• Versatile 16-channel GPS signal generator with pre-configured test scenarios
• SBAS (WAAS, EGNOS) simulation
• Configurable multipath simulation
• White noise generator for receiver SNR testing
• Easy-to-use and intuitive
• Fully operational via front-panel
• Multiple interfaces for remote control
• Affordable and powerful GPS Simulator

Easy to Use
The GSG-55 user can configure scenarios on-the-fly without the need for external PC and pre-compilation phase. Via the front panel the user can swiftly modify parameters such as user position, time and specify output powers in carrier to noise ratio instead of absolute output power. Utilizing the white noise generation extends the usability and flexibility.

Flexibility
12-channel GPS receivers are popular in GPS applications today, the GSG-55 16-channel simulator makes it possible to simulate all the channels those receivers can track. In addition other channels can be used for SBAS simulation of EGNOS or WAAS satellites.

GSG-55 is shipped with several multipath scenarios where the receivers’ response to an increased multipath environment can be analyzed. It also has a set of trajectories (static, circles, rectangular according to 3GPP TS 25.171) that allows the user to upload their own trajectories in NMEA standard format. The user can upload their own ephemeris data in standard RINEX format or re-use the default data for any time periods. GSG-55 can even automatically download historical RINEX, WAAS and EGNOS data from official ftp sites, as needed. GSG-55 has USB, GPIB as well as Ethernet interface, allowing remote control via network connection.

Suitable for Testing Timing Receivers
Besides the variety of built-in navigation/positioning tests, the GSG-55 is also suited for accurate testing of timing GPS-receivers. The GSG-55 can be equipped with an ultra-high-stability OCXO timebase for precision timing of the satellite data, or use external synchronization from a 10 MHz reference from e.g. a Cesium or Rubidium clock. A built-in 1-pps output, synchronized to the generated satellite data, allows comparison with the 1-pps signal from the timing receiver under test.

The Affordable Test Solution
The GSG-55 is a perfect fit for a wide-variety of test cases including:

• Test of simulated movements (user trajectories).
• Test of receivers’ sensitivity to loss of satellites, multi-path, leap seconds and atmospheric conditions.
• Fast production test of connectivity and sensitivity (conducted or over-the-air).
• Production test of positioning receivers' accuracy.
• Test of timing receiver accuracy.
• Test of receivers’ dynamic range.
• Test of receivers' susceptibility for noise (SNR limit testing).

Datasheets

GSG-55 16-channel simulator datasheet

GSG Series Comparison Chart

Manuals

Operating Manual

Programmer's Handbook

Technical Notes

Considerations for Radiating GPS Signals

Application Notes

GPS Receiver Leap Second Testing

System Diagrams

Multiple GPS Receiver Testing