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当雷达跟踪低空、超低空飞行目标时,在接收到目标的直射信号的同时,往往会受到多径反射的干扰。在目标的仰角小于雷达天线波束半功率点宽度时,跟踪误差会变大,最后还会导致雷达丢失目标。
When the radar follows the target of low-altitude and low-altitude flight, it will often receive the interference of multipath reflections while receiving the direct signal of the target. When the elevation of the target is less than the half-power point width of the radar antenna beam, the tracking error will become larger and finally the radar will lose its target.