Open AccessMethod for TDOA localisation in over‐the‐horizon environments
Author(s) -
Liu JianXin,
Mao XingPeng
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0279
Subject(s) - multilateration , computer science , a priori and a posteriori , algorithm , path (computing) , horizon , over the horizon radar , signal (programming language) , noise (video) , mathematical optimization , artificial intelligence , acoustics , telecommunications , mathematics , philosophy , radar , physics , geometry , epistemology , node (physics) , image (mathematics) , programming language
Here, the authors propose a new over‐the‐horizon time‐difference‐of‐arrival localisation model based on the ground‐wave and simultaneously put forward a modified semi‐definite programming algorithm, which is called Ground‐wave semi‐definite programming (G‐SDP). If both the target and the base stations are on the surface of the earth and far away from each other, the propagation path of the signal is a curve along the surface instead of a straight line, thus making the traditional positioning model inefficient. To overcome the problem, they develop a novel localisation model and explore a priori information to achieve improvements on SDP algorithms. An iteration trick is also utilised to obtain better performance when the signal‐to‐noise ratio is low. The simulation results show the merits of the improved model and G‐SDP.