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GSG Series GPS/GNSS Simulators

Spectracom GSG Series GPS/GNSS Simulators

GPS Simulators Overview

Our GPS/GNSS satellite simulators are easy to use, scenario-based instruments that combine a powerful, feature-rich platform with industry-leading value and affordability for any requirement for GPS testing.

Spectracom GSG series simulators generate the same RF signals that are broadcast by navigation satellites to test any device or system with a GPS receiver. Several different configurations are available but all are upgradeable to add capability as your needs for GPS testing grows.

GSG Series Simulator Benefits

  • Powerful and accurate
  • Lowest cost-of-ownership
  • Easy-to-configure
  • Easy-to-operate
  • Easy-to-connect
  • Lightweight and portable


  • All constellations available: GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS
  • 1-64 channels (used for satellites, interference, multipath); sync multiple units for more
  • Multi-frequency: L1, L2, L2C, L5, E1, E5, B1, B2; coming soon: E6, B3
  • Variable output: -65 to -160 dBm
  • High accuracy timing

See our application packages for specific test requirements, then tell us what else you need

Easy scenario-based testing

  • Test any condition with built-in or user-defined scenarios
  • Define trajectories: Via Google, in real-time from a data stream, from recorded  data, and more
  • GSG StudioView Windows software makes creating, editing and managing scenarios simple
  • Test various impairments to the GPS signal including multi-path, interference, jamming, spoofing, atmospheric effects and more

Unprecedented convenience

  • Easy to set-up and operate
  • Compact and lightweight (~ 3 Kg / 6 lbs)
  • Standalone (front panel) operation or remote control via USB, Ethernet, GPIB
  • Just connect the RF cable to your receiver or set-up an over-the-air test with a radiating antenna in an RF shielded environment 

Lowest cost-of-ownership

  • The standard for performance/price
  • Modular hardware/software platform protects your investment
  • Purchase only the features you need, upgrade when necessary; future GNSS signals fully supported

  • GSG-51 GNSS

  • GSG-5 Series Advanced GNSS

  • GSG-6 Advanced GNSS

  • GSG StudioView Software

Spectracom GSG-51 Single Channel GNSS

Single-channel GPS/GNSS L1 RF Generator

The GSG-51 is a GNSS signal generator that emulates a single satellite signal. The main application is a simple but very fast manufacturing test, to assure that the assembly is correct, that the antenna is properly connected, and that the receiver can receive and identify a satellite signal. It provides a fast and cost-effective solution for production test of GNSS-receivers in e.g. mobile phones with integrated GNSS-receivers. Thanks to the wide RF level range from –65 to –160 dBm, the sensitivity of all types of GNSS receivers can be verified with a minimum of delay. The 60 dB of extra power from normal test scenarios allows from splitting the signal many times.

Easy to Use

GSG-51 users can configure settings without the need for an external PC and pre-compilation phase. Via the front panel, the user can swiftly modify parameters such as satellite ID, time and power output. The front panel can be locked out to prevent accidental power down or configuration changes. Once initiated the unit can simulate for 31 days continuously (or indefinitely if the unit is connected to the internet).


As the base model of the popular 5 Series GNSS Simulator family, this affordable unit can be upgraded at any time after purchase to increase the channel count, add receiver trajector