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天线正交加权改变天线方向图方法及其应用
史伟,刘翠海
0
(海军潜艇学院,山东 青岛 266044)
摘要:
指出了目前改变天线方向特性存在的问题和困难;在研究环形天线方向特性的基础 上,提出了一种能够快速旋转天线方向图的新方法,即天线正交加权法。该方法可在天线不 便 旋转或不能旋转的情况下,通过对天线接收的信号进行加权处理控制天线方向图的旋转,达 到天线方向图快速改变的目的。最后对该方法的推广应用进行了探讨。该方法具有可靠性高 、精确度高、便于自动控制、不依赖于机载平台运动方向等优点。利用该方法对提高测向定 位精度、侦察截取概率和通信可靠性具有较好的使用效果。
关键词:  测向  环形天线  天线正交加权  天线方向图
DOI:
基金项目:
A Method for Changing Antenna Pattern Based on Cross antenna Weighted and its Application
SHI Wei,LIU Cui-hai
(Navy Submarine Academy, Qingdao 266044, China)
Abstract:
In this paper, the problem and difficulty of changing antenna radiat ion patterns is presented. According to the study on directional characteristics of the lo op antenna, a crossantennas weighted method is proposed which can chang e rapidly and exactly the direction of antenna radiation patterns after weig hting signal by the weighting coefficients when the antenna can not be rotated . Finally, application of the cross-antennas weighted method is discussed and p rospected.The method has features of higher reliability, higher precision, eas y to automatic control and independent on platform direction. Using this method has great significance to improve directionfinding(DF) positioning accuracy, reconnaissance intercep ted probability and communication reliability.
Key words:  direction finding  loop antenna  cross antennas weighted method  antenna radiation patterns
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