连续波雷达在强杂波下低空目标探测方面较常规脉冲雷达具有显著的优势。由于连续波雷达是同时发射和接收, 提高连续波雷达收发天线隔离是实现低空远程探测的关键。文中采用减小收发天线的互耦法和吸收法,极大地提高了连 续波雷达波导缝隙平面阵列天线系统的隔离度,用试验验证了其设计的有效性,实测结果与仿真数据相吻合,隔离度大于100 dB,对连续波雷达收发天线隔离度的工程设计具有一定的参考作用。

The continuous wave radar has significant advantages over the conventional pulse radar in detecting low altitude targets under strong clutter. Because the continuous wae radar transmits and receives at the same thime, improving the isolation of the transceiver antenna of continuous wave radar is the key to realized low altitude long range detection. In this paper, the mutual coupling reduction and absoption methods are described, these methods are applicable to improve greatly the isolation degree of waveguide slot planar array transceiver antenna system of the continuous wave radar, and experiments are conducted to verify the effectiveness of the design. The measured results are consistent with the simulation data, and the isolation degree is greater than 100 dB. This paper can be used as a reference for the engineering design of isolation degree of ransceiver antenna of the continuous wave radar.

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