| 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: |
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| 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 crossantennas 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 directionfinding(DF) positioning accuracy, reconnaissance intercep
ted
probability and communication reliability. |
| Key words: direction finding loop antenna cross antennas weighted method antenna radiation patterns |
