NDLI: A novel emitter localization method using an interferometer on a spin-stabilized satellite

Content Provider	IEEE Xplore Digital Library
Author	Teng Li Fucheng Guo Wenli Jiang
Copyright Year	2010
Description	Author affiliation: School of Electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan, 410073, China (Teng Li; Fucheng Guo; Wenli Jiang)
Abstract	The conventional line-of-sight (LOS) geo-location method using two-dimension interferometer on a satellite leads to heavy payloads and it is always affected by amplitude-phase inconsistencies among receiving channels. A novel passive localization method is proposed, which only needs two receiving channels to form an interferometer on a spin-stabilized satellite. The rate of phase difference change is measured for emitter localization in this method. The equipments mounted on the satellite can be cut down greatly and localization performance is not sensitive to amplitude-phase inconsistency between the two receiving channels as well as the localization is fast and accurate by this method. The Cramer-Rao lower bound (CRLB) is presented. Numerical results indicated that the localization performance will be better if the rotating plane of the interferometer is perpendicular to the satellite position vector at the initial moment and it can be improved by increasing rotating speed of the interferometer. The particle swarm optimization (PSO) was introduced as a location algorithm. Simulation results under typical scenario indicated that localization accuracy of PSO algorithm can approach CRLB.
Starting Page	1
Ending Page	5
File Size	443050
Page Count	5
File Format	PDF
ISBN	9781424475568
e-ISBN	9781424475551
e-ISBN	9781424475544
DOI	10.1109/WCSP.2010.5633562
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellites Phase measurement Satellite broadcasting Measurement uncertainty Noise Source localization Interferometer Satellite Noise measurement Particle swarm optimization Phase difference
Content Type	Text
Resource Type	Article

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