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Sensitivity analysis for antenna near-field imaging

In English

Författare

Summary, in English

Although imaging and inverse scattering problems have been thoroughly studied during the last century, there is only a partial understanding of these complex problems. Most of the efforts have been placed on the development of efficient inversion algorithms and mathematical uniqueness results. In comparison, there are very few results and a limited knowledge about the information content in the inversion data. In this paper, we provide a mathematical framework for sensitivity analysis of antenna near-field imaging problems, based on the multipole expansion of the electromagnetic field and the Fisher information to quantify the quality of data. By exploiting this framework, a fundamental relation for accuracy and resolution is formulated based on the Cramer-Rao bound (CRB). The sensitivity analysis is illustrated using a relevant example with cylindrical measurement data.

Publiceringsår

2007

Språk

Engelska

Sidor

94-101

Publikation/Tidskrift/Serie

IEEE Transactions on Signal Processing

Volym

55

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • near-field imaging
  • estimation theory
  • inverse
  • problems
  • antenna theory
  • Fisher information

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1053-587X