Title :
Analysis on DTO and DFO estimation accuracy of radar signal for location by dual satellites
Author :
Hui-chuan Zhang ; Zheng-bo Sun ; Yu-xiang Yang ; Chang-xiong Xia
Author_Institution :
Sci. & Technol. on Blind Signal Process. Lab., Chengdu, China
Abstract :
Radar emitter´s position can be estimated by dual satellites location system utilizing DTO (differential time offset) and DFO (differential frequency offset). Signal model received by dual satellites is given and the influence to signal accumulation by relative motion is analyzed in this paper. Then the upper limit of accumulated pulses´ number is given. The Cramer-Rao lower bounds (CRLB) of DTO and DFO estimation of radar pulse signal are derived based on the CRLB of continuous signal. By Mount-Carlo simulations, the conclusions drawn in this paper are proved. The results can provide a theoretical basis for selection of accumulation duration and analysis of parameter estimation accuracy.
Keywords :
Monte Carlo methods; parameter estimation; radar signal processing; CRLB; Cramer-Rao lower bounds; DFO estimation accuracy; DTO estimation accuracy; continuous signal; differential frequency offset; differential time offset; dual satellites; parameter estimation; radar emitter position; radar pulse signal; satellites location system; signal accumulation; signal model; theoretical basis; Cramer-Rao lower bound; DTO/DFO; accumulation duration; dual leo-satellites; radar signal;
Conference_Titel :
Computer Science and Network Technology (ICCSNT), 2012 2nd International Conference on
Conference_Location :
Changchun
Print_ISBN :
978-1-4673-2963-7
DOI :
10.1109/ICCSNT.2012.6525919
