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DVL | Pathfinder

$24,999 USD

Super stabilize your REVOLUTION ROV with a Doppler Velocity Log. Combined with onboard sensors, it is able to provide more capability to fight current, hold station and hold and measure an altitude from the seafloor.

DVL | Pathfinder

$24,999 USD

Super stabilize your REVOLUTION ROV with a Doppler Velocity Log. Combined with onboard sensors, it is able to provide more capability to fight current, hold station and hold and measure an altitude from the seafloor.

  • Depth rating 89-icon

    0.2 - 89m altitude

  • Absolute GPS Positioning icon

    Precise USBL position

  • 360 turn radius icon

    Station keeping

  • Pivoting tether connection-icon

    Better navigation in current

  • Portable Icon

    Auto altitude holding mode

Doppler velocity log for stabilization and autonomy on your REVOLUTION ROV

The DVL mounts on the bottom of the REVOLUTION and sends four acoustic beams on angles downward. Reflections then calculate the altitude (depth from bottom) and provide an estimate of the speed and direction of movement.

Combined with Deep Trekker BRIDGE sensor technology, the DVL provides more accurate and precise positioning and station holding - even in current.

DVL for search and recovery missions

During a search and recovery mission, the DVL will help maintain an optimal altitude for the imaging sonar, such as 15m above with the sonar on a 15 degree angle downward.

Position/Station holding with DVL

A DVL also is used to help hold position, say when performing an inspection and wanting to hold against current, or when using a manipulator or laser scanner where it is easier to be dead steady.

Automatic altitude hold

Use a DVL on the ROV to help stay on course in current, maintain an altitude above the sea floor. This is important for benthic surveys to get a clear picture without crashing into the bottom and stirring up sediment, making the survey more difficult.

Pathfinder DVL Bottom Tracking

Resolution0.01 mm/s (0.1 cm/s default)
Velocity Range±9 m/s or +16 m/s upon request
Maximum Altitude89 m (150 m optional)
Minimum Altitude0.2 m (<20 cm altitude mode available)
Precision @ 1 m/s±0.5 cm/s @ ½ alt
Precision @ 3 m/s±1.5 cm/s @ ½ alt
Precision @ 5 m/s±2.3 cm/s @ ½ alt
Long Term Accuracy±1.15% ±0.1 cm/s

Pathfinder DVL Water Profiling

Cell Sizes0.1 m–4 m
Resolution1 mm/s
Maximum Range47 m
Minimum Range1.9 m
Velocity Range±12 m/s
Maximum Ping Rate12 Hz
Precision @ 1 m/s±7.5 cm/[email protected] m bin
Precision @ 3 m/s±7.5 cm/[email protected] m bin
Precision @ 5 m/s±7.7 cm/[email protected] bin
Long Term Accuracy±0.3% ±0.1 cm/s

Pathfinder DVL Acoutic

Center Frequency614.4 kHz
Source Level (re 1 μPa)215 [email protected] m
1-Way Beam Width2.2°
Number of Beams4-phased array
Beam Angle (nominal)30°
Bandwidth (nominal)6.25% of center freq.

Pathfinder DVL Environmental

Maximum Operating Depth300, 1000 m
Operating Temperature-5°C to 45°C
Storage Temperature-30°C to 60°C
Weight in Air (OEM/SC)1.15/1.9 kg
Weight in Water0.7 kg