High-Depth Doppler Velocity Log (DVL) | Advanced 3D Underwater Navigation & AUV Velocity Sensor

Product Overview

The DP-D500 Doppler Velocity Log (DVL) is a high-performance underwater navigation system designed for autonomous underwater vehicles (AUVs), manned submersibles, and surface vessels. Using advanced Doppler effect technology, the DVL provides real-time 3D velocity measurement and precise bottom-altitude sensing, enabling high-accuracy underwater navigation even in deep-water and dynamic marine environments. The system supports both standalone operation and integration with Inertial Navigation Systems (INS) for enhanced positioning accuracy and mission reliability.

Core Functions

• Real-Time 3D Velocity Measurement: Accurate X, Y, Z-axis velocity data for navigation and maneuver control.
• Bottom-Altitude Detection: Measures vertical distance from the vehicle to the seabed to ensure safe operation in varying depths.
• Internal Data Logging: Stores navigation and velocity data internally for up to 312 hours for post-mission analysis.
• Rapid Data Availability: Provides valid navigation output within 45 seconds after system power-up.

Technical Performance

• Operating Frequency: 150 kHz ± 1 kHz
• Input Voltage: 44–52 VDC (nominal 48 VDC)
• Velocity Range: -15 kn to +15 kn
• Velocity Accuracy: ≤ 2‰ ± 2 mm/s (@ Sea State 3 or lower, flat muddy seabed, bottom-tracking mode)
• Maximum Bottom Tracking Depth: 500 m (flat muddy seabed)
• Minimum Detectable Depth: ≤ 4 m
• Maximum Operational Depth: 1000 m (customizable)

Mechanical & Electrical Interfaces

• Electronic Unit Dimensions: ≤ 300 × 230 × 160 mm (excluding connectors and mounting base)
• Transducer Array Dimensions: ≤ Φ220 × 80 mm
• Electronic Unit Mounting: 242 × 180 mm with 7×M8 transducer mounting holes
• Electrical Connections: Four main interfaces (XS1–XS4) for transducer array, velocity output, data download, and 345 VDC power input
• Communication Protocols: RS422 output for real-time velocity & altitude; additional RS232 ports for configuration and data download
• Cable Specifications: 1.3 m high-pressure wet-end cable; 0.5 m dry-end cable with water-tight connectors

Advantages

• Deep-Water Compatibility: Customizable up to 1000 m depth for oceanographic surveys and deep-sea exploration
• High Precision & Reliability: Velocity measurement accuracy ≤ 2‰; robust against environmental noise and hydrodynamic conditions
• Rapid Deployment: Easy installation, rapid calibration, and quick data output for mission-critical applications
• Durable Design: Sealed electronics and pressure-resistant transducer ensure long-term reliability in harsh marine environments
• Integrated Data Management: Onboard logging supports extended mission analysis and post-processing

Applications

• AUV & Submersible Navigation: Real-time velocity and altitude measurement for precise underwater maneuvering
• Marine Survey & Oceanography: Bathymetry, seabed mapping, and environmental monitoring
• Hydrographic & Offshore Operations: Navigation in shallow and deep-water construction projects
• Autonomous Mission Planning: Integration with INS and vehicle control systems for long-duration missions
• Scientific Exploration: Underwater research, seabed studies, and resource monitoring