Multi-mode SAR Interferometry Processing Research and Implementation

Multi-mode SAR Interferometry Processing Research and Implementation

Current operation mode of SAR can be roughly divided into two types: strip-map mode and burst mode. The most conventional mode is strip-map mode, in which the swath width is quite limited. The other type is burst mode, which is an active option to overcome this limitation by cyclically scanning several subswaths, known as ScanSAR. In addition, Envisat ASAR has another type of burst mode, that i...

Joint Multi-baseline SAR Interferometry

We propose a technique to provide interferometry by combining multiple images of the same area. This technique differs from the multi-baseline approach in literature as (a) it exploits all the images simultaneously, (b) it performs a spectral shift preprocessing to remove most of the decorrelation, and (c) it exploits distributed targets. The technique is mainly intended for DEM generation at c...

Sar Interferometry: Principles, Processing, and Perspectives

The principles of SAR interferometry and interferogram generation, in particular phase unwrapping and geocoding, are described. Current issues of SAR interferometry are discussed: atmospheric effects on spaceborne repeat-pass interferometry limiting the accuracy and reliability of Digital Elevation Models (DEM), the Shuttle Radar Topography Mission (SRTM) resulting in a globally homogeneous DEM...

Maximum Likelihood Multi-Baseline SAR Interferometry

We propose a technique to provide interferometry by combining multiple images of the same area. This technique exploits all the images jointly and performs an optimal spectral shift pre-processing to remove most of the decorrelation for distributed targets. It’s applications are mainly for DEM generation at centimetric accuracy, and for differential interferometry. The major requirement is that...

InSAR Principles: Guidelines for SAR Interferometry Processing and Interpretation