基于特征值分析的雷达脉冲波形估计及性能分析

雷达侦察接收机往往侦收到多个受噪声污染的目标雷达脉冲,如何从噪声中提取雷达脉冲波形,是现代雷达侦察信号处理中的一个重要内容。提出了一种基于特征值分析的雷达脉冲波形估计算法,该算法通过对脉冲协方差矩阵的特征值分析,给出了一种利用特征向量估计脉冲波形的方法,并理论分析了其估计性能。算法适应于任意形式脉冲波形,且不受各脉冲初始相位的影响。理论分析和仿真结果说明算法能够在较低信噪比环境下恢复脉冲信号波形。

Waveform Estimation of Radar Pulses Based on Eigenanalysis and Performance Analysis

The problem of waveform estimation of radar pulses which badly contaminated by noise is addressed in this paper. A new waveform estimation method is proposed based on eigennalysis and its performance is also analyzed. By eigenvalue-decomposition of the covariance matrix,the algorithm gives a waveform estimation method by eigenvector. The algorithm adapts to waveform of pulses with any shapes,and it is not limited by initial phases of the pulses. This method also can estimate the waveform even the received signal is below the noise level. The theoretical analysis and simulation results indicate the efficiency of our algorithm.