提出了一种基于混沌映射的新型低截获脉压雷达信号波形 ,该波形采用了脉间由混沌信号控制码型跳变 ,脉内由m序列调相 ,相邻脉冲采用m序列优选对的低截获波形设计技术。分析了这种雷达信号波形的统计特性及其平均模糊函数并给出了其雷达系统实现。理论分析和仿真结果均表明 ,把m序列良好的相关特性与混沌系统的内在随机性相结合 ,借助混沌信号的初值敏感性 ,可以获得数目巨大的具有优异相关性能的序列集 ,获得的雷达信号波形不仅具备良好的距离速度分辨力 ,还具备很低的截获概率和优异的ECCM性能 ,工程上也易于产生和处理 ,

Using the noise-like property of chaos, a new kind of LPI pulse compression rad ar waveform based on chaotic mapping system is proposed. The statistical charact eristics and the Average Ambiguity Function (AAF) of the waveform are analyzed a nd finally the realization of radar system with this kind of waveform is given. The results of analysis and simulation both show that the combination of m serie s with chaotic system can product large number of series sets with good correlat ion characteristics. Thus the obtained radar waveforms not only own good resolut ion in distance and speed but also show excellent LPI and ECCM performance. With good performance and easy realization, this kind of radar waveform can have a p romising future.

TN958.3 TN957.51