Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24535
Title: CRB : Sinusoid-sources' estimation using collocated dipoles/loops
Authors: Au Yeung, CK
Wong, KT 
Keywords: Arrays
Data mining
Electromagnetics
Estimation
Manifolds
Navigation
Probability density function
Issue Date: 2009
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on aerospace and electronic systems, 2009, v. 45, no. 1, p. 94-109 How to cite?
Journal: IEEE transactions on aerospace and electronic systems 
Abstract: This work derives new asymptotic Cramér-Rao lower bounds (CRB) for the estimation of multiple pure-tone incident signals' azimuth-elevation arrival-angles, polarization parameters, frequencies, amplitudes, and temporal phases - based on data collected by spatially collocated but orthogonally oriented dipoles and/or loops. The incident sources are pure-tones at distinct, deterministic but unknown frequencies, in contrast to the case of all incident sources at one common known frequency, as has been investigated in the existing research literature on the CRB for diversely-polarized direction-finding. The derived CRBs are closed-form expressions, explicitly in terms of the signal parameters. The new CRBs presented here reveal how a constituent dipole and/or loop's presence and orientation may affect estimation precision, thereby offering guidelines to the system engineer on what dipole(s) and/or loop(s) to include or to omit in constructing the electromagnetic vector-sensor.
URI: http://hdl.handle.net/10397/24535
ISSN: 0018-9251
DOI: 10.1109/TAES.2009.4805266
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