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利用140 GHz雷达实现目标缩比模型的RCS测量与成像
引用本文:成彬彬,江舸,杨陈,蔡英武,邓贤进,张健.利用140 GHz雷达实现目标缩比模型的RCS测量与成像[J].红外与激光工程,2014,43(10):3416-3422.
作者姓名:成彬彬  江舸  杨陈  蔡英武  邓贤进  张健
作者单位:1.中国工程物理研究院 电子工程研究所,四川 绵阳 621900;
基金项目:国家重点基础研究发展计划(“973”计划)(2015CB755406);中国工程物理研究院太赫兹研究专项(T2014010205);中国工程物理研究院高新技术创新基金
摘    要:构建了140 GHz频段的单基雷达用于缩比模型的高分辨力成像和雷达散射截面积(RCS)测量。雷达的相干收发机用全固态的方式实现,其发射信道采用一个Ka波段频率源驱动的倍频链作为本振,在5 GHz的带宽内实现了0.5 mW的输出功率,接收机采用基于肖特基二极管的次谐波混频器实现相干接收。该雷达RCS测试系统显示出高信噪比的特点,获得了大于100 dB的动态范围和3 cm的成像分辨力。除了可实现对目标的逆合成孔径成像,该系统还可完成对旋转目标全方位角的RCS测量。利用该系统对某航空母舰1/720th模型进行了成像实验和RCS测量,模拟了全尺寸目标在P波段的结果。所获得的数据根据缩比定律可为P-波段雷达设计提供参考。

关 键 词:太赫兹雷达    成像    雷达散射截面积测量    缩比模型
收稿时间:2014-02-10

Scale-model targets radar cross section measurement and imaging using 140 GHz monostatic radar
Cheng Binbin,Jiang Ge,Yang Chen,Cai Yingwu,Deng Xianjin,Zhang Jian.Scale-model targets radar cross section measurement and imaging using 140 GHz monostatic radar[J].Infrared and Laser Engineering,2014,43(10):3416-3422.
Authors:Cheng Binbin  Jiang Ge  Yang Chen  Cai Yingwu  Deng Xianjin  Zhang Jian
Affiliation:1.Institute of Electronic Engineering,China Academy of Engineering Physics,Mianyang 621900,China;2.Terahertz Research Center,China Academy of Engineering Physics,Mianyang 621900,China
Abstract:A monostatic radar at 140 GHz frequency band has been developed for scale-model targets imaging and radar cross section(RCS) measurements. The coherent transceiver using all solid state technique adopts a multiplier chain driving by Ka band source as the transmitter to get an output power of about 0.5 mW in the 5 GHz bandwidth and a Schottky diode subharmonic mixer as the receiver to realize coherent detection. This compact range radar has demonstrated good signal-to-noise obtaining100 dB dynamic range with 3 cm resolution. In addition to inverse synthetic aperture imaging of targets, the system can also measure full angle RCS of selected targets with rotation. Measurements were made on 1/720th scale models of aircraft carrier, simulating P-band frequencies according to scaling laws. The results give some references for the full scale RCS used in P-band radar.
Keywords:terahertz radar  imaging  radar cross section measurements  scale-model
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