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Influence of the metallic shield on the antenna temperature calibration for the microwave radiometer

  • Xiao Hui*
  • , Miao Jungang
  • , Yang Yujie
  • , Peng Yi
  • *Corresponding author for this work
  • Beihang University
  • Beijing Institute of Radio Metrology and Measurement

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In the calibration of a microwave radiometer, the calibration load is equipped with a metallic shield. The metallic shield is found to introduce aberration to the measurements of the antenna temperature. In this work, a ray-tracing model is constructed for the aberration analysis, which is based on the radiation transfer theory taking into account both the conductivity of the metal and the temperature distribution of the shield. Calculation results indicate that the temperature aberration due to the metal shield can be up to a few tenths of Kelvin, depending on the metal, the geometry of the shield and the size of the antenna. The calculation result is also compared with the experimental data.

Original languageEnglish
Title of host publicationIEEE 2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE
PublisherIEEE Computer Society
Pages648-651
Number of pages4
ISBN (Print)1424410444, 9781424410446
DOIs
StatePublished - 2007
Event2007 IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies for Wireless Communications, MAPE 2007 - Hangzhou, China
Duration: 14 Aug 200717 Aug 2007

Publication series

NameIEEE 2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE

Conference

Conference2007 IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies for Wireless Communications, MAPE 2007
Country/TerritoryChina
CityHangzhou
Period14/08/0717/08/07

Keywords

  • Brightness temperature
  • Radiation transfer theory
  • Radiometer calibration

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