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The RIEGL VQ-840-G is a fully integrated compact airborne laser scanner for combined bathymetric and topographic surveying. The system is offered with an optionally integrated and factory-calibrated IMU/GNSS system and can be complemented with an optional camera or IR rangefinder. The VQ-840-G is a compact and lightweight LiDAR system to be installed on various platforms including UAVs.

The scanner carries out laser range measurements for high resolution surveying of underwater topography with a narrow, visible green laser beam, emitted from a pulsed laser source. Subject to clarity, at this particular wavelength the laser beam penetrates water enabling measurement of submerged targets.

Main Features
  • designed for combined topographic and bathymetric airborne and UAV-based survey
  • high accuracy ranging based on echo digitization and online waveform processing with multiple-target capability
  • concurrent comprehensive full waveform storage for all measurements for subsequent full waveform analysis
  • high spatial resolution due to measurement rate of up to 200 kHz and high scanning speed of up to 100 scans/sec
  • integrated inertial navigation system (optional)
  • additional, fully integrated infrared laser rangefinder or integrated digital camera (optional)
  • compact, lightweight and robust housing compliant with typical hatches in aircrafts and with stabilized platforms
Main Applications
  • Mapping of Coastal Lines
  • Coastline and Shallow Water Mapping
  • Surveying for Hydraulic Engineering
  • Hydro-Archaeological-Surveying
  • River Surveying
  • Repeated Survey of Water Reservoirs


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