一种组合型的探干一体化信号设计分析

针对雷达信号资源利用率有待提升、低截获性能不足的问题,提出 1种复合调制的创新型探干一体化信号波形。线性调频信号本身具有良好的低截获性能,伪随机码序列分量具有较好的干扰性,同时又能一定程度上扩展信号带宽,两者的复合调制信号具有良好的探测和干扰性能。对基于 LFM的探干一体化信号波形进行了调制原理分析,并分别从时域、频域、功率谱、模糊函数、自相关特性等角度分析其探测、干扰特性。仿真实验证明,相较于单一调制的线性调频信号,一体化信号具有更宽的频带、更优良的干扰特性和探测性能,同时,有更高效的雷达资源利用率。

Design and Analysis of a Combined Type of Integrated Detecting-Jamming Signal

Aiming at the problems of low utilization of radar signal resources and insufficiency of the low probability of inter.ception, an integrated signal waveform based on linear frequency modulation (LFM) is proposed. LFM signal itself has a cer.tain low interception performance, the pseudo-random code sequence component has good interference and can expand thesignal bandwidth to a certain extent, and the composite modulated signal has good detecting and jamming performance, Themodulation principle of the integrated signal waveform based on LFM is analyzed, and its detecting and jamming characteris.tics are analyzed from the perspective of power spectrum, ambiguity function and auto-correlation characteristics. The simu.lation results show that the integrated signal has a wider frequency band, better jamming and detecting performance, andmore efficient utilization of radar resources compared with the single modulated LFM signal.