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度。

Firstly, the principle of phase interferometer direction finding algorithm is introduced briefly. Then the mathematical formula of 2D interferometer direction finding is deduced. A lot of limiting factors could affect the accuracy of 2D interferometer direction 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 example, the result of MATLAB simulation proves the availability of the design. The root-mean-square error is less than 0. 9 degree.

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