利用远场信标源测试OTHR方位波束宽度的方法  

Measurement of the Azimuth Beam Width of OTHR with Far-field Beacon

作　　者：韩彦明[1] 陈国祥[1] 卢琨[2] 

机构地区：[1]空军驻沪宁地区军事代表室,南京210013 [2]南京电子技术研究所,南京210013

出　　处：《现代雷达》2008年第11期10-12,17,共4页Modern Radar

摘　　要：由于传输信道电离层存在频率选择性、非平稳性和多径效应,对天波超视距雷达的方位波束宽度性能进行测试存在着相当的困难。该文提出了一种利用远场信标源来测试雷达接收波束方向图的方法,进而从方向图中提取接收波束宽度信息,以此来评估雷达的方位分辨率。该方法相对于近场测试以及利用合作目标测试等原有方法,简便易行,在不同电离层条件下重复进行,测试成功率高等优点。试验结果表明该方法简单有效,能够获得较为准确的测试效果。Due to the frequency selectivity,non-stationary and multipath effect of the ionosphere,it is difficult to measure the beam width of OTHR antenna in azimuth of this kind of radar.In this paper,a new method based on the far-field beacon has been proposed to measure the pattern of receiving beam.And the beam width is extracted from the receive pattern to assess the azimuth resolution.Unlike the near-field evaluation or aircraft-dependent methods,this method is simple and easy to be realized for different ionos...

关 键 词：天波超视距雷达 方向图 波束宽度 

分 类 号：TN958.93[电子电信—信号与信息处理]