Near real-time, semi-recursive, deformation monitoring of infrastructure using satellite radar interferometry

Ling Chang*, Ramon F. Hanssen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

5 Citations (Scopus)


Conventional PSI technology is aimed towards estimating displacement time series of persistently coherent scatterers (PS) from a given set of radar acquisitions. Whenever the data from a new acquisition become available, the estimators for the parameters of interest will be computed by re-adjustment of the system of equations. This strategy of batch processing after a new acquisition is not optimal to identify changes in the behavior of single scatterer. For monitoring the structural health of buildings and civil infrastructure, there is a need for fast identification of anomalous behavior of scatterers, including the likelihood estimations of such detection results. Here we propose a general framework for the detection of anomalous behavior of (parts of) buildings and civil infrastructure by generating a sequential update of conventional interferograms, in combination with the parallel processing of the data using time series (PSI) interferometry. By estimating and analyzing the phase change per arc from each wrapped interferogram, abnormal changes can be detected fast and reliably. Our approach is demonstrated on a near-collapse of a building in Heerlen, the Netherlands, using Radarsat-2 data.

Original languageEnglish
Title of host publication2012 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Place of PublicationPiscataway, NJ
Number of pages4
ISBN (Electronic)978-1-4673-1159-5
ISBN (Print)978-1-4673-1160-1
Publication statusPublished - 2012
Externally publishedYes
EventIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012: Remote Sensing for a Dynamic Earth - Munich, Germany
Duration: 22 Jul 201227 Jul 2012

Publication series

NameIEEE International Geoscience and Remote Sensing Symposium (IGARSS)
ISSN (Print)2153-6996
ISSN (Electronic)2153-7003


ConferenceIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012
Abbreviated titleIGARSS
Internet address


  • Near real-time
  • Semi-recursive deformation monitoring

Cite this