15 March 1998 Applicability of interferometric SAR technology to ground movement and pipeline monitoring
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Abstract
This paper summarizes the findings of a cooperative effort between NOVA Gas Transmission Ltd. (NGTL), the Italian Natural Gas Transmission Company (SNAM), and Arista International, Inc., to determine whether current remote sensing technologies can be utilized to monitor small-scale ground movements over vast geographical areas. This topic is of interest due to the potential for small ground movements to cause strain accumulation in buried pipeline facilities. Ground movements are difficult to monitor continuously, but their cumulative effect over time can have a significant impact on the safety of buried pipelines. Interferometric synthetic aperture radar (InSAR or SARI) is identified as the most promising technique of those considered. InSAR analysis involves combining multiple images from consecutive passes of a radar imaging platform. The resulting composite image can detect changes as small as 2.5 to 5.0 centimeters (based on current analysis methods and radar satellite data of 5 centimeter wavelength). Research currently in progress shows potential for measuring ground movements as small as a few millimeters. Data needed for InSAR analysis is currently commercially available from four satellites, and additional satellites are planned for launch in the near future. A major conclusion of the present study is that InSAR technology is potentially useful for pipeline integrity monitoring. A pilot project is planned to test operational issues.
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Dimitri A. Grivas, Dimitri A. Grivas, Chakravarthy Bhagvati, Chakravarthy Bhagvati, B. Cameron Schultz, B. Cameron Schultz, Alan Trigg, Alan Trigg, Moness Rizkalla, Moness Rizkalla, } "Applicability of interferometric SAR technology to ground movement and pipeline monitoring", Proc. SPIE 3398, Nondestructive Evaluation of Utilities and Pipelines II, (15 March 1998); doi: 10.1117/12.302531; https://doi.org/10.1117/12.302531
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