osqzss/gps-sdr-sim

Health v2 · maintenance only

Flags: no_releases archived

Adoption not part of the score

3461 stars · 977 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A C-based software-defined GPS signal simulator that generates GPS baseband I/Q sample streams from user-defined trajectories and broadcast ephemeris data. The output can be transmitted as RF signals via SDR platforms such as HackRF, bladeRF, USRP, and ADALM-Pluto.

Use cases

• simulate GPS signals for testing GNSS receivers
• generate GPS RF signals from a custom trajectory
• spoof GPS signals with an SDR like HackRF
• test GPS receiver behavior with synthetic satellite signals
• replay GPS signals for hardware-in-the-loop testing
• create GPS baseband data from NMEA or ECEF motion files

When to choose

• you need to generate realistic GPS L1 signals for receiver testing
• you own a supported SDR (HackRF, bladeRF, USRP, ADALM-Pluto) and want to transmit GPS signals
• you need reproducible GPS signal scenarios from ephemeris and motion data

When to avoid

• you need real-time GPS signal generation rather than pre-generated sample files
• you need other GNSS constellations like Galileo or BeiDou
• you want a GUI-based simulator rather than a command-line tool

Facets

cli-tool · maturity active

simulation cli hardware security embedded-systems windows cli cpp gps gnss sdr signal-simulator hackrf bladerf usrp adalm-pluto rf signal-processing linux macos

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markdown · JSON · MCP: product_card(name="osqzss/gps-sdr-sim")