Open SEPPO Tools — Supporting Geospatial and Remote Sensing Data Processing
openSEPPO provides open-source tools for processing and managing geospatial and SAR remote sensing data, with a focus on NASA NISAR products. The tools are designed to scale readily with the SEPPO software by Earth Big Data.
| Command | Description |
|---|---|
seppo_nisar_rslc_convert |
Subset NISAR L-band RSLC HDF5 files directly from S3/HTTPS; output is compatible with isce3, GAMMA Remote Sensing, and SEPPO for interferometric processing; geographic bbox, pixel, and coordinate subsetting; quicklook generation |
seppo_nisar_gcov_convert |
Convert NISAR GCOV HDF5 to Cloud Optimized GeoTIFF (COG), BigTIFF, or HDF5 subset with optional sigma0 conversion, reprojection, downscaling, and VRT time-series stacking |
seppo_nisar_gcov_convert_S |
S-band variant of seppo_nisar_gcov_convert (Beta release) |
seppo_nisar_gslc_convert |
Convert NISAR GSLC HDF5 complex data to COG or HDF5 subset: power, amplitude, magnitude, wrapped phase, or raw complex SLC (-cslc); supports subsetting, reprojection, downscaling, and VRT stacking |
seppo_nisar_gunw_convert |
Convert NISAR GUNW (geocoded unwrapped interferogram, L2 InSAR pair) HDF5 to COG, BigTIFF, or a self-contained HDF5 subset; unwrapped and wrapped interferogram and pixel-offset grids, with subsetting, reprojection, downscaling and time-series stacks |
seppo_nisar_sme2_convert |
Convert NISAR SME2 (soil moisture, L3) HDF5 to COG, BigTIFF, or a self-contained HDF5 subset on the native EASE-Grid 2.0; soil moisture, algorithm candidates, ancillary and radar layers, with subsetting, reprojection, and downscaling |
seppo_nisar_coherence |
Compute pairwise interferometric coherence from co-registered NISAR GSLC complex SLC files with optional crop, downscale, and reprojection |
seppo_nisar_search |
Search NISAR product URLs via NASA Earthdata CMR |
seppo_earthaccess_credentials |
Manage NASA Earthdata S3 credentials and bearer token |
See the Installation guide for full instructions including conda environment setup, pip install, and NASA Earthdata credential configuration.
Quick start:
mamba create -n openseppo -c conda-forge openseppo aria2 matplotlib
conda activate openseppoFull documentation with quick start, examples, and CLI reference is available in two places:
- In this repository: doc/index.md — includes TL;DR, copy-pasteable examples for GCOV, GSLC, and RSLC
- Read the Docs: openseppo.readthedocs.io
| Document | Description |
|---|---|
| Installation | Installation via conda, pip, and local clone |
| Hawaii Volcanoes examples | End-to-end RSLC, GSLC, GCOV search + inspect + subset examples (Kilauea) |
| Python API / Jupyter Integration | Use openSEPPO as a Python API in scripts and Jupyter notebooks |
| GCOV examples | Full usage examples for seppo_nisar_gcov_convert |
| RSLC CLI reference | CLI reference and examples for RSLC subsetting |
| GSLC CLI reference | CLI reference for GSLC conversion |
| GCOV CLI reference | CLI reference for GCOV conversion |
| GUNW CLI reference | CLI reference for GUNW interferogram conversion |
| GUNW examples | Search-to-interferogram and interferogram-stack example over the 2026 Venezuela earthquakes |
| SME2 CLI reference | CLI reference for SME2 soil moisture conversion |
| SME2 examples | Search-to-COG soil moisture example over South Dakota irrigation |
| Dual-pol ratio | Dual-pol ratio output details and formulas |
Apache License 2.0 — see LICENSE.
(c) 2026 Earth Big Data LLC | https://earthbigdata.com