detection is robust, and the method based on target detection has high estimation accuracy.