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High resolution SAR performance limitation by the change of tropospheric refractivity

  • Jinping Sun*
  • , Yuekai Bi
  • , Yanping Wang
  • , Wen Hong
  • *Corresponding author for this work
  • Beihang University
  • CAS - Institute of Electronics

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

Abstract

The imaging performance of high resolution airborne Synthetic Aperture Radar (SAR) system can be affected by phase errors resulted from the change in refractive index in the troposphere. Using the Hopfield model, we analyze the change in tropospheric refractivity, and give a calculation method for the apparent range between radar and a ground target. The mechanism in which the change in refractive index affects the high resolution airborne SAR performance is also analyzed. With a numerical calculation method, the maximum detection ranges of X-band and Ku-band SAR with different resolutions are obtained, and effects of the atmospheric refraction on the SAR image focusing are studied by simulations.

Original languageEnglish
Title of host publicationProceedings of 2011 IEEE CIE International Conference on Radar, RADAR 2011
Pages1448-1451
Number of pages4
DOIs
StatePublished - 2011
Event6th International Conference on Radar, RADAR 2011 - Chengdu, China
Duration: 24 Oct 201127 Oct 2011

Publication series

NameProceedings of 2011 IEEE CIE International Conference on Radar, RADAR 2011
Volume2

Conference

Conference6th International Conference on Radar, RADAR 2011
Country/TerritoryChina
CityChengdu
Period24/10/1127/10/11

Keywords

  • Atmospheric refractivity
  • High resolution
  • Imaging performance
  • SAR

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