Radar interferogram filtering for geophysical applications

作者：R. M. Goldstein, Charles Werner · 发表于：Geophysical Research Letters · 年份：1998 · DOI：10.1029/1998gl900033 · 被引用次数：2225 · 研究领域：Synthetic Aperture Radar (SAR) Applications and Techniques、Cryospheric studies and observations、Soil Moisture and Remote Sensing

The use of SAR interferometry is often impeded by decorrelation from thermal noise, temporal change, and baseline geometry. Power spectra of interferograms are typically the sum of a narrow‐band component combined with broad‐band noise. We describe a new adaptive filtering algorithm that dramatically lowers phase noise, improving both measurement accuracy and phase unwrapping, while demonstrating graceful degradation in regions of pure noise. The performance of the filter is demonstrated with SAR data from the ERS satellites over the Jakobshavns glacier of Greenland.