Near field targets localization using bistatic MIMO system with spherical wavefront based model
Near field targets localization using bistatic MIMO system with spherical wavefront based model
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DOI：
10.23919/eusipco.2017.8081642
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发表时间：
2017-08
期刊：
影响因子：
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通讯作者：
P. Chargé;Yide Wang;P. Singh
中科院分区：
文献类型：
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作者：
P. Chargé;Yide Wang;P. Singh
提出了一种基于均匀线阵的双基地MIMO系统基于子空间的近场目标定位方法。该方法采用基于球面波前的精确模型，避免了现有的近场源定位文献中的菲涅耳近似所引入的系统误差，而菲涅耳近似通常是在波前简化近场源信号模型。通过避免这种近似，我们已经显著地提高了估计精度。此外，与现有的大多数近场源定位技术不同，该方法适用于阵元间距大于四分之一载流子波长的阵列。
This paper proposes a subspace based near field targets localization method with bistatic MIMO system consisting of uniform linear transmitting and receiving arrays. The proposed method uses the spherical wavefront based exact model to avoid the systematic error introduced by the Fresnel approximation, which is usually made on the wavefront to simplify the signal model for a near field source in the existing literature on near field sources localization. By avoiding this approximation, we have significantly improved the estimation accuracy. Additionally, unlike most of the existing near field sources localization techniques, the proposed method works for the array with interelement spacing greater than a quarter of the carrier wavelength.