一种连续多脉冲相参海杂波的仿真方法

The Simulation of Successive Multiple-pulse Coherent Sea Clutter

目前,海杂波的电磁特性研究主要分别在幅度统计特性和功率谱特性两方面进行,这已不能满足海杂波背景下开展相参积累研究时对仿真数据的需求,完全随机产生的海尖峰也与实际场景不符。本文针对海杂波仿真面临的问题,开展了连续多脉冲相参海杂波的仿真方法研究,给出了一种包含海尖峰重排、脉间相关处理和谱型滤波等过程的仿真方法。并对仿真模型获得数据与实测数据比较分析。实验结果表明,本文给出的方法可以很好地描述海杂波的幅度分布、多普勒以及相关特性,可以作为进一步开展海面回波相参积累研究的仿真数据来源。

The research about sea clutter magnetic properties is carried out mainly on amplitude characteristics and power spectrum characteristics currently,which cannot meet the demand for phase-coherent accumulation under sea clutter background,and completely randomly distributed sea-spike are not accord with real situation. A simulation method of successive multi-phase coherent sera clutter,including seaspike rearrangement,correlation process of pulses and Doppler spectra filtering,is represented in this paper. These characteristics of the sea clutter recorded by an X-band radar are also compared respectively.Experimental results show that sea clutter amplitude distribution,Doppler spectra and coherent characteristics can be effectively described by the proposed method.