Patent ID: 11913972
Assignee: FIRST INSTITUTE OF OCEANOGRAPHY, MINISTRY OF NATURAL RESOURCES
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A Lowered Acoustic Doppler Current Profiler (LADCP) and an Ultrashort Baseline Positioning System (USBL) combined observation device for installation on a research vessel, comprising:
a LADCP system for obtaining a current velocity of a single small profile;
USBL beacons for locating underwater position information;
a mounting frame;
a cable winch system for driving the mounting frame deep to seabed in a vertical direction to drive the LADCP system to deploy or recover along a vertical profile; and
a correction system for obtaining information on data in seawater in which the mounting frame is located, to calculate an absolute current velocity based on the current velocity obtained by the LADCP and current data obtained by the correction system,
wherein the LADCP system, the USBL beacons and the correction system are mounted to the mounting frame, the cable winch system is arranged on the research vessel, and the cable winch system is connected to the mounting frame;
wherein the correction system comprises a conductivity-temperature depth profiler mounted to the mounting frame and configured for measuring a temperature value, a salinity value and a water depth value of a seawater profile of the mounting frame during deployment and recovery processes and an inertial navigation system mounted to the mounting frame and configured for measuring a rotation angle of the LADCP system during the deployment and recovery processes, to generate angle data of the inertial navigation system;
wherein the mounting frame comprises a load-bearing head connector and a fixing bracket, as well as an inertial navigation system mounting fixture, an upper launch LADCP mounting fixture, a lower launch LADCP mounting fixture, a conductivity-temperature depth profiler mounting base and a USBL beacon mounting fixture mounted inside the fixing bracket;
wherein the load-bearing head connector is located at an end portion of the fixing bracket, and the cable winch system is connected to the fixing bracket through the load-bearing head connector;
wherein two groups of the LADCP system are provided, and the two groups of LADCP systems are mounted to the upper launch LADCP mounting fixture and the lower launch LADCP mounting fixture, respectively; and
wherein the inertial navigation system is mounted to the inertial navigation system mounting fixture, the conductivity-temperature depth profiler is mounted to the conductivity-temperature depth profiler mounting base, and the USBL beacons are mounted to the USBL beacon mounting fixture.