摘要
测向在现代通信对抗中起到非常重要的作用,多径效应会对无线信号测向结果产生很大的影响。目前各种测向方法都无法消除多径对测向的影响。采用矢量分析的方法,建立相对简单的两径和三径模型,对反射信号与直射信号的合成场强进行计算,对反射信号影响测向的公式进行推导,并使用仿真软件模拟两径和三径对测向时水平方位角和俯仰角的误差影响,得到影响测向误差的规律性结论,对实际测向试验场地的选择、试验场区环境的布置有一定的指导意义。
Direction finding plays a very important role in the modern communication countermeasure. Multipath effect will greatly affect wireless signal measurement. The influence can＇ t be eliminated nowadays. In this paper, vector analysis method is used to calculate the influence of direction finding from multipath effect, simple two-path and threepath model are established to derive the Formula of the influence. Then the influence to the azimuth and pitching of direction finding are simulated, the regularity conclusion will help to choose the testing ground and the environment.
出处
《电子测量技术》
2010年第1期29-31,39,共4页
Electronic Measurement Technology
关键词
测向
多径效应
电波传播
direction finding
multipath effects
radio propagation
