Title :
Passive location method and accuracy analysis with phase difference rate measurements
Author :
Deng, X.-P. ; Liu, Z. ; Jiang, W.-L. ; Zhou, Y.-Y. ; Xu, Y.-W.
Author_Institution :
Nat. Univ. of Defense Technol., Changsha, China
fDate :
10/1/2001 12:00:00 AM
Abstract :
The interferometer is the traditional instrument used to find the direction of an emitter by measuring the phase difference of arrival of its RF emissions. Bearings-only motion analysis indicates that an observer with these direction measurements can locate the position of the emitter in a period of time. A novel passive location method is introduced with phase difference and phase difference rate measurements with the interferometer mounted on a moving observer. The accuracy of a passive location system with these measurements is analysed. The results show a significantly improved performance compared with the traditional method
Keywords :
direction-of-arrival estimation; measurement errors; observers; phase measurement; radio direction-finding; radio tracking; radiowave interferometers; RF emissions; bearings-only motion analysis; direction measurements; emitter direction finding; interferometer; location system accuracy analysis; moving observer; passive location method; phase difference measurement; phase difference rate measurements; short-time measurements;
Journal_Title :
Radar, Sonar and Navigation, IEE Proceedings -
DOI :
10.1049/ip-rsn:20010540
