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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >High-performance MIMO imaging radar with hybrid transmit and receive arrays
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High-performance MIMO imaging radar with hybrid transmit and receive arrays

机译：具有混合发射和接收阵列的高性能MIMO成像雷达

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摘要

In this study, a sparse multiple-input multiple-output radar system with difference co-array processing is presented. It consists of two non-uniform transmitter arrays in split configuration and a symmetrical hybrid receiver array. A combination of a periodically thinned array and two non-uniform sub-arrays is used to construct the receiver structure. A low-cost three-step optimization procedure is proposed to synthesize the array arrangement with system constraints. In addition, a combination of fast Fourier transform (FFT) and MUltiple SIgnal Classification (MUSIC) techniques is applied for a range/direction-of-arrival estimation with low computational effort. High angular resolution is achieved in the MUSIC spectrum by implementing a difference co-array concept together with spatial smoothing. A thinning rate in excess of 95% is demonstrated. Lastly, the performance of the proposed system is validated by measurements of point scatterers and extended objects.
机译：在这项研究中，提出了一种具有差分协同阵列处理的稀疏多输入多输出雷达系统。它由两个拆分配置的非均匀发送器阵列和一个对称的混合接收器阵列组成。周期性变细的阵列和两个非均匀子阵列的组合用于构造接收器结构。提出了一种低成本的三步优化程序来合成具有系统约束的阵列布置。另外，快速傅里叶变换（FFT）和多信号分类（MUSIC）技术的组合可用于计算范围/到达方向的估计，且计算量较小。通过实现差分共阵列概念以及空间平滑，可以在MUSIC光谱中实现高角度分辨率。证实了超过95％的稀化率。最后，通过对点散射体和扩展对象的测量来验证所提出系统的性能。

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