摘要
面对复杂的电磁环境,现代战场要求雷达具有强的抗干扰特性,为在有效的距离内提高分辨率和测量精度,混沌信号是一种类随机性信号,具有良好的抗干扰和低截获概率特性。研究了一种混沌脉位和相位复合调制的脉冲压缩信号,其模糊函数是理想的图钉型,具有良好的距离和速度分辨力。提出了新型脉冲多普勒雷达系统处理方案,并基于SPW系统仿真平台,建立了新型脉冲多普勒雷达系统的仿真模型,对系统的抗干扰能力进行了理论分析和仿真,仿真结果表明,采用混沌脉位和相位复合调制脉冲压缩信号的脉冲多普勒雷达系统具有较强的抗干扰性能,混沌信号在雷达系统中有良好的应用前景。
Facing complicated electronic entironment, radar must have better anti -jamming character in modem war field. Chaotic signal, as a pseudorandom signal, has favorable anti - jamming ability and low probability of being intercepted. A chaotic pulse signal with complex modulated position and phase is studied in the article, which Ambiguity function is as excellent as nail, so it has good anti -jamming ability and low probability of being intercepted. And a processing project of new pulse Doppler radar system is proposed, system model simulation is set up based on SPW. The chaotic signal＇s anti -jamming ability is analyzed in theory and emulation. The simulation results indicate that a chaotic pulse signal with position and phase complex modulated applied in pulse doppler radar has better anti - jamming character, and applying chaotic signal in radar system is profitable.
出处
《计算机仿真》
CSCD
北大核心
2010年第6期15-18,共4页
Computer Simulation
基金
空军工程大学博士科研启动基金项目(KDYBSST601)
