基于非均匀采样谱分析的多普勒解模糊处理

Doppler ambiguity resolution with spectral analysis of nonuniformly sampled data

针对低脉冲重复频率(pulse repetition frequency,PRF)脉冲多普勒雷达的多普勒解模糊问题,提出了一种基于非均匀采样谱分析的多普勒解模糊处理方法。通过利用多重PRF方式下相参处理间隔内采样数据的时域非均匀特性,算法采用一种改进的复值迭代自适应方法直接估计无模糊多普勒谱的幅度响应,可实现PRF分组参差方式下对多个目标的解多普勒模糊处理。仿真结果验证了算法的有效性。

For Doppler ambiguity resolution of pulse Doppler（PD） radar with low pulse repetition frequency（PRF）,a Doppler ambiguity resolution method with spectral analysis of nonuniformly sampled data is presented.By using the time domain characteristic of nonuniformly spaced data collected during the coherent processing interval（CPI） of multiple PRF systems,a new improved complex value iterative adaptive approach（CIAA） is adopted to directly estimate the response of Doppler spectrum without ambiguity.The algorithm is validated through simulation results of resolving Doppler ambiguity in multiple target situations for the grouping staggered multiple PRF radar system.