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DVL-300K-Phased

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Doppler velocity log (DVL) Phased

  Key Features
  • Phased-array technology: Ensures accurate and stable velocity measurements.
  • High bottom tracking performance: Reliable up to 200 m altitude with a velocity accuracy of ±0.3% ±1 mm/s.
  • Extended water profiling range: 4.5–150 m with long-term accuracy ±0.2% ±2 mm/s.
  • Rugged titanium housing: Lightweight (<9 kg in air) and corrosion-resistant for long-term deployments.
  • Flexible integration: RS-422 communication and PD6 (ASCII) data format, compatible with INS and control systems.
  • Versatile depth ratings: Standard 300 m, optional 3000 m and 6000 m for deep-sea applications. 

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    System Composition

    The DVL-300K-Phased Doppler Velocity Log consists of two main components: a phased-array transducer and an electronic chassis, featuring an integrated waterproof design.

    • Phased-array transducer (waterproof): Responsible for transmitting and receiving acoustic signals, capturing velocity-sensitive Doppler shifts.
    • Electronic chassis: Handles signal preprocessing, acoustic analysis, velocity calculation, and acoustic transmission functions.

    This flexible design supports both separate configuration and fully integrated options, ensuring adaptability to different vehicle layouts and integration requirements.

    Specifications

    Specification Parameter
    Working Frequency600 kHz
    Array TypePhased Array (4 beams)
    Bottom Tracking Altitude1 m – 80 m
    Bottom Tracking Velocity Range±7.5 m/s
    Bottom Tracking Accuracy±0.2% ±1 mm/s
    Bottom Tracking Resolution0.05 mm/s
    Water Profiling Range2 m – 50 m
    Water Profiling Velocity Range±7.5 m/s
    Water Profiling Long-Term Accuracy±0.2% ±2 mm/s
    Source Level (re 1 μPa)215 dB @ 1 m
    Beam Width (1-Way)2.3°
    Beam Angle (Nominal)30°
    Maximum Operating Depth300 m (options: 3000 m, 6000 m)
    Current Profiling Capability10 m fixed layer
    Acoustic Array Pressure Resistance1 MPa (customizable per requirement)
    Velocity Measurement ModesBottom Tracking / Auto Current Tracking (automatic switching)
    Sound Speed CorrectionNot required
    Operating Voltage18 – 36 VDC
    Average Power Consumption≤ 15 W
    Operating Temperature−5 °C to +45 °C
    Storage Temperature−30 °C to +60 °C
    Electronic Chassis Dimensions125 × 100 × 100 mm
    Phased Array DimensionsΦ82.5 × 36 mm / Φ75 × 40 mm (excluding cable)
    WeightPhased Array: <0.6 kg; Signal Processing Module: <0.9 kg
    CommunicationsRS-422; Output Data Format: PD6 (ASCII); Frames Transmitted in Bottom Tracking Mode：:BI, :BD Frames Transmitted in Water Layer Tracking Mode：:WI, :WD

    Applications


    • Autonomous Underwater Vehicles (AUVs)
      The DVL-300K-Phased Doppler Velocity Log is well-suited for both compact and large-diameter AUVs, providing highly accurate bottom velocity and altitude measurements. This enables precise navigation, path planning, and control even in GPS-denied environments.
    • Remotely Operated Vehicles (ROVs)
      For inspection-class ROVs, the DVL-300K-Phased ensures reliable bottom tracking and altitude data, supporting stable maneuvering and positioning in near-bottom or confined subsea environments.
    • Uncrewed Surface Vessels (USVs)
      On surface platforms, the DVL-300K-Phased delivers dependable speed-over-ground measurement and drift compensation, maintaining navigation accuracy when GPS signals are unavailable, degraded, or intentionally denied.

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