| 摘要: |
| 为改进双基地EMVS-MIMO雷达中2D-DOD和2D-DOA的估计性能，本文提出基于异点L型EMVS结构的发射阵列和接收阵列。相比于共点式EMVS发射阵列和接收阵列，稀疏异点EMVS结构在相同阵元数情况下可以降低接收端的单快拍数据维度。并且，借助于自动参数配对的旋转不变算法和精粗估计结合解模糊处理过程，本文设计的稀疏异点L型EMVS阵列可以实现对2D-DOD和2D-DOA的精确估计。同时，本文利用重构的EMVS广义空间响应给出发射端和接收端极化参数的求解过程。仿真实验进一步验证了异点L型阵列多维参数估计的有效性。 |
| 关键词: 双基地EMVS-MIMO雷达 2D-DOD估计 2D-DOA估计 异点L型结构 旋转不变算法 |
| DOI： |
| 分类号:TN958 |
| 基金项目:国家自然科学基金(No.62071476,61890545,61890542,61890540),长沙市科技计划项目经费资助(No.Kq2209002) |
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| High Accuracy 2D-DOD and 2D-DOA Estimation for bistatic EMVS-MIMO Radar With Non-collocating L-shaped Structure |
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| Abstract: |
| In order to improve the estimation performance of 2D-DOD and 2D-DOA in bistatic EMVS-MIMO radar, a non-collocating L-shaped EMVS structure is designed in this paper. Compared to the collocating EMVS transmit/receive array, the dimension of the sparse non-collocating EMVS receive data with a single snapshot can be reduced under the same number of array elements. Moreover, for the deigned sparse L-shaped EMVS structure, the automatically paired 2D-DOD and 2D-DOA estimation can be effectively realized via the rotational invariance technique and the combination of the high-accuracy and low-accuracy estimated results. And, the transmit/receive polarization parameters are also derived by using the reconstructed EMVS spatial response. Additional simulation results further verify the effectiveness and superiority of the non-collocating L-shaped structure for multi-dimensional parameter estimation. |
| Key words: bistatic EMVS-MIMO radar 2D-DOD estimation 2D-DOA estimation non-collocating L-shaped structure rotational invariance technique |