The TDOA Localization Algorithm Based on Parallel Hierarchical Measurement
ZOU Dongyao
LIU Biwei
YANG Wei
XIANG Jiayu
Abstract：The precise time synchronization technology is required by the time difference of arrival (TDOA) positioning algorithm.Under the low precision of traditional time synchronization technology,this paper proposes a joint positioning algorithm gain ratio of arrival based on the TDOA and GROA of a paral-lel hierarchical time interval measurement. Firstly, we establish the optimization equation containing La-grange coefficient based on TDOA and GROA joint positioning model.And then we solve the equation by constrained weighted least squares algorithm ( TSWLS);at the same time,we use the method of parallel hierarchical time interval measurement to control the time synchronization of positioning model.The exper-iment and analysis show that the proposed algorithm accuracy increases by 25 dB compared with the tradi-tional TDOA location algorithm,which has relatively stable and high positioning precision.
Keywords：time synchronizationtime differences of arrival(TDOA)gain ratios of arrival(GROA)least squaresparallel hierarchical measurement
Publication Date：2016-09-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 435-441 )