Satellite constellations accurately simulated, with interferers, for GNSS test
The SMW200A can be extended to up to four RF outputs and allows GNSS signals to be simulated simultaneously in multiple frequency bands for multiple antennas. R&S positions it as the only instrument that can internally simulate a complex interference environment in parallel with GNSS signals.
An increasing number of GNSS receivers, R&S notes, are able to process signals from diverse navigation systems such as GPS, Glonass, Galileo or BeiDou in several frequency bands – and in some cases with several antennas in parallel – in order to improve positioning accuracy. Accuracy can be further improved with differential GNSS (DGNSS) techniques. These techniques are used in applications such as autonomous driving, and they are indispensable for precise and reliable positioning of aircraft during landing approaches.
The SMW200A GNSS simulator offers a means of generation of complex and highly realistic test scenarios for a wide variety of GNSS applications. To test multifrequency and multi-antenna systems, users now have access to 72 GNSS channels that can be assigned to up to four RF outputs. The R&S SMW200A can generate QZSS and SBAS signals as well as GPS, Glonass, Galileo and BeiDou signals. Users can verify the position accuracy of their receivers under realistic conditions.
The unit has an internal noise generator and can generate complex interference scenarios with multiple interferers. All signals (GNSS, noise and interference) are generated directly in the instrument. Additional signal sources for external generation of interference signals are not necessary, considerably simplifying test setups. Similarly, no external computer is needed to configure and operate the R&S SMW200A. An integrated, intuitive GUI allows users to generate GNSS scenarios quickly and easily.
Rohde & Schwarz; www.rohde-schwarz.com/ad/press/gnss-solutions
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