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在高频地波雷达中,当雷达与目标具有相对运动时,采用线性调频连续波(FMICW)信号会导致系统的距离速度分辨力下降;而且FMICW信号容易被截获。文中将Bernulli混沌调频信号应用于高频地波雷达,并将其与线性调频中断连续波(FMICW)信号从不同方面进行详细比较。仿真结果表明,Bernulli混沌调频信号提高了高频地波雷达的距离速度分辨率、对目标的探测能力、抗干扰能力以及抗截获性能。
In high-frequency ground wave radar, when the radar and the target have relative motion, the use of the FMICW signal will result in a decrease of the speed resolution of the system; and the FMICW signal is easily intercepted. In this paper, the Bernoulli chaotic FM signal is applied to high frequency ground wave radar, and compared with the FMICW signal in different aspects. The simulation results show that the Bernoulli chaotic FM signals improve the range velocity resolution, target detection capability, anti-jamming capability and anti-jamming performance of HF ground-wave radar.