文中以检测低空突防目标为背景,分析了在多径散射、海杂波和热噪声以及远距离支援干扰的情况下,高重频脉冲多普勒(PD)雷达导引头对低空突防目标的检测性能。首先,通过对多径条件下的目标回波信号、海杂波、热噪声以及远距离支援干扰进行建模,推导得出了高重频PD 雷达接收信号的表达形式;然后,结合具体场景对雷达接收信号进行仿真,并以此综合分析了多径散射、海杂波、远距离支援干扰对目标回波的影响效应;最后,得到了不同干扰因素对PD 雷达导引头检测性能的影响效果。

The detection performance of high pulse repetition frequency (HPRF) pulse Doppler (PD) radar seeker under the conditions of multipath scattering, sea clutter, thermal noise and long-distance supporting interference in the context of detecting lowaltitude penetration target is analyzed in this paper. Firstly, by the modeling of multipath target echo, sea clutter, thermal noise and long-distance supporting interference, the expression of the received signal of HPRF PD radar is deduced. Secondly, the received signals of the radar are simulated in the consideration of specific scenarios, and the effects of multipath scattering, sea clutter and long-distance supporting interference on target echo are comprehensively analyzed. Finally the effects of different interfering factors on the detection performance of PD radar seeker are obtained.

TN958