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PEGASEM GSS Series - Ground Speed Sensors

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The newly designed PEGASEM Radar Sensors allow carefree non-contact speed sensing over ground at a very competitive price. The road surface is scanned with a 24 GHz radar beam. The internal processor creates a high precision TTL- output signal with 100 pulses per metre from the raw Doppler signals. For high precision measurements, the GSS25C has automatic internal vehicle pitch compensation using a dual beam design while the GSS15C/GSS25C, with its single beam approach, is targeted for applications where vehicle pitching during acceleration and braking does not occur e.g. tramways, trains etc. High gain microwave antennas create a Doppler signal with excellent noise margin allowing measurements even in the ultra low speed range. The clean, high quality speed output signal outperforms many competitive non-contact vehicle speed sensors. Both models come in weatherproof housings with five meters of cable and a mounting solution for easy and quick fitting to the vehicle’s body.


  • Non-contact Measurement
  • 24GHz Radar Doppler Technology
  • Works on Plain and Rough Terrain
  • Excellent Price/Performance Ratio
  • Single or Dual Channel Versions
  • Direction Sensing
  • Vehicle Pitch Compensation (GSS25C)
  • Excellent Low-Noise Speed Signal
  • Low Signal Latency (<10ms)
  • Working Range from 0.1 - 300km/h
  • Compact and Lightweight
  • Robust
  • Fits within seconds
  • Pulse Output
  • Analogue Speed Output (GSS25C)
  • Serial RS232 Interface (GSS15C/GSS25C)


  • Overground Vehicle Speed Sensing
  • Precision vehicle speed information
  • Precision distance measurement
  • Brake Test
  • Acceleration Test
  • Fuel Consumption Test
  • Vehicle Sound Analysis
  • Interval Marking
  • Off-Road Test
  • Vehicle Homologation
  • Control of vehicle speed during crash tests
  • Slip test
  • Skid test
  • Refinement of ABS
  • Support of GPS based test equipment


GSS25C A Web


GSS15C Solo Web