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根据Lorentz互易定理,提出了一种对收发分离偏馈单反射面紧缩场静区评估的方法.两个馈源与反射面分别构成独立的、互为测量关系的天线系统,在相同静区位置构成各自的天线口面.对这两个等效天线系统在该平面产生的电磁场进行测试,得到收发系统在静区位置各自的电磁特性.根据收发天线各自的电磁场分布,按照天线接收原理可以得到双站合成的等效静区.双站等效静区呈对称分布,但相对于单站静区分布,双站等效静区范围变小,波动更小,边缘下降更平缓.采用物理光学法对上述等效静区进行了仿真,并进一步通过实验测试对此静区评估方法的有效性进行了验证.
According to the reciprocity theorem of Lorentz, a method to evaluate the quiet zone of the crushing field of the single-reflector SLR is presented. The two feed sources and the reflector form an independent antenna system with mutual measurement relationship. In the same quiet zone Position the respective antenna port surface of the two equivalent antenna system electromagnetic field generated in the plane were tested to receive the transceiver system in the quiet zone of the respective electromagnetic properties according to the transceiver antenna electromagnetic field distribution in accordance with the principle of antenna can receive The equivalent static zone of dual station synthesis is obtained.The equivalent static zones of two stations are symmetrical, but the equivalent static zone of dual stations is smaller, less fluctuating and the edge descent is more gentle than the single station quiet zone.Using physical The equivalent static zone was simulated by optical method, and the validity of this method was validated by experimental test.