Localization Using Time-Delay and Doppler Shift by Moving Monostatic Sensors

Autor:	Gang Wang, Haiyan Wang, Tianyi Jia, K.C. Ho
Rok vydání:	2022
Předmět:	Work (thermodynamics) Model equation Computer science Aerospace Engineering Motion (geometry) Auxiliary variables Reduction (complexity) symbols.namesake Noise tolerance symbols Relaxation (approximation) Electrical and Electronic Engineering Algorithm Doppler effect
Zdroj:	IEEE Transactions on Aerospace and Electronic Systems. 58:2560-2567
ISSN:	2371-9877 0018-9251
Popis:	This paper considers the localization of a stationary target using time delay and Doppler shift measurements obtained by moving monostatic sensors that takes the sensor motion during the localization period into consideration. Starting from the model equation of a previous work, we propose a new formulation of optimization through constrained weighted least-squares to solve for the target location by developing two new localization solutions, one in closed-form and the other by semi-definite relaxation. The new formulation enables the reduction of the minimum number of auxiliary variables in the closed-form solution and allows additional constraints in the SDR solution, resulting in fewer sensors needed in the former and less relaxation error and higher noise tolerance in the latter. Simulations validate the better performance of the proposed solutions than the previous ones.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fdabc06d0973a12ad5ab350a4e12390f https://doi.org/10.1109/taes.2021.3117660 Zobrazit plný text záznamu