Boxfish ROV Positioning System: How USBL Positioning Works
Add the USBL (ultra short baseline) underwater positioning system to your Boxfish ROV (remotely operated vehicle) to control and track its location and course during a mission.
The device uses triangulation to pinpoint the position of the ROV. The positioning system consists of a USBL transponder and a beacon. You can mount or suspend the transponder from your vessel. It communicates wirelessly with the beacon on the Boxfish ROV using high-frequency sound waves.
The transponder periodically transmits commands to the beacon, which the beacon will reply to immediately. The transponder can then measure the response time and returning signal direction. This data allows the system to calculate the ROV’s 3D position relative to the boat.
The USBL we use also has an Integrated AHRS (Attitude and Heading Reference System). This system helps compensate for errors caused by the boat pitching, rolling and turning.