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针对被动毫米波技术探测高速运动目标能力不足的问题,采用MMIC直接检波式毫米波辐射计,构建了被动毫米波探测系统,通过试验获得了不同条件下的实测数据。在对测试信号的特征进行分析的基础上,指出第一脉冲的峰值和两峰值脉冲的间距是能够反映目标运动特性的有效特征,提出了计算目标运动速度的方法。计算结果表明,该方法具有一定的精度,在被动毫米波系统中确定运动目标参数是可行的。
Aimed at the problem of passive millimeter-wave technology to detect high-speed moving target, MMIC direct detection millimeter-wave radiometer was used to build a passive millimeter-wave detection system. The measured data under different conditions were obtained through experiments. Based on the analysis of the characteristics of the test signal, it is pointed out that the peak value of the first pulse and the pitch of the two peaks are effective features that can reflect the target motion characteristics. A method of calculating the target velocity is proposed. The calculation results show that this method has a certain accuracy. It is feasible to determine the moving target parameters in passive millimeter wave system.