Title :
Motion Detection Using Rao Test in Dual-Satellite Geolocation System
Author :
Wei, Hewen ; Xia, Changxiong ; Ye, Shangfu
Author_Institution :
Nat. Defense Key Lab. of Blind Process. of Signals, Chengdu
Abstract :
Dual-satellite geolocation system can locate a stationary emitter on Earth by using time and frequency difference of arrival (TDOA/FDOA). However, emitter motion will cause a bias on the FDOA, resulting in calculated positions with unacceptable errors. If motion is detected, the position is known to be inaccurate. An algorithm for motion detection based on TDOA/FDOA measurements is proposed by using Rao test which just needs the position estimation of stationary hypothesis. The performance is analyzed, and the availability is verified by the simulation results
Keywords :
artificial satellites; direction-of-arrival estimation; signal detection; Rao test; dual-satellite geolocation system; frequency difference of arrival; motion detection; position estimation; stationary emitter; time difference of arrival; Analytical models; Availability; Frequency; Motion detection; Motion estimation; Motion measurement; Performance analysis; Position measurement; Satellite ground stations; System testing;
Conference_Titel :
Signal Processing, 2006 8th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-9736-3
Electronic_ISBN :
0-7803-9736-3
DOI :
10.1109/ICOSP.2006.346051
