Kalman-filter-based approach for multisensor, multitrack, and multitemporal InSAR

Jun Hu, Xiaoli Ding, Zhi Wei Li, Jian Jun Zhu, Qian Sun, Lei Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

58 Citations (Scopus)


A Kalman-filter-based approach is presented for resolving 3-D surface displacements using multisensor, multitrack, and multitemporal interferometric synthetic aperture radar (SAR) measurements. Measurements from each interferogram are projected into the three reference directions and combined in the Kalman filter model with displacements determined from previous interferograms to produce updated displacement measurements. Both simulated and real data sets are used to test the proposed approach. It is found that the method works well when the measurement noise is low. The displacements in the north direction, however, are much lower in accuracy than those in the other two directions and even become unstable when the measurement noise is high due to the polar-orbiting imaging geometries of the current satellite SAR sensors.
Original languageEnglish
Article number6423274
Pages (from-to)4226-4239
Number of pages14
JournalIEEE Transactions on Geoscience and Remote Sensing
Issue number7
Publication statusPublished - 1 Feb 2013


  • 3-D measurements
  • Differential interferometric synthetic aperture radar (SAR) (InSAR) (DInSAR)
  • Kalman filter
  • multisensor
  • multitemporal
  • multitrack

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • General Earth and Planetary Sciences


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