功率合成全固态脉冲源外场目标探测试验
Outdoor target detection of solid state pulser based on power synthesis
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摘要: 为给冲击雷达提供理想的发射源，利用功率合成技术，将多个数kV，ns级的固态脉冲源合成为MW量级的高功率脉冲源；为研究冲击雷达目标特性，设计了一套由功率合成的全固态脉冲发射机、超宽带平面TEM喇叭发射天线阵、超宽带开槽接收天线阵、正交解调采样接收机、主控计算机组成的冲击体制雷达目标探测系统；采用增大收发天线、目标与地面的距离以及在目标回波中加时间窗的方法，成功探测到2 km处在光学区RCS为0.01 m2的目标；采用16个发射单元的目标回波信号比采用8个发射单元时明显，这表明功率合成在采用较多发射单元时效果更为明显。Abstract: The ultra-wide band(UWB) impulse radar system is developed and studied, which includes a solid state pulser based on power synthesis technology, an UWB planar TEM horn antenna array for transmitting, an UWB slot array for receiving, a quadrature demodulation receiver and a computer. By heightening the distances between the ground and the target, and the transmitting and receiving arrays, and adding the time window, the radar system can detect the target which is 2 km away and the RCS of optics area is 0.01 m2, which shows that the system is feasible. The echo signal is stronger when 16 transmitting cells are adopted than that when 8 transmitting cells are adopted, which shows that the technology of power synthesis is effective.
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Key words:
- power synthesis /
- solid state pluser /
- radar system of target detection /
- rcs
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