“三元组近场”新型幅度控制精确算法  

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

作　　者：王泗宏[1] 黄惠明[2] 喻戈阳[2] 李军[2] 肖顺平[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,长沙410073 [2]北京跟踪与通信技术研究所,北京100094

出　　处：《现代雷达》2005年第12期64-67,共4页Modern Radar

摘　　要：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。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.

关 键 词：射频仿真 近场修正 三元组 

分 类 号：TN957[电子电信—信号与信息处理]