The range alignment algorithm for high-resolution range profile of multiple target

Aiming at the problem of the difficulty in the range alignment of HRRP because of more than one target in the window of radar image, this paper propose a alignment method for multiple targets in the target group by using an image segmentation method. First, we accumulate the HRRP of the target, and get the HRRP process diagram. By calculating the correlation coefficient between each frame of HRRP and the reference HRRP, the unaligned HRRP sequence is aligned roughly in frequency domain. After rough alignment, the image segmentation method is used to segment the range image of each target. In the end, the envelope alignment for the HRRP of each target is finished using the least entropy method. The algorithm is simple and fast, and can achieve a better alignment effect on multi object tracking. The effectiveness of the proposed method is verified by the analysis of the simulation data.