Tactical Observation of RF GNSS Interference
Collect, store, and display observations and analysis of GPS "fix" availability and quality.
Android 7.0 or higher required; 8.0 recommended. Google Pixel 2 (or Pixel 2 XL) provides Automatic Gain Control data.
Observation points and associated location fix data are stored as a feature layer within a standard (v1.2) GeoPackage. The Data Model diagram below shows Satellite measurement data and receiver (hardware) clock information tables and their relationships, as currently implemented in the TORGI app.
The Related Tables Extension is a community standard extension to the GeoPackage map database, moving toward full adoption by OGC (Open Geospatial Consortium).
Open Architecture / Open Standards
GeoPackage / SQLite Database ERD
Android .apk will be build inside the Docker container: (
See Dockerfile for build process. Requires Android build tools and NGA GeoPackage Android SDK.
Travis CI - automated continuous integration: https://travis-ci.org/sofwerx/TORGI
SOFWERX was created under a Partnership Intermediary Agreement between Doolittle Institute and U.S. Special Operations Command in Tampa, Florida. We are a platform designed and operated to help solve challenging warfighter problems through increased collaboration and innovation. Our charter is twofold, to maintain a platform to accelerate delivery of innovative capabilities to USSOCOM, and to facilitate capability refinement through exploration, experimentation, and assessment of promising technology.