Surveying Solution Developed by Cadden
Our partner Cadden held its new R2D3 conference, dedicated to the latest progress in the Representation of Reality in 3 Dimensions, on June 27th, 2019. On this occasion, they conducted an autonomous bathymetric survey of the Loire river in Nantes, France.
As the French representative for OceanAlpha, they equipped a SL40 Autonomous Survey Boat with a R2Sonic 2020 Multibeam Echosounder and SBG’s Ekinox2-D RTK.
Cadden then presented the survey demonstration and its solution scheme at the event.
Fully Equipped for Bathymetry
For multibeam bathymetry, Cadden has chosen the OceanAlpha SL40 which is a 1.6-meter-long waterjet Unmanned Surface Vehicle (USV). Payload goes up to 15 kg of survey instruments, which makes it the ideal surveying platform for smaller-sized multibeam echo sounder.
The solution brought by Cadden integrates:
- A R2Sonic 2020 MBES, convenient for shallow water hydrographic surveys
- A Valeport Mini SVS for higher survey accuracy
- The very compact Ekinox2-D Dual Antenna Inertial Navigation System from SBG Systems. This Survey-grade IMU has an RTK Heading GNSS receiver embedded, which provides a position accuracy to the centimeter.
Data from this inertial sensor is also post-processed with SBG’s Post-Processing software: Qinertia.
- An AML Oceanographic Base-X2
- A QPS Qinsy and Qimera
- A Velodyne Lidar, Inc. VLP16
Check out the demonstration results!
- 0.02° Roll & Pitch (RTK)
- 0.05° Dual Antenna Heading
- 1 cm RTK GNSS Position @ 200 Hz
- Post-processing with Qinertia PPK Software
- 5 cm Heave, 2.5 cm Delayed Heave
- Ethernet, Serial, and CAN Interfaces