摘要
首先介绍了相位干涉仪的算法原理，接着对二维干涉仪测向的数学方程进行推导。随后研究了影响二维干涉仪测向算法精度的限制性因素，包括入射角度、短基线和长基线的长度、虚拟基线、信噪比、阵列位置等。着重对解模糊正确概率和均方根误差进行了仿真。在分析各种限制性因素的基础上，文中提供了一个二维干涉仪测向技术的设计实例。针对设计实例的Matlab仿真结果验证了设计的有效性，其测向均方根误差优于0．9°。
Firstly, the principle of phase interferometer direction finding algorithm is introduced briefly. Then the mathematical for- mula of 2D interferometer direction finding is deduced. A lot of limiting factors could affect the accuracy of 2D interferometer direc- tion finding, which includes incident beam angle, length of short and long baseline, virtual baseline, signal noise ratio,position of array elements. The focus is on the correct probability of ambiguity-solving and the root-mean-square error. Based on the analysis of the Limiting factors, one design example of 2D interferometer direction finding technology is presented. According to the exam- ple, the result of MATLAB simulation proves the availability of the design. The root-mean-square error is less than 0.9 degree.
出处
《现代雷达》
CSCD
北大核心
2018年第2期44-48,共5页
Modern Radar
关键词
二维相位干涉仪
虚拟基线
解模糊
two-dimensional phase interferometer
virtual baseline ~ ambiguity-solving
