Evaluation of Atmospheric Effects on Interferograms Using DEM Errors of Fixed Ground Points
College of Industrial Technology, Nihon University, Chiba 2758575, Japan
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Sensors 2018, 18(7), 2336; https://doi.org/10.3390/s18072336
Received: 9 July 2018
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Accepted: 16 July 2018
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Published: 18 July 2018
(This article belongs to the Special Issue Synthetic Aperture Radar (SAR) Technology: New Perspectives Offered by New-Generation and Forthcoming SAR Sensors)
High-resolution synthetic aperture radar (SAR) data are widely used for disaster monitoring. To extract damaged areas automatically, it is essential to understand the relationships among the sensor specifications, acquisition conditions, and land cover. Our previous studies developed a method for estimating the phase noise of interferograms using several pairs of TerraSAR-X series (TerraSAR-X and TanDEM-X) datasets. Atmospheric disturbance data are also necessary to interpret the interferograms; therefore, the purpose of this study is to estimate the atmospheric effects by focusing on the difference in digital elevation model (DEM) errors between repeat-pass (two interferometric SAR images acquired at different times) and single-pass (two interferometric SAR images acquired simultaneously) interferometry. Single-pass DEM errors are reduced due to the lack of temporal decorrelation and atmospheric disturbances. At a study site in the city of Tsukuba, a quantitative analysis of DEM errors at fixed ground objects shows that the atmospheric effects are estimated to contribute 75% to 80% of the total phase noise in interferograms.
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MDPI and ACS Style
Nonaka, T.; Asaka, T.; Iwashita, K. Evaluation of Atmospheric Effects on Interferograms Using DEM Errors of Fixed Ground Points. Sensors 2018, 18, 2336. https://doi.org/10.3390/s18072336
AMA Style
Nonaka T, Asaka T, Iwashita K. Evaluation of Atmospheric Effects on Interferograms Using DEM Errors of Fixed Ground Points. Sensors. 2018; 18(7):2336. https://doi.org/10.3390/s18072336
Chicago/Turabian StyleNonaka, Takashi, Tomohito Asaka, and Keishi Iwashita. 2018. "Evaluation of Atmospheric Effects on Interferograms Using DEM Errors of Fixed Ground Points" Sensors 18, no. 7: 2336. https://doi.org/10.3390/s18072336
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