摘要
针对方位全向米波雷达的天线阵列口径小,阵元间互耦严重,从而使得传统全向测角方法误差大的问题,提出一种互耦条件下的无模糊全向测角算法。该算法利用相位模式激励出的-1阶,0阶和1阶模进行联合测角,相比于仅利用-1阶和0阶模或者0阶和1阶模,消除了互耦对测角的影响;相比于仅利用-1阶和1阶模,可实现无模糊测角。理论推导、仿真分析以及实测结果均验证了该算法的有效性。
The array aperture of azimuth-omni-directional VHF radar is usually small,so the mutual coupling between antennas may be so intensive as to cause extra measuring error for conventional omni-directional angle measurement algorithm. To resolve this problem,an improved algorithm without ambiguity is proposed. The algorithm utilizes mode- 1,mode 0 and mode 1 excited by phase mode to measure azimuth angle. In comparison with the algorithm only using mode- 1 and mode 0,the proposed algorithm can eliminate the influence of mutual coupling to angle measurement. By comparing with the algorithm only using mode- 1 and mode 1,the proposed algorithm can get the unambiguous value of angle to be measured. Theoretical analyses,simulation results and measured data all demonstrate the effectiveness of the proposed algorithm.
出处
《现代防御技术》
北大核心
2015年第1期94-99,共6页
Modern Defence Technology
关键词
米波雷达
方位全向
互耦
无模糊测角
very high frequency（VHF） radar
azimuth omni-directional
mutual coupling
unam-biguous angle measurement
