New three-dimensional positioning algorithm through integrating TDOA and Newton’s method

EURASIP Journal on Wireless Communications and Networking

Junsuo Qu¹  Haonan Shi²  Chen Wu²  Chang Su²  Ning Qiao²  Abolfazl Razi³ 

[1] School of Automation, Xi’an University of Posts and Telecommunications;School of Communication Engineering, Xi’an University of Posts and Telecommunications;School of Informatics, Computing and Cyber Systems;

关键词: TDOA;    Newton’s method;    Fuzzy positioning;    Insoluble position;   

DOI  :  10.1186/s13638-020-01684-7

来源: DOAJ

【 摘 要 】

Abstract Passive time difference location is an important method for passive location. There are fuzzy positioning, no solution, and low positioning accuracy with the spherical coordinate conversion method in the four-station TDOA positioning algorithm. Focusing on these problems, we proposed a combination of TDOA and iterative Newton’s method. The positioning method uses the result obtained by the four-station TDOA location algorithm as the initial value of the iterative Newton’s method and solves the problem of no solution and fuzzy positioning caused by the four-station TDOA location algorithm by using the spherical coordinates conversion method. By simulating the target at a height of 5 km and traveling at a constant speed for 40 km, the positioning accuracy of the root mean square error is less than 45 m, which can achieve the same positioning accuracy of TDOA based on the least square algorithm. As the baseline length increases, the positioning accuracy is better than the least square algorithm.

【 授权许可】

Unknown