A Channel Error Calibration Method for Circular Array Radar Based on Curve Fitting

2022 IEEE 5th International Conference on Electronics Technology (ICET) Pub Date : 2022-05-13 DOI:10.1109/icet55676.2022.9824259

Mingjiang Wang, Qiujun Wang, Kun Liang, Kuoye Han

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引用次数: 1

Abstract

Channel error calibration for circular array radar can be found in many areas, such as target detection and safety surveillance. Due to curved distribution of each array element, conventional channel error correction instruments for planar array radar is no longer suitable for curved array system. Currently, mechanical correction methods for curved arrays are generally sophisticated, expensive and low efficiency. This manuscript provides a new and convenient channel error correction method for circular array radar system based on pattern fitting. Through constructions of approximation function model of single unit pattern and pattern fitting model of full array concerning physical parameters of radar, channel errors of all elements can be estimated through solving a related optimization model. After the signals fed to each element are compensated by estimated error correction factors, synthetic radiation pattern of full array can be accurately corrected. The proposed method can significantly improve beam synthesis performance of circular array radar and experiment results validate the effectiveness of suggested strategy.

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基于曲线拟合的圆阵雷达信道误差标定方法

圆阵雷达的信道误差标定在目标探测和安全监视等领域都有应用。由于各阵元的弯曲分布，传统的平面阵雷达信道误差校正仪器已不适用于弯曲阵系统。目前，曲面阵列的机械校正方法普遍复杂、昂贵且效率低。本文提出了一种基于模式拟合的圆阵雷达信道误差校正新方法。通过建立雷达物理参数的单单元方向图近似函数模型和全阵列方向图拟合模型，通过求解相应的优化模型来估计各单元的信道误差。输入到每个单元的信号经过估计误差校正因子的补偿后，可以精确地校正全阵的综合辐射方向图。该方法能显著提高圆阵列雷达的波束合成性能，实验结果验证了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 IEEE 5th International Conference on Electronics Technology (ICET)

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