HyP3 GAMMA

HyP3 plugin for SAR processing with GAMMA

Developer Setup

Ubuntu 20.04 is recommended for GAMMA support.

1. Install GAMMA
2. Install conda
3. Install hyp3_gamma

   git clone [email protected]:ASFHyP3/hyp3-gamma.git
   cd hyp3-gamma
   conda env create -f environment.yml
   conda activate hyp3-gamma
   

4. Check hyp3_gamma is installed

   hyp3_gamma --help
   

Radiometric Terrain Correction (RTC)

SAR datasets inherently contain geometric and radiometric distortions due to terrain being imaged by a side-looking instrument. Radiometric terrain correction (RTC) removes these distortions and creates analysis-ready data suitable for use in GIS applications. RTC processing is a required first step for many amplitude-based SAR applications.

To run the RTC science process:

rtc_sentinel.py --help
rtc_sentinel.py S1A_IW_SLC__1SSV_20150621T120220_20150621T120232_006471_008934_72D8.SAFE

To run the RTC process through the HyP3 interface:

hyp3_gamma ++process rtc --help
hyp3_gamma ++process rtc --username ${EDL_USERNAME} --password ${EDL_PASSWORD} \
    S1A_IW_SLC__1SSV_20150621T120220_20150621T120232_006471_008934_72D8

Interferometric Synthetic Aperture Radar (InSAR)

Interferometric SAR (InSAR) uses the phase differences from repeat passes over the same area to identify regions where the distance between the sensor and the Earth's surface has changed. This allows for the detection and quantification of deformation or movement.

To run the InSAR science process:

ifm_sentinel.py --help
ifm_sentinel.py \
    S1A_IW_SLC__1SDV_20200203T172103_20200203T172122_031091_03929B_3048.SAFE \
    S1A_IW_SLC__1SDV_20200110T172104_20200110T172123_030741_03864E_A996.SAFE

To run the InSAR process through the HyP3 interface:

hyp3_gamma ++process insar --help
hyp3_gamma ++process insar --username ${EDL_USERNAME} --password ${EDL_PASSWORD} \
    S1A_IW_SLC__1SDV_20200203T172103_20200203T172122_031091_03929B_3048 \
    S1A_IW_SLC__1SDV_20200110T172104_20200110T172123_030741_03864E_A996

Example product metadata

The hyp3_gamma.metadata subpackage can generate an example set of product metadata for each of the supported product types. E.g.:

python -m hyp3_gamma.metadata rtc
python -m hyp3_gamma.metadata insar

For detailed usage, see the metadata README.