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A novel bearing-assisted TDOA-GROA approach for passive source localization

International Journal of Intelligent Computing and Cybernetics 2018年第1期11卷 2-19页

作者： Ji-An Luo Zhi-Wen Tan Dong-Liang Peng Key Lab for IOT and Information Fusion Technology of Zhejiang Hangzhou Dianzi UniversityHangzhouChina

Purpose–The passive source localization(PSL)problem using angles of arrival(AOA),time differences of arrival(TDOA)or gain ratios of arrival(GROA)is generally nonlinear and nontrival.In this research,the purpose of this paper is to design an accurate hybrid source localization approach to solve the PSL problem.The inspiration is drawn from the fact that the bearings,TDOAs and GROAs are complementary in terms of their geometry properties.Design/methodology/approach–The maximum-likelihood(ML)method is reexamined by using hybrid measurements.Being assisted by the bearings,a new hybrid weighted least-squares(WLS)method is then proposed by jointly utilizing the bearing,TDOA and GROA measurements.Findings–Theoretical performance analysis illustrates that the mean-square error of the ML or WLS method can attain the Cramér-Rao lower bound for Gaussian noiseover small error region.However,the WLS method has much lower computational complexity than the ML algorithm.Compared with the AOA-only,TDOA-only,AOA-TDOA,TDOA-GROA methods,the localization accuracy can be greatly improved by combining the AOAs,TDOAs and GROAs,especially for some specific geometries.Originality/value–A novel bearing-assisted TDOA-GROA method is proposed for source localization,and a new hybrid WLS estimator is presented inspired from the fact that the bearings,TDOAs and GROAs are complementary in terms of their geometry properties.

关键词： Bearing Gain ratio of arrival hybrid measurements Passive source localization Time difference of arrival

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A Novel Closed-Form Estimator for 3D Source Localization Using Angle of Arrivals and Gain Ratio of Arrivals

A Novel Closed-Form Estimator for 3D Source Localization Usi...

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第36届中国控制会议

作者： Ji-An Luo Zhi Wang Key Lab for IOT and Information Fusion Technology of Zhejiang Hangzhou Dianzi University State Kev Lab of Industrial Control Technology Zhejiang University

ISBN: (纸本)9781538629185

This paper presents a new closed-form solution for 3D source localization using the hybrid measurements of angles of arrival and gain ratios of arrival.Under the small Gaussian noise condition,we linearize the hybrid measurement equations to obtain a weighted least-squares solution and then the mean-square error matrix of the proposed method is derived.Theoretical analysis and simulations show that the proposed estimator can achieve the Cramer-Rao bound over the small error region.

关键词： Source Localization Closed-Form Solution hybrid measurements Angle of Arrival Gain Ratio of Arrival

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