窄带相参雷达刚性编队目标架次分辨及横向间距定标

Sortie determination and cross-range scaling for rigid targets using narrowband coherent radar

针对窄带相参雷达刚性编队目标架次分辨难题,该文提出了基于高分辨Doppler像架次分辨和横向间距定标的方法。首先,建立了基于长时间积累的刚性编队目标信号模型。其次,基于Doppler锐化度准则估计目标切向速度,并通过聚焦处理获取编队目标的高分辨Doppler像。进而,基于目标高分辨Doppler像谱峰个数获取目标架次信息并实现编队目标间的横向间距定标。同时,还定量分析了刚性编队目标可分辨的最小积累时间。最后,用实测窄带雷达数据验证了本文方法的有效性。

A high Doppler resolution （HDR） image method was developed for sortie determination and cross range scaling of rigid targets. A signal model was developed for narrowband coherent radar with a long coherent integration time. The cross-range velocity is then estimated using Doppler sharpening to obtain HDR using autofoeusing processing. The sorties can then be identified in the image with cross range scaling. The minimum coherent time is derived for rigid targets. Tests with real data demonstrate the method＇s effectiveness.