Study on joint passive localization using time difference of arrival and frequency difference of arrival to improve the accuracy of four-satellite localization

• Published in: Advances in mechanical engineering Vol. 9; no. 12; p. 168781401773745
• Main Authors: Xiansheng, Guo, Haoran, Lu, Yan, Zhang, Botao, Zeng, Yebo, Guo
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.12.2017; Sage Publications Ltd; SAGE Publishing
• Subjects: Accuracy; Algorithms; Authorship; Computer simulation; Diamonds; Dilution; Error analysis; Factor analysis; Geometric dilution of precision; Localization; Localization method; Position measurement; Velocity; geometric dilution of precision; constellation configuration; Four-satellite localization; time-difference-of-arrival/frequency-difference-of-arrival
• ISSN: 1687-8132; 1687-8140; 1687-8140
• DOI: 10.1177/1687814017737451

In order to reduce the influence of time-difference-of-arrival measurement error on localization accuracy of time-difference-of-arrival-based four-satellite localization, we first introduce the frequency-difference-of-arrival information to the existing four-satellite time-difference-of-arrival localization algorithm and propose a time-difference-of-arrival/frequency-difference-of-arrival joint four-satellite localization method. The time-difference-of-arrival/frequency-difference-of-arrival localization method can improve the localization accuracy significantly as compared with time-difference-of-arrival localization method. We also derive the geometric dilution of precision of four-satellite localization for precision factor analysis. The simulation results show that, as compared with time-difference-of-arrival localization, absolute position measurement accuracy has little influence on time-difference-of-arrival/frequency-difference-of-arrival localization accuracy. Under the same conditions, the localization accuracy of four-satellite time-difference-of-arrival/frequency-difference-of-arrival is better than that of four-satellite time-difference-of-arrival. And time-difference-of-arrival/frequency-difference-of-arrival localization improves the distribution uniformly of geometric dilution of precision regarding the diamond configuration.