VQ-840-G

Compact Topo-Hydrographic Airborne Laser Scanner with Online Waveform Processing and Full Waveform Recording

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

RIEGL | Innovation in 3D

Horn, AT

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Description

The RIEGL VQ-840-G is a fully integrated compact airborne laser scanner for combined hydrographic and topographic surveying. The system is offered with an integrated and factory-calibrated GNSS/IMU system and can be complemented with an optional camera and further options to acquire additional data for even more precise mission results. 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.

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Specifications

General: Year of introduction

2018

Year of last update

2022

Total Weight [kg]

15

Power requirements

18-34V DC, 110W

Type of GNSS/INS positioning system

optional

Camera

optional

Data storage facilities

CFAST, up to 512 GB

Postprocessing software

RiMTA ALS, RiACQUIRE, RiPROCESS, RiWORLD

Application: Main applications

Mapping of Coastal Lines; Coastline and Shallow Water Mapping; Surveying for Hydraulic Engineering; Hydro-Archaeological-Surveying

Measurement Characteristics: Scanning method

rotating scan mirror

Min. pulse frequency [Hz]

5000

Max. pulse frequency [Hz]

200000

Max. field of view [deg]

40

Max. number of recorded echoes per pulse

5

Full-wave form digitization

Y

Operation Characteristics: Platform

Helicopter, Fixed-wing, Gyroplane, RPAS (UAV/UAS)

Min. flying height [m]

3

Max. flying height [m]

250

Laser Pulse Characteristics: Type/class laser

3B

More information: Distinguishable features

designed for combined topographic and hydrographic airborne and UAV-based survey; high accuracy ranging based on echo digitization and online waveform processing with multiple-target capability; concurrent comprehensive full 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; additional, fully integrated infrared laser rangefinder (on request); integrated digital camera (optional); compact, lightweight and robust housing compliant with typical hatches in aircrafts and with stabilized platforms;