• Versatile 16-channel GNSS signal generator with pre-configured test scenarios
• Operates with StudioView™ for easy trajectory creation via Google Maps
• SBAS simulation: WAAS (N. America), EGNOS (Europe), GAGAN (India), MSAS (Japan)
• Configurable multipath simulation
• White noise generator for SNR testing
• Fully operational via front-panel, web-based remote control, or SCPI protocol
• Multiple interfaces for remote control: Ethernet, USB, GPIB
• Affordable, powerful, and easy-to-use

Easy to Use
The GSG-56 user can confi gure scenarios on-the-fly without the need for an 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. And using the optional StudioView™ software facilitates easily created scenarios via a Google Maps interface.

Flexibility
The GSG-56 16-channel simulator makes it possible to simulate all the visible  satellites for the receiver under test. In addition, other channels can be used for SBAS simulation of EGNOS, WAAS, GAGAN, or MSAS satellites, or for simulating multipath. If more channels are required, simply synchronize two or more units via the external 1PPS sync signal to generate 32, 48,..., channel simulation. Some restrictions apply.

GSG-56 is shipped with several multipath scenarios where the receivers’ response to an increased multipath environment can be analyzed. It also has a set of built-in trajectories (static, configurable circle, and rectangular as defi ned in 3GPP TS 25.171) or the user can 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-56 can even automatically download historical RINEX, WAAS and EGNOS data from official websites, as needed.

Connectivity Extends Ease of Use and Flexibility
The GSG-56 can be controlled via an Ethernet network connection, USB or GPIB. A built-in web interface allows complete operation of the instrument through front panel controls. With the optional GSG StudioView™ PC Software, you can build, edit, and manage the most complex scenarios, including building trajectories via Google Maps, independent of the GSG-56, for later upload.

Suitable for Testing Timing Receivers
Besides the variety of built-in navigation/positioning tests, the GSG-56 is also suited for accurate testing of timing GPS-receivers. The GSG-56 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-56 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 sensitivity and positioning receivers’ accuracy (conducted or over-the-air).
• Test of timing receiver accuracy.
• Test of receivers’ dynamic range.
• Test of receivers’ susceptibility for noise (SNR limit testing).
• Test of leap second transition.

Datasheets

GSG-56 GLONASS+GPS 16-channel simulator datasheet

GSG Series Comparison Chart

Technical Notes

Considerations for Radiating GPS Signals

Application Notes

GPS Receiver Leap Second Testing

System Diagrams

Multiple GPS Receiver Testing