Our sensors are named SL for subsea LiDAR.
The 3D at Depth SL1 sensor was designed to address the needs of the subsea construction, survey, and inspection industry in terms of range, accuracy, field of view, depth, and integration. The result is a system that integrates a unique optical design, a custom high sensitivity receiver, a sub-nanosecond pulsed high peak power solid state laser, high speed electronics, and patented processing methods to provide the accuracy and ranges required for subsea measurement tasks.
The SL1 has an embedded MEMS motion sensor to calibrate pitch and roll and create real world reference frames. This overcomes the inability to “level” a subsea sensor. The system also comes with an onboard computing subsystem and 750GB internal hard drive as well as a 64Gb internal solid state drive for fast performance and flexibility.
For real time data QC and data pre processing, the system includes a computer with 3D at Depth software for collection (3D Collect), viewing (QuickView) and the creation of LAS and 3DC files (3D Cloud). 3DC is a proprietary compression format which allows operators to move data across low bandwidth networks – from vessels to on shore processing teams.
Download a PDF version of the SL1 Data Sheet:
SL1 Specifications (381.0 KB)
|Tripod Configuration||ROV Mounted|Depth rating 3000 meters Diameter (OD) 8.3 inches (210mm) Length 24.6 inches (624mm) Operating Temperature 34°C to -5°C Weight in air 90 lbs. (40.8 kg) Weight in water 34 lbs. (15.4 kg) Laser class Class 1 (air) to Class 3B (Subsea) Measurement Method Time of Flight (ToF) Pulsed Pulse Repetition Rate 40kHz
Data sampling rate 40 kHz Field of View 30° x 30° (Azimuth and Elevation) x 330° pan - total field of view is 30° x 360° Programmable scan paths within the field of view
Range Minimum: ~ 2m
Maximum: ~ 45m Depends on water conditions and target reflectivity. Can be modeled for specific conditions.
Range precision ±6mm @ 2-40m, 1σ Per scan point to point accuracy ±4mm, 1σ
Single measurement at 20 meter range
Beam footprint @10m = 4.5mm, @20m = 8.6mm Pan and Tilt encoder accuracy ±0.05° Spatial resolution Maximum resolution of 1 mm between points Point collected at every 0.01° in azimuth and elevation
3D Collect - Graphical User Interface (GUI) Point and click interface to control the sensor and capture and process datasets Scripting available for automated collection
Integrated pan/tilt control Integrated software control interface for a single z-axis pan rotation motor and encoder (SL1) and dual axis pan tilt (SL2) Standard point cloud output formats .LAS, .e57 formats Latest industry standard point cloud format
3D Cloud Point Cloud Processing tool multi-return processor generates point clouds automatically clutter and SNR filters embedded
Communications TCP/IP SL1 connects through a standard TCP/IP connection
Laser specification Class 1 / Class IIIB Programmable safety settings
Peak power consumption 110 Watts nominal
Power supply 24V DC optional AC power unit available