Multi-GNSS simulation is the emulation, in the laboratory, of the environment under which a GNSS receiver operates. A Spirent Multi-GNSS simulator reproduces the environment of a GNSS receiver on a dynamic platform by modelling vehicle and satellite motion, signal characteristics, atmospheric and other effects, causing the Multi-GNSS receiver to actually navigate according to the parameters of the test scenario.

GNSS, Global Navigation Satellite System(s), is a general term for satellite constellation(s) that provides navigation and other services to users worldwide. Examples of GNSS in operation or being developed include GPS (USA), GLONASS (Russia), Galileo (EU) and BeiDou (PR China). A GNSS receiver will process these simulated signals in exactly the same way as it would those from actual GNSS satellites.

WHAT IS A MULTI-GNSS SIMULATOR?

A Multi-GNSS simulator provides an effective and efficient means to test GNSS receivers and the systems that rely on them. With a Multi-GNSS simulator, every time a test scenario is run, the signals produced are identical. The scenario will start at the same time on the same date, and the satellite positions will be identical—even down to the relative phase offsets between the different signals. In this way you can guarantee that the receiver is being stimulated with the exact same signals every time the test is run. Only this way can you fully determine any improvement (or otherwise) the design alterations have made.

MULTI-GNSS SIMULATION SOLUTIONS

• Multi-GNSS simulators from Spirent provide a superior alternative for testing compared to using actual GPS/GNSS signals in a live environment (live sky)
• Multi-GNSS simulation provides control and repeatability over the generated signals all within the confines of the lab and far ahead of final system deployment, helping to reduce project timescales and costs
• Multi-GNSS simulation enables signals to be emulated before they exist in space, something not possible by using a live sky environment
• Multi-GNSS simulation solutions from Spirent range from basic single-channel simulators, suitable for simple GPS/GNSS production testing, through multi channel, multi constellation simulators, suitable for the most demanding research and engineering applications

MULTI-GNSS TESTING

• The GSS8000 Multi-GNSS Constellation Simulator provides GPS/SBAS, GLONASS, BeiDou-2 and Galileo signals. GPS configurations can also support QZSS and SBAS. Classified signals and various options are also available.
• The GSS6700 Multi-GNSS Simulation System offers multiple channels of GPS/SBAS, GLONASS, Galileo L1 and BeiDou-2 signals.
• The GSS6300 Multi-GNSS Signal Generator provides a single channel of GPS/SBAS, GLONASS and/or BeiDou-2 and/or Galileo L1 signals for production testing of commercial GNSS receivers.