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Electromagnetic Vortex Imaging Based on Multiple Measurement Vectors in Low SNR Condition

机译:低信噪比条件下基于多个测量向量的电磁涡旋成像

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摘要

Vortex electromagnetic wave with orbital angular momentum (OAM) has been a great application prospect in the radar imaging field. Due to the use of sparse recovery theory, downsampling makes electromagnetic (EM) vortex imaging suffer from a low signal to noise ratio (SNR). Therefore, the sparse representation model based on multiple measurement vectors (MMV) is proposed, and the maximal measurement number of MMV is derived. Simulation results indicate that the proposed model can increase recovery correct probability, and obtain better imaging results in low SNR condition.
机译:具有轨道角动量(OAM)的涡旋电磁波在雷达成像领域具有广阔的应用前景。由于使用稀疏恢复理论,下采样使电磁(EM)涡旋成像的信噪比(SNR)低。因此,提出了一种基于多个测量向量(MMV)的稀疏表示模型,并推导了MMV的最大测量次数。仿真结果表明,该模型在低信噪比条件下可以提高恢复正确率,并获得较好的成像效果。

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