The CDL MiniPOSNAV system combines CDL'S MiniPOS2 inertial navigation product with Teledyne RDI's DVL technology in a single housing which ensures ease of calibration and integrity of the calibration data. The combined pressure housing allows for its reduced size and weight, making the system easier to integrate into modern ROV spreads.
DVL aided inertial navigation allows the drift rate inherent in pure inertial navigation systems to be greatly reduced, therefore the system is able to navigate accurately over long distances with no external position input. CDL can provide specially designed computer software which allows this integrated DVL data, to allow the MiniPOSNAV to output high update rate, high accuracy, and smoothed positional information which can be used to greatly improve a wide range of subsea survey tasks.
LBL to allow the MiniPOSNAV to output high update rate, high accuracy, smoothed positional information which can be used to greatly improve a wide range of subsea survey tasks.
MiniPOSNAV uses a high grade Ring Laser Gyrocompass (RLG) which can also be aided on the surface by GPS. Two grades of RLG sensor can be fitted to allow medium or high grade positioning accuracy.
System outputs include: Heading, Pitch, Roll, Depth, X, Y and Z angular velocities, X, Y and Z linear accelerations, Heave, Surge and Sway as well as full positional information in a variety of coordinate systems.