The CDL MiniPOS/NAV System is a highly integrated inertial navigation system designed for use in subsea environments. Combining CDL’s MiniPOS2 inertial navigation technology with RDI’s Doppler Velocity Log (DVL) technology, this system offers enhanced navigational accuracy and stability, particularly for remotely operated vehicles (ROVs) and autonomous underwater vehicles (AUVs). The system significantly reduces the drift typically associated with pure inertial navigation, enabling accurate positioning over long distances without the need for external position inputs.
Key features include:
Navigation Components: Combines inertial navigation with DVL technology for reduced drift and enhanced accuracy.
Depth Rating: Available in multiple configurations (3,000m, 4,000m, and 6,000m depth ratings).
Outputs: Provides positional and motion data such as heading, pitch, roll, depth, X, Y, and Z angular velocities, accelerations, and full positional information.
IMU Specifications:
Standard T16 IMU: Drift under 5 nautical miles/hour.
High-performance T24 IMU: Drift under 1 nautical mile/hour, with superior accuracy in heading and pitch/roll measurements.
Heading accuracy: ±0.169° (T16), ±0.028° (T24).
DVL aiding: 20 meters per hour CEP (T16), 3 meters per hour CEP (T24).
Telemetry Interface: Bi-directional RS422 or RS232, providing data rates up to 115kbaud.
Power Requirements: Between 20 and 35W, with AC and DC supply options (AC 10-260V, DC 20-30V).
Weight and Dimensions:
Subsea unit diameter: 177mm, length: 268mm.
Weight in air: 9.8kg, weight in water: 2.33kg.
Mounting: 4 M10 holes, 144mm x 144mm.
The system also offers easy integration with existing ROV and AUV systems, making it ideal for a wide range of subsea survey and navigation tasks.
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