Interferometric triherence for ground movements monitoring

Yrjö Rauste, Machiko Louhisuo, Jean-Baptiste Henry, Shigeki Kuzuoka, Tosikazu Morohoshi, Tuomas Häme

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

    1 Citation (Scopus)

    Abstract

    Minor movements - of the order of 10 cm - of earth surface often precede landslides. Interferometric techniques have a potential of detecting such movements before a landslide occurs. An interferometric quantity - called triherence - was adopted for mapping of points where the interferometric phase is stable over at least one triplet consisting of three consecutive SAR scenes in suitable interferometric conditions. The results from JERS and ASAR triplets of the two study sites suggest that the triherence measure enables to pick up some points in the landscape where the phase behaviour of SAR pixels is stable. Most of the stable points were identified in urban areas but many of them can also be found in natural areas. The initial hypothesis, that in case of sparse vegetation or sparse forest cover, some highly coherent scatterers might be found, seems to be pertinent even if it still needs to be thoroughly checked on the ground.
    Original languageEnglish
    Title of host publication2006 IEEE International Symposium on Geoscience and Remote Sensing, IGARSS 2006
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages1883 - 1885
    ISBN (Print)0-7803-9510-7
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA4 Article in a conference publication
    EventIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2006 - Denver, CO, United States
    Duration: 31 Jul 20064 Aug 2006

    Conference

    ConferenceIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2006
    Abbreviated titleIGARSS 2006
    Country/TerritoryUnited States
    CityDenver, CO
    Period31/07/064/08/06

    Keywords

    • SAR
    • triherence
    • ground movement

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