关键词: 宽带高分辨雷达, 高分辨一维距离像, 维特比算法, 非相干积累

Abstract:

A new algorithm for detecting the maneuvering target with an unknown velocity based on high resolution range profiles (HRRP) of the wideband high resolution radar is proposed. In order to improve the estimation precision in the low signal-to-noise ratio (SNR), the proposed algorithm estimates the velocity of the target and the location of the strongest scattering cells relevant to the target's scattering geometry by the improved two-way viterb algorithm, and then together with the non-coherent integration of the primary range cells chosen around the location of the strongest scattering cells, it improves the detection performance. Experimental results through measured data of two planes illustrate that the proposed algorithm leads to a visible performance improvement compared with conventional non-coherent integration in the presence of range walking.

Key words: wideband high resolution radar, high resolution range profiles, viterb algorithm, non-coherent integration