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本文介绍了有关低空雷达制导防御导弹的实际设计问题。低空目标信号返回接收机并混进了很强的地面杂波及来自平静海面的多径信号。多普勒效应和布鲁斯特角效应常用来从地面杂波及多径干扰中区分出真目标反射信号。从完整的导弹制导及控制系统角度,讨论了传感器的设计因数,包括杂波和多径干扰的抑制、多普勒分辨能力以及传感器稳定性。利用定量的脱靶距离的例子讨论了对脱靶距离的主要影响,并指出了导弹横向加速的作用。
This article describes the actual design issues for low altitude radar guided defense missiles. The low-altitude target signal returns to the receiver and mixes into strong ground clutter and multipath signals from the calm sea. Doppler effect and Brewster angle effect are often used to distinguish true target reflected signals from ground clutter and multipath interference. From the point of view of a complete missile guidance and control system, the design factors of the sensors are discussed, including the suppression of clutter and multipath interference, Doppler resolution and sensor stability. The main influence on the off-target distance is discussed with the example of quantitative off-target distance and the effect of lateral acceleration of the missile is pointed out.