Software

Below is a list of publicly available software developed by our group.

alos2App

alos2App is an application that can process multi-mode SAR data acquired by the JAXA ALOS-2 satellite. The application is now part of the JPL/Caltech/Stanford ISCE software. Support for the ALOS-4 satellite is being developed. Major algorithms are described in Liang and Fielding, 2017a, IEEE TGRS and Liang and Fielding, 2017b, IEEE TGRS. Here is an example of a ScanSAR-stripmap interferogram processed by alos2App and featured in the journal Science.

alos2burstApp

alos2burstApp is an application for processing ALOS-2 ScanSAR data in a burst-by-burst manner. The application is now part of the ISCE software. The implemented algorithms can be found in Liang and Fielding, 2017, IEEE TGRS.

alosStack

alosStack is an application for processing an ALOS-2 InSAR stack. The application is part of the ISCE software. Support for the upcoming ALOS-4 satellite is being developed. It also makes use of the algorithms developed in Liang and Fielding, 2017a, IEEE TGRS and Liang and Fielding, 2017b, IEEE TGRS. The output of the application is supported by MintPy.

alos2App, alos2burstApp and alosStack, and their sample processing results.
alos2App, alos2burstApp and alosStack, and their sample processing results.
Sentinel-1 TOPS mode ionospheric correction software

The software performs ionospheric correction for C-band Sentinel-1 TOPS mode InSAR data. The software is now part of topsApp in the ISCE software. Its stack version has also been integrated into topsStack for the ionospheric correction of TOPS stacks. The detailed algorithms implemented are described in Liang et al., 2019, IEEE TGRS. While ionospheric effects at C-band were previously often not considered a significant issue or were even misinterpreted as orbit fringes, our recent studies have demonstrated that they can be very significant in some cases (Liang et al., 2019, IEEE TGRS).

Ionospheric correction of a stack of Sentinel-1 TOPS interferograms in northern Chile (Track A149).
Ionospheric correction of a stack of Sentinel-1 TOPS interferograms in northern Chile (Track A149).