Patent ID: 11828830

Abstract:
An LADCP and combined inertial navigation system combined observation system and method. The system includes an LADCP, combined inertial navigation system host, data processing unit, wireless transmission module, voltage-resistant wireless antenna, battery cabin, first and second GNSS antennae and an instrument support. The data processing unit is connected to the LADCP and the system host through serial ports to obtain ocean current profile measurement data, a GNSS position, GNSS orientation data, three-axis acceleration data, a three-axis gyroscope angular velocity, a roll angle, a pitch angle and a course angular rate. Real-time high-precision correction is performed on a three-dimensional flow velocity of an ocean current profile observed by the LADCP based on the orientation data, roll angle, pitch angle and the course angular rate. Accordingly, measurement precision of flow velocity and flow direction by the LADCP is improved, and working costs to carry out profile flow observation are reduced.