CRB: Sinusoid-sources' estimation using collocated dipoles/loops

Chun Kin Au-Yeung, Kainam Thomas Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)94-109
Number of pages16
JournalIEEE Transactions on Aerospace and Electronic Systems
Issue number1
Publication statusPublished - 7 May 2009


  • Arrays
  • Data mining
  • Electromagnetics
  • Estimation
  • Manifolds
  • Navigation
  • Probability density function

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering

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