A Method of Range Measurement Based on High Resolution Range Profile

In conventional methods, the weighted mean range of the scattering centers on the high resolution range profile(HRRP) is assumed as the range between the target center and radar. However, this assumption is not reasonable because the scattering center with the maximum amplitude may not locate at the center of the target. In this paper, we proposed a novel range measurement method based on HRRPs. In the proposed method, HRRPs at different target poses are first predicted by the three-dimensional electromagnetic model (3-D em-model) of the target. Then, a slide correlation is conducted to measure the similarity between the HRRP of measurements and the HRRPs predicted by the 3-D em-model. Since the target center is already marked in the 3-D em-model, the position of the target center can be obtained through the correlation. Experimental results using simulated data validate the effectiveness of the proposed method.