基于被动毫米波的运动目标探测技术

针对被动毫米波技术对高速运动目标探测能力不足的问题，采用基于单片微波集成电路(Monolithic Microwave Integrated Circuit, MMIC)的直接检波式毫米波辐射计构建了一种被动毫米波探测系统，并通过试验获得了不同条件下对高速运动目标的实测数据。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个峰值脉冲的间距能够反映目标运动特性的有效特征，并提出了一种用于计算目标运动速度的方法。结果表明，该方法具有一定的精度，可在被动毫米波系统中用于确定运动目标的参数。

Moving Object Detection Technology Based on Passive Millimeter Wave

To solve the problem that the passive millimeter wave technology has not enough capability to detect high-speed moving targets, a passive millimeter wave detection system is built by using a direct detection millimeter wave radiometer based on a Monolithic Microwave Integrated Circuit (MMIC). The data of a high-speed moving target are measured under different conditions in experiment. On the basis of the analysis of the characteristics of the test signals, it is pointed out that the peak of the first pulse and the spacing between two pulse peaks can reflect the effective motion characteristics of the target. A method for calculating the motion speed of the target is proposed. The results show that the method has a certain precision and can be used in the passive millimeter wave detection system to determine the parameters of the moving target.