Efficient Range Estimation in Beat Radio Interferometry

被引：4

作者：

Xu, Bing ^{[1
]}

Qi, Wangdong ^{[1
]}

Wei, Li ^{[1
]}

Zhang, Su ^{[1
]}

机构：

[1] PLA Univ Sci & Technol, Nanjing 210007, Jiangsu, Peoples R China

来源：

IEEE ACCESS | 2017年 / 5卷

基金：

中国国家自然科学基金;

关键词：

Beat radio interferometry; radio interferometric positioning system; range estimation; frequency estimation; FFT-based method; CHINESE REMAINDER THEOREM; MAXIMUM-LIKELIHOOD-ESTIMATION; FREQUENCY ESTIMATION; DICHOTOMOUS SEARCH; EXCESS FRACTIONS; PERFORMANCE; SELECTION;

D O I：

10.1109/ACCESS.2017.2679724

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The beat radio interferometry (BRI) is a novel ranging scheme that achieves high accuracy with low-cost devices. A major problem with BRI is the lack of an efficient range estimation method that is valid in general measurement configurations and accommodates large-scale scenarios. In this paper, we present a new model of BRI and reveal that range estimation in it is equivalent to single tone frequency estimation. Such a revelation has two natural outcomes: the first is the Cramer-Rao lower bound (CRLB) of BRI range estimation; the second is an efficient fast Fourier transform (FFT)-based method that works in arbitrary measurement configurations and large-scale scenarios. Simulation results show that the FFT-based method asymptotically attains the CRLB and is orders of magnitude faster than currently available methods.

引用

页码：3834 / 3840

页数：7

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