摘要
针对脉冲多普勒导引头存在遮挡导致在遮挡期和半遮挡期导引头接收通道易受镜像目标影响,且雷达误差受到恶化的问题,根据遮挡机理及其影响,提出了一种包括不依赖于精确测距的基于目标回波峰值获取、弹目距离获取和精确测速3步骤的遮挡预判方法,并对遮挡预判效果进行了仿真。结果表明通过遮挡预判后,可提前关闭导引头接收通道,减少遮挡条件下镜像目标能量进入,以及低信噪比时的雷达误差输出。研究可为制导控制系统的抗遮挡研究提供理论依据。
Aim at the problems caused by eclipse,including target image influence on seeker receiver and radar error degradation in eclipse and half eclipse period for pulse Doppler radar seeker,an eclipse prejudgment methodology which was based on eclipse mechanism and did not rely on high precision range information was proposed in this paper.The three steps were included for its implementation that were target peak power point search,missile-target range acquirement and velocity measurement.The benefit of eclipse prejudgment was analyzed by the simulation.The analysis results showed that target image power input in eclipse circumstance and radar error output in low signal to noise ratio condition could be obstructed by shutting down radar seeker receiver previously through eclipse prejudgment.The study was useful for anti-eclipse research in missile guidance control systems.
出处
《上海航天》
2016年第3期30-35,共6页
Aerospace Shanghai
关键词
导引头
脉冲多普勒
遮挡影响
遮挡预判
镜像目标
雷达误差
目标回波峰值
弹目距离
测速
Radar seeker
Pulse Doppler
Eclipse effects
Eclipse prejudgment
Target image
Radar error
Target peak power
Missile-target range
Velocity measarement
