摘要
以恒模直线阵为对象 ,研究了智能天线系统存在瞄准误差、阵元位置误差、阵元失效等误差情况下对恒模直线阵干扰抑制能力等系统性能的影响。仿真结果表明 ,瞄准方向误差和阵元失效对恒模直线阵的影响较小 ,而对阵元位置误差敏感性稍高。但与传统的波束形成器相比 ,恒模直线阵中信号恢复对阵列结构的非理想性并不敏感。
The sensitivity of a CM array to system error in the presence of look direction error, element failure and element position error is researched. Computer simulations are presented to illustrate the influence and the bound of these errors. The system performance is satisfied within look direction error(±5°). When the number of array available elements in element failure system is more than that of signals, the system quality can be assured. One-thirtieth of a wavelength displacement in all array elements can not lead the CM array system to failure. The results are useful for further research on smart antenna applications and robust beam forming.
出处
《电波科学学报》
EI
CSCD
2003年第6期717-721,共5页
Chinese Journal of Radio Science
基金
广东省自然科学基金资助项目 (0 2 10 89)
