雷达这样做是为了去除地面杂波，有关山丘或建筑物的信息，它不需要这些。
Radar does this to remove ground clutter, information about hills or buildings that it doesn't need.
提出来的方法都不足以排除地面杂波。
None of the proposed methods will be effective enough to remove ground clutters.
它能在任何气候条件下发现目标，并能从雷达地面杂波中探测出低空飞行的飞机。
It can locate targets in all weather conditions and detect low flying aircraft in radar ground clutter.
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