摘要
幅相误差是制约天线阵系统性能的一个重要因素。本文通过建立存在随机幅相误差时的均匀圆阵列模型,分析了此时均匀圆阵列场方向图函数和功率方向图函数的统计特性;围绕方向性系数、旁瓣电平和半功率波瓣宽度三个系统指标,计算了随机幅相误差对均匀圆阵列系统性能的影响;最后在数值分析的基础上进行了计算机仿真和验证。
Amplitude and phase errors are an important factor that can restrict the performance of array antenna. This paper analyzes the statistical performances of the radiation pattern and the power pattern of uniform circular array, and calculates the effect of amplitude and phase errors on antenna gain, sidelobe level and beam width of uniform circular array. The analysis and theoretical results derived here are verified by computer simulation.
出处
《雷达科学与技术》
2005年第2期123-128,共6页
Radar Science and Technology
关键词
幅相误差
均匀圆阵列
系统性能
amplitude and phase errors
uniform circular array
system performance
