TOPAS

GOOSE©

GNSS RECEIVER WITH OPEN SOFTWARE INTERFACE
GPS | Galileo | GLONASS | BeiDou | SBAS

The GOOSE platform is an FPGA based GNSS receiver. It is therefore flexible in processing new or proprietary signals.
It comprises 60 hardware channels in real time and provides an open software interface for customer applications.
GOOSE grants deep access to the hardware interface, down to e.g. integrate and dump value levels. Additionally, the intermediate frequency signals can be recorded, processed and replayed with the platform.

GOOSE is meant as a rapid prototyping solution for the development of state of the art GNSS receivers.
The platform is dedicated to software developers, mobile communication operators, and system developers. Four separate components characterize the platform: a multi-frequency GNSS antenna, an analogue-frontend board, a baseband board, and the processor system.

Main benefits

  • Flexible development platform with multi-system and multi-signal real-time processing

Digital recording of intermediate frequency (IF) signals for SDR algorithm evaluation (post-processing)
optional: integrated antenna receiver combination (smart antenna)
Analytic preprocessing of recorded IF-signals for replay:
– Insertion of Jamming and Spoofing
– Mitigation of Jamming by Notch-Filter or Pulse-Blanker
Digital Replay of IF-signals for easy and real-time repeatable tests
Guaranteed stable phase center for all GNSS frequencies
Deployment in commercial PC or as an embedded platform
Allows deep coupling and vector tracking in real time
Extendable for meta signals
Access to correlation values

Features

    • 60 hardware channels
    • Up to 25 Hz raw data output (code, carrier, navigation data)
    • Supported signals:
      • GPS (L1C/A, L2C, L5)
      • Galileo (E1BC, E5a/E5b, E5AltBOC)
      • Optional SBAS (EGNOS)
      • GLONASS (G1, G2)
      • BeiDou (B1, B2) ready
    • Open GNSS Receiver Protocol (OGRP®), fully documented with parsing tool using CONVBIN from RTKLIB as RINEX converter
    • C++-API to access the tracking I&D values and to close the tracking loops
    • Logging of tracking I&D values
    • 10 MHz reference input
    • 10 MHz reference output
    • PPS output (1 Hz – max. 25 Hz)
    • 1 Ethernet port
    • 2 full speed USB ports
    • Digital recording and playback of front-end IF samples in real time

Performance

  • 1 PPS out: resolution 12 ns
  • 1 PPS out rise time: ~ 3 ns
  • Cold / warm start: depending on customers software implementation (without startup time of SBC)
  • Re-acquisition: 1 – 2 s until satellite is re-used in position solution
  • Tracking: down to 30 dbHz
  • Acquisition: from 35 dbHz

Technical Details

  • Dimensions housing (H x D): 20 x 17 cm
  • Dimensions electronic cube including antenna (H x W x D): 7 x 10 x 10 cm
  • Weight electronic cube (incl. antenna): 350 g
    Weight electronic cube only: 220 g
  • Power: Input voltage: 6 – 36 V
  • Power consumption: ~ 13 W
  • Antenna LNA power output: output voltage 3.3 V, maximum current 100 mA
  • Connectors:
    • Antenna: SMA
    • REF IN / REF OUT : SMA
    • PPS OUT: Pin header
    • Power: 3.5’’
    • COM1 / COM2: Pin header
    • 2x USB 2.0: Type A
    • Ethernet RJ45

 

For further information, please send an e-mail to: info@teleorbit.eu

 

1 GOOSE was developed from 2014 to 2015 and is hardened for rail applications in the GalileoOnline project from 2015 to 2018. Both supported by the German Federal Ministry for Economic Affairs and Energy.

Technology licensed by Fraunhofer IIS

Images ©Fraunhofer IIS