在多阵面水平干涉仪侦察系统中，当入射信号的俯仰角不为0时，由于投影效应，不同阵面的方位角测量结果将存在偏差。为解决这一问题，本文提出一种基于相邻阵面水平干涉仪的联合二维测向算法，每个阵面仅需配置水平干涉仪天线阵列，相邻阵面首先测量出各自阵面的方位角，通过联合计算求得入射信号的真实方位角和俯仰角。同时相邻阵面安装夹角设计更为灵活，易于扩展，且相对二维干涉仪天线阵列，阵面体积能有效减小。仿真结果表明，基于相邻阵面水平干涉仪的联合二维测向算法能够有效解决由于存在俯仰角而导致的一维干涉仪测向偏差的问题。
In the multi-array horizontal interferometer reconnaissance system, when the pitch angle of the incident signal is not zero, the azimuth measurement results from different arrays will be biased due to the projection effect. In order to solve this problem, this paper proposes an innovation joint two-dimensional direction-finding algorithm based on horizontal interferometer of adjacent arrays. Each array of the system only needs to be equipped with a horizontal interferometer antenna array. The two adjacent arrays first measure their respective azimuth angles, and then obtain the true azimuth and pitch angles of the incident signals through joint calculation. At the same time, the design of installation angle between adjacent arrays is more flexible and then the system is easy to expand. And compared to the two-dimensional interferometer antenna array, the volume can be effectively reduced. The simulation results show that the joint two-dimensional direction-finding algorithm based on horizontal interferometer of adjacent arrays can effectively solve the problem of one-dimensional direction-finding deviation caused by the presence of pitch angle.
2025,47(8): 114-118 收稿日期：2024-5-27
DOI：10.3404/j.issn.1672-7649.2025.08.019
分类号：TN974
作者简介：苏生(1993-),男,硕士,工程师,研究方向为阵列信号处理
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