Interferometric synthetic aperture radar atmospheric correction: Medium Resolution Imaging Spectrometer and Advanced Synthetic Aperture Radar integration
Abstract
Atmospheric water vapor effects represent one of the major limitations of repeat-pass InSAR, and limit the accuracy of deformation rates derived from InSAR. The use of contemporaneous MERIS data to correct ENVISAT ASAR measurements shows a significant reduction in water vapor effects. After correction, the RMS differences between GPS and InSAR range changes in the satellite line of sight direction decreased to 0.55 cm with a reduction of up to 0.35 cm. It is also shown that it is possible to implement an extra `conservative' cloud mask and obtain better water vapor corrections than that from using the official ESA cloud mask product.
- Publication:
-
Geophysical Research Letters
- Pub Date:
- March 2006
- DOI:
- 10.1029/2005GL025299
- Bibcode:
- 2006GeoRL..33.6816L
- Keywords:
-
- Geodesy and Gravity: Space geodetic surveys;
- Geodesy and Gravity: Instruments and techniques;
- Geodesy and Gravity: Integrations of techniques;
- Radio Science: Interferometry (1207;
- 1209;
- 1242);
- Radio Science: Radio wave propagation