SUCCESS STORY

UAV-basedBathymetry
Direct Georeferencing
ASTRALiTe’s edge™, the world’s first small-scale topographic and bathymetric scanning LiDAR, embeds a Quantainertial navigation system for direct georeferencing.

WORLD’S FIRST SMALL-SCALETOPO & BATHY LIDARASTRALiTe’s edge™ is the world’s
first small-scale topographic andbathymetric scanning LiDAR thatcan detect small underwater objects,
measure shallow water depth,and survey critical underwater
infrastructure from a small UAVplatform.

CLIENT

ASTRALiTeAPPLICATION

UAV-based Bathymetry andTopography
PRODUCT

Quanta Direct Geo-referencing
Solution
PROJECTThe edge™ can see beneath the water
surface at depths from 0-5 meters,
and is completely self-containedwith its own INS/GNSS, battery, andonboard computer. It weighs about
5 kg and is designed for deployment

on UAV systems for faster, safer, andmore accurate bathymetric surveys.

SBG DIRECT GEO-REFERENCING
SOLUTION“We needed a motion andnavigation solution for our LiDAR.
Our requirements included highaccuracy along with low size,weight, and power” explains Andy
Gisler, Director of Lidar Systemswith ASTRALiTe. In addition, thesystem needed to be able to apply
a PPK correction to the LiDAR data
to provide higher accuracy results toASTRALiTe’s customers.

“We needed a motion and navigation solution for our LiDAR.
Our requirements included high accuracy along with low size,weight, and power.”

LiDAR data geo-referencing
Andy Gisler, Director of Lidar Systems with ASTRALiTe

ASTRALiTe’s edge provides high-definition measurements
both above and below the water surface and accurately
measures the transition from land to water. Additionally,the equipment provides simultaneous water and bottom
surface detection at sub-centimeter accuracy and precisionfrom shore through shallow waters — an industry first.
More on ASTRALITe: https://www.astralite.net/edgelidar

QUANTA, THE DIRECT GEO-REFERENCING INS/GNSS
The company chose the new georeferencing solution fromSBG Systems named Quanta. This Inertial Navigation
Systems (INS) is specially designed to be integrated into
mobile mapping systems. “The weight of the INS solution
was especially important to us,” adds Andy. ASTRALiTe’ssystem is to be flown on most UAVs, where light payloadcapacities are required for UAV compatibility. The abilityto use two GPS antennas was key in our choice as we
required good heading knowledge at slow flight speeds.

Quanta directly and precisely geotags the point cloud inreal-time and provides even higher performance in postprocessing. One year of post-processing with the SBG
in-house PPK software called Qinertia is offered for UAV
applications.

Hélène LEPLOMB, SBG Systems, February 2020

“Accurate and lightweight IMU performance leads to high accuracy LiDAR point clouds. Combined withthe ASTRALiTe scanner and LiDAR performance, point clouds with typical densities of 100-300 pts/m2 andcentimeter-level resolution can be achieved”
Andy Gisler, Director of Lidar Systems with ASTRALiTe

About the SBG INS/GNSS and PPK Software
QUANTA KEY FEATURES» 0.03° Roll and Pitch over 360°

» 1 cm RTK GNSS Position» Post-processing with Qinertia PPK
Software

QINERTIA POST-PROCESSING SOFTWARE
After the survey, this full-featured software gives access to offline RTK
corrections and processes inertial and GNSS raw data to further enhanceaccuracy and secure the survey. Trajectory and orientation are greatly
improved by processing inertial data and raw GNSS observables in forward
and backward directions. This advanced software also computes your basestation position to quickly get your project to the centimeter accuracy.

www.sbg-systems.com

SBG Systems EMEA (Headquarters)
Phone: +33 1 80 88 45 00
E-mail: sales@sbg-systems.com

SBG Systems North America
Phone: +1 (657) 845-1771
E-mail: sales.usa@sbg-systems.com

V1.1 – February 2020 – All rights reserved © 2020 SBG Systems» 0.2° Heading (Dual Antenna RTKGNSS)