摘要
针对目前常用的伪随机二相编码的缺点,利用Logistic混沌映射产生混沌序列并进行数字量化和截取,生成混沌二相编码信号,重点分析了混沌二相编码信号的相关性、混合信号隔离度、抗干扰性能和多普勒敏感性能。仿真分析表明,混沌二相编码信号不仅具有大的时宽带宽积和良好的自相关性,而且具有较强的抗干扰性能和更宽的多普勒容限,是一种较为理想的雷达脉冲压缩信号。
According to the disadvantages of common pseudo binary-phase code, the generating scheme of chaotic binary-phase coded signal （CBCS） based on Logistic chaotic mapping is presented. Firstly, CBCS is obtained by digital measuring and intercepting chaotic sequence, which generated from Logistic chaotic mapping. Then, the correlation, insulation degree, anti-interference performance and doppler frequency sensitivity are analyzed in detail. The simulation examples show CBCS big not only is product of time-width and bandwidth signal, but also has nicer autocorrelation features. Moreover, the anti- interference performance of CBCS is better and the doppler frequency tolerance is greater, which demonstrate CBCS is an ideal radar pulse co^npression signal.
出处
《火力与指挥控制》
CSCD
北大核心
2012年第8期62-65,共4页
Fire Control & Command Control
基金
国防预研课题资助项目
