GMMR GBAS Multi Mode Receiver (IGM)


For both advance and then post GRAS/GRAS ground installation, ongoing GNSS signal propagation and performance monitoring are essential for successful VHF station commissioning. The GMMR is designed as a highly reliable, adaptable low cost monitoring solution, (Airborne and/or Ground), for continuous reception and then implementation of VHF GRAS/GBAS signal trans missions . The GMMR delivers an extensive variety of processed DGPS navigation messages and other statistical outputs, while retaining high adaptability for interfacing to external bulk data storage and/or communication devices, (HDD and UDP internet transfers, etc).

The GMMR system consists of NovAtel OEM6 Receiver loaded with specialised internal firmware (API) configured to directly control a Telerad RE-9009A D8PSK VHF Receiver while also differentially processing in real time the incoming ICAO DO-246C messages, (GBAS Type 1,2,4 and GRAS Type 101) for any defined D8PSK slot.

Main features comprising the GMMR are:

  • Low cost and easy to deploy hardware solution that can be made operational within minutes of on-site arrival.
  • Real-time PC software for output performance monitoring and operator pre-mission system configuring.
  • GRAS/GBAS message compliance benchmarked against Spirent GG7700 & GSS4150 simulation system.
  • Rover platform GPS data source for aircraft flight/ trajectory post processing, (sub decimetre accuracies).

Main hardware items comprising the GVT Emulator are:

  • Telerad RE-9009A – D8PSK VHF Receiver
  • NovAtel Propak-V3 Receiver & ANT534 Ant – Precision GPS with internal API programming capability
  • Aircraft VHF Antenna – Aviation 120MHz VHF Reception Antenna linearly or elliptically polarised

For more specific information concerning GMMR and it’s future potential for your project please contact the engineering team.

Please watch this space for future material to be progressively added.