“三元组近场”新型幅度控制精确算法

在电磁辐射和散射测量时，为使目标处于平面波照射区，被测目标和天线的距离应满足远场条件。但是在一些电子战设备进行暗室内性能测试时，根据这些设备的工作波长和天线口径，则需要建造很大的微波暗室，事实是在很多情况下是不现实的。为此，详细推导了一种“三元组近场”条件下的幅度控制精确算法，该算法能将辐射式仿真远场测试距离降低约1倍，实现近场效应修正，可以广泛应用于工程实践。

A Novel Accurate Arithmetic Amplitude-controlling under the Near-field Condition

In electromagnetic radiation and scattering applications,the distance between the TUT(target under test) and the antenna should meet the far-field requirements,which means the target must be located in the section with plane wave radiation.But when the evaluation of the EW(electronic war) equipment in anechoic chamber is discussed,a very large chamber must be built according to the working wave-length and the antenna size of the TUT. That is always an impossible task.Therefore,a novel accurate arithmetic on amplitude-controlling under near-field condition is formulated step by step.The arithmetic can achieve the near-field error compensation,reduce the test distance to half in RF radiation simulation,and can be used in engineering applications widely.