The Satellite Needs Working Group (SNWG) surveyed data-providing federal agencies to determine the highest priority user needs for Earth-observing satellite data products. The top priority needs identified were for measurements of surface water extent, surface disturbance, and surface displacement. NASA's Observational Products for End-Users from Remote Sensing Analysis (OPERA) project, located at the Jet Propulsion Laboratory (JPL), utilizes data from satellite radar and optical instruments to generate products to meet these needs.

OPERA Burst_Database

Sentinel-1 IW Single-Look Complex (SLC) product frames are comprised of three subswaths, each containing multiple bursts. Since the spatial coverage of a burst is the same for each satellite orbit, bursts with the same burst ID will line up precisely over the same geographic location.

The OPERA Burst Database is an SQLite file generated by the OPERA Algorithm Development Team (ADT), providing relevant information on all bursts acquired during the Sentinel-1 mission, including relative orbit number (path), corner coordinates, and the projection system of the geographical grid used to generate each Coregistered Single-Look Complex for Sentinel-1 (CSLC-S1) product. Each burst ID in the burst_DB follows the same convention adopted by ESA (European Space Agency) for generating its burst map.

Access the OPERA Burst_Database using the following links:

• OPERA ADT Burst DB GitHub repository
• Direct Amazon Web Services (AWS) S3 download (SQLite, 52.7 MB)
• ESA Sentinel-1 burst map (ZIP, 530.9 MB)

CSLC-S1 Product Calibration/Validation (CalVal) Database

A file containing the calibration/validation (CalVal) database for the OPERA CSLC-S1 product.

• Ancillary data products needed for validation, tables with CSLC-S1 product metadata (including links to the CSLC-S1 CalVal collections and static layers).
• Validation reports detailing the results of the validation process.
• A CalVal database reference document that details the contents of the database.

The database is designed to be read and used by the OPERA CSLC CalVal GitHub repository to reproduce the validation process and results. The database file can be downloaded from NASA's Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC).

• OPERA CSLC Calval Database (ZIP, 798.2 MB)

RTC-S1 Product Calibration/Validation (CalVal) Database

A file containing the calibration/validation (CalVal) database for the OPERA Radiometric Terrain Corrected (RTC)-S1 product.

• Ancillary data products needed for validation.
• Tables with RTC-S1 product metadata (including links to the RTC-S1 CalVal collections and static layers).
• Validation reports detailing the results of the validation process.
• A CalVal database reference document that details the contents of the database.

The database is designed to be read and used by the OPERA RTC CalVal GitHub repository to reproduce the validation process and results. The database file can be downloaded from NASA's Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC).

• OPERA RTC Calval Database (ZIP, 5.16 GB)

CSLC-S1 Visualization Guide

Illustrates how users can manipulate OPERA CSLC-S1 products in the open-source QGIS software.

• Visualizing the CSLC product (PDF, 9.3 MB)

Jupyter Notebook Tutorial - Earthquake Application

How to generate interferograms (without the need to download OPERA CSLC-S1 products locally). The example is based on the Ridgecrest earthquake in California, which occurred in July 2019.

• Ridgecrest Earthquake Tutorial (GitHub)

Jupyter Notebook Tutorial - Mosaicking and Visualizing RTC

How to mosaic and visualize OPERA RTC-S1 images.

• Mosaiking Tutorial (GitHub)