双基地多输入多输出雷达收发四维角联合估计

发布时间：2018-03-16 10:04

本文选题：兵器科学与技术　切入点：多输入多输出雷达　出处：《兵工学报》2017年05期 　论文类型：期刊论文

【摘要】：基于收发分置双L型阵多输入多输出雷达,提出了利用阵列接收数据的互相关去噪特性,进行目标辐射源收发四维角高精度联合估计的新方法。通过对匹配滤波后的阵列接收数据进行重构和互相关操作,可有效消除空间噪声影响,提高角度测量精度。将收或者发二维角的联合估计转化为两个一维估计,且只需对低维度矩阵进行特征分解,减轻了运算负担。利用特征值求取收或者发俯仰角,利用相应的特征向量构造出的虚拟阵列响应矩阵求取与其自动配对的收或者发方位角。仿真实验表明,该算法以较低的运算复杂度,实现了对空域多目标收发四维角的准确估计,估得的收或者发二维角能够自动配对,在低信噪比和短采样数据情形下,具有优良的角度估计性能。
[Abstract]:Based on the dual-L array multi-input and multi-output radar, the cross-correlation de-noising characteristics of the data received by the array are proposed. A new method for high precision joint estimation of the four dimensional angle of target emitter is proposed. The spatial noise can be effectively eliminated by the reconstruction and cross-correlation operation of the array data received by the matched filter. To improve the accuracy of angle measurement, the joint estimation of two dimensional angles is transformed into two one-dimensional estimators, and it is only necessary to decompose the low-dimensional matrix to reduce the computational burden. The response matrix of the virtual array constructed by the corresponding eigenvector is used to calculate the receiving or transmitting azimuth angle of its automatic pairing. The simulation results show that the algorithm has a lower computational complexity. An accurate estimation of the four dimensional angle of multi-target transceiver in spatial domain is realized. The estimated two dimensional angle can be paired automatically and has good angle estimation performance in the case of low SNR and short sampling data.
【作者单位】：中国空间技术研究院西安分院;中国石油天然气管道工程有限公司;
【分类号】：TN958

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