Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence Estimation
Abstract Interferometric synthetic aperture radar (InSAR) has been used to quantify a range of surface and near surface physical properties in permafrost landscapes. Most previous InSAR studies have utilized spaceborne InSAR platforms, but InSAR datasets over permafrost landscapes collected from air...
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doaj-c8387d153b1c415e8e73f24b8f86a4cd2021-07-27T22:20:33ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842021-07-0187n/an/a10.1029/2020EA001630Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence EstimationRoger J. Michaelides0Richard H. Chen1Yuhuan Zhao2Kevin Schaefer3Andrew D. Parsekian4Taylor Sullivan5Mahta Moghaddam6Howard A. Zebker7Lin Liu8Xingyu Xu9Jingyi Chen10Department of Geophysics Colorado School of Mines Golden CO USAJet Propulsion Laboratory California Institute of Technology Pasadena CA USAViterbi School of Engineering University of Southern California Los Angeles CA USANational Snow and Ice Data Center Cooperative Institute for Research in Environmental Sciences University of Colorado at Boulder Boulder CO USADepartment of Geology and Geophysics University of Wyoming Laramie WY USADepartment of Geology and Geophysics University of Wyoming Laramie WY USAViterbi School of Engineering University of Southern California Los Angeles CA USADepartment of Geophysics Stanford University Stanford CA USAEarth System Science Programme Faculty of Science The Chinese University of Hong Kong Hong Kong ChinaEarth System Science Programme Faculty of Science The Chinese University of Hong Kong Hong Kong ChinaDepartment of Aerospace Engineering and Engineering Mechanics University of Texas Austin TX USAAbstract Interferometric synthetic aperture radar (InSAR) has been used to quantify a range of surface and near surface physical properties in permafrost landscapes. Most previous InSAR studies have utilized spaceborne InSAR platforms, but InSAR datasets over permafrost landscapes collected from airborne platforms have been steadily growing in recent years. Most existing algorithms dedicated toward retrieval of permafrost physical properties were originally developed for spaceborne InSAR platforms. In this study, which is the first in a two part series, we introduce a series of calibration techniques developed to apply a novel joint retrieval algorithm for permafrost active layer thickness retrieval to an airborne InSAR dataset acquired in 2017 by NASA's Uninhabited Aerial Vehicle Synthetic Aperture Radar over Alaska and Western Canada. We demonstrate how InSAR measurement uncertainties are mitigated by these calibration methods and quantify remaining measurement uncertainties with a novel method of modeling interferometric phase uncertainty using a Gaussian mixture model. Finally, we discuss the impact of native SAR resolution on InSAR measurements, the limitation of using few interferograms per retrieval, and the implications of our findings for cross‐comparison of airborne and spaceborne InSAR datasets acquired over Arctic regions underlain by permafrost.https://doi.org/10.1029/2020EA001630InSARUAVSARsynthetic aperture radarpermafrostactive layer thicknessArctic and boreal |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Roger J. Michaelides Richard H. Chen Yuhuan Zhao Kevin Schaefer Andrew D. Parsekian Taylor Sullivan Mahta Moghaddam Howard A. Zebker Lin Liu Xingyu Xu Jingyi Chen |
spellingShingle |
Roger J. Michaelides Richard H. Chen Yuhuan Zhao Kevin Schaefer Andrew D. Parsekian Taylor Sullivan Mahta Moghaddam Howard A. Zebker Lin Liu Xingyu Xu Jingyi Chen Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence Estimation Earth and Space Science InSAR UAVSAR synthetic aperture radar permafrost active layer thickness Arctic and boreal |
author_facet |
Roger J. Michaelides Richard H. Chen Yuhuan Zhao Kevin Schaefer Andrew D. Parsekian Taylor Sullivan Mahta Moghaddam Howard A. Zebker Lin Liu Xingyu Xu Jingyi Chen |
author_sort |
Roger J. Michaelides |
title |
Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence Estimation |
title_short |
Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence Estimation |
title_full |
Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence Estimation |
title_fullStr |
Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence Estimation |
title_full_unstemmed |
Permafrost Dynamics Observatory—Part I: Postprocessing and Calibration Methods of UAVSAR L‐Band InSAR Data for Seasonal Subsidence Estimation |
title_sort |
permafrost dynamics observatory—part i: postprocessing and calibration methods of uavsar l‐band insar data for seasonal subsidence estimation |
publisher |
American Geophysical Union (AGU) |
series |
Earth and Space Science |
issn |
2333-5084 |
publishDate |
2021-07-01 |
description |
Abstract Interferometric synthetic aperture radar (InSAR) has been used to quantify a range of surface and near surface physical properties in permafrost landscapes. Most previous InSAR studies have utilized spaceborne InSAR platforms, but InSAR datasets over permafrost landscapes collected from airborne platforms have been steadily growing in recent years. Most existing algorithms dedicated toward retrieval of permafrost physical properties were originally developed for spaceborne InSAR platforms. In this study, which is the first in a two part series, we introduce a series of calibration techniques developed to apply a novel joint retrieval algorithm for permafrost active layer thickness retrieval to an airborne InSAR dataset acquired in 2017 by NASA's Uninhabited Aerial Vehicle Synthetic Aperture Radar over Alaska and Western Canada. We demonstrate how InSAR measurement uncertainties are mitigated by these calibration methods and quantify remaining measurement uncertainties with a novel method of modeling interferometric phase uncertainty using a Gaussian mixture model. Finally, we discuss the impact of native SAR resolution on InSAR measurements, the limitation of using few interferograms per retrieval, and the implications of our findings for cross‐comparison of airborne and spaceborne InSAR datasets acquired over Arctic regions underlain by permafrost. |
topic |
InSAR UAVSAR synthetic aperture radar permafrost active layer thickness Arctic and boreal |
url |
https://doi.org/10.1029/2020EA001630 |
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