An underwater investigation equipment retractable and underwater position measurement system

Abstract

The invention discloses a retractable and underwater position measuring system for underwater investigation equipment, comprising: a fixing device; Including the support arm and the telescopic arm, the telescopic arm can extend 500mm; the steel wire rope is arranged on the support arm and the telescopic arm, and the steel wire rope is connected with the underwater survey equipment; the underwater position measuring device is set on the hanging device, and the underwater position measurement The device includes a goniometer and a length measuring device. The system is simple in operation and reliable in performance. It can adjust the position of the underwater survey equipment in real time and measure its underwater position, so as to obtain a more accurate underwater position of the underwater survey equipment.

Description

technical field [0001] The invention relates to the technical field of marine resource exploration, in particular to an underwater survey equipment retractable and underwater position measurement system. Background technique [0002] In marine engineering surveys, underwater survey equipment such as side scan sonar, shallow stratigraphic profiler, marine magnetometer, single-point current meter, sound velocity meter, temperature and salinity instrument, and seabed surface sampler can be used to measure seabed topography and seabed strata. Structure, current characteristics, seawater sound velocity characteristics, seawater temperature salinity characteristics, seabed surface sediment characteristics, etc. Since the underwater survey equipment of these instruments is not hard-connected to the survey vessel, there are deficiencies in the measurement: [0003] (1) In the marine engineering survey, the underwater tow fish of the side scan sonar, the underwater tow fish of the m...

AI Technical Summary

Problems solved by technology

[0003] (1) In the marine engineering survey, the underwater towfish of the side-scan sonar, the underwater towfish of the magnetometer, and the underwater towbody of the shallow stratum profiler are flexibly connected with the survey ship through cables, and the underwater towfish It is difficult to accurately measure the underwater position; at the same time, it is difficult to adjust the position of the underwater survey equipment in real time due to the large resistance of the water flow during the measurement

In shallow water (water depth less than 20m), the ultra-short baseline (USBL) cannot be used for underwater positioning. It can only be estimated by the length and angle of the towline, and the position deviation is large

[0004] (2) During fixed-point measurement in marine engineering surveys, single-point current meters, temperature and salinity depth meters, sound velocity meters, and seabed surface samplers are flexibly connected to the survey ship through cables, and will also be washed by ocean currents during lifting and lowering. It is not vertically lifted, and the length released by the cable is not the depth of the equipment, so it is impossible to accurately locate the depth of the equipment

[0005] In summary, the existing underwater positioning system is not suitable for shallow water areas, and there is no system for underwater survey equipment retraction and underwater position measurement in shallow water areas.

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