Evaluation of accuracy in PS-based radar interferometry with simulated data

Qiang Chen, Xiaoli Ding, Guoxiang Liu, Yongshu Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

This paper analyzes the relationship between the noise level in interferometric phases at permanent scatters (PS) and the accuracy in deformation measurements with the PS-based differential SAR interferometry (PS-DInSAR). The study is carried out based on interferograms that are simulated with parameters of 26 ERS-1/2 SAR scenes over Shanghai. The results show that in the cases of high phase signal to noise ratio (noise level lower than ±0.5 rad), the accuracy of the deformation rates estimated with PS-DInSAR can be up to about ±2 mm/a, and the accuracy of the estimated elevations is about ±1 m. The accuracies decrease with the increase of the noise level of the phase data. When the noise level is ±0.8 rad, the accuracy of deformation measurements decreases to ±1 cm/a and that of elevation measurements decreases to ±3 m.
Original languageEnglish
Title of host publication2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2007
Pages2110-2113
Number of pages4
DOIs
Publication statusPublished - 1 Dec 2007
Event2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2007 - Barcelona, Spain
Duration: 23 Jun 200728 Jun 2007

Conference

Conference2007 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2007
Country/TerritorySpain
CityBarcelona
Period23/06/0728/06/07

Keywords

  • Deformation detection
  • Differential SAR interferometry
  • Permanent scatterers

ASJC Scopus subject areas

  • Geology
  • Software

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