An underwater towed high-precision gravity and magnetic detection system and method

Abstract

The invention provides an underwater pulling type high-precision gravity-magnetism detection system and method. The system comprises a detection towed body, a depth-keeping towed body, a mother ship used for towing the detection towed body and the depth-keeping towed body and a detection device group arranged on the detection towed body. The mother ship is further provided with a deck measurementand control unit, the mother ship is mechanically connected with the depth-keeping towed body through a photoelectric composite cable, and the depth-keeping towed body is mechanically connected with the detection towed body through a light composite cable. The detection device group is used for detecting a gravitational field and a magnetic force field so as to obtain gravity-magnetism measurementdata, the detection device group is electrically connected with the deck measurement and control unit, the deck measurement and control unit is electrically connected with the depth-keeping towed body through the photoelectric composite cable, and the deck measurement and control unit is electrically connected with the detection towed body sequentially through the photoelectric composite cable, the depth-keeping towed body and the light composite cable. The depth-keeping towed body and the detection towed body can be kept in a stable posture under the deep sea of 2000 m and finish precise gravity-magnetism detection, and a gravity meter and a magnetic device can bear the high pressure and low-temperature environment in the deep sea.

Description

technical field [0001] The invention relates to the field of exploration technology, in particular to an underwater towed high-precision gravity and magnetic detection system and method. Background technique [0002] Deep-sea exploration is a key technology that the country will focus on at present and in the future. Oil and gas exploration requires high-precision measurement data of gravity and magnetic fields (abbreviated as gravity and magnetic fields, the same below), that is, to obtain gravity and magnetic measurement data. The characteristics of environmental gravity and magnetic field and the influence of deep-sea physical environment on underwater gravity and magnetic measurement require scientific and reasonable detection systems and methods. Exploration, including gravity and magnetic detection, is usually completed by a towed system. The mother ship tows the detection tow body, which carries detection equipment for marine environment exploration, and the detection...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, one of the purposes of the present invention is to provide an underwater towed high-precision gravity and magnetic detection system, which can solve the problem that the towed body cannot maintain the stability of the attitude and it is difficult to complete the gravity and magnetic detection in the deep sea environment. question

[0005] The second object of the present invention is to provide a gravity and magnetic detection method, which can solve the problem that the towed body cannot maintain the stability of the attitude and it is difficult to complete the gravity and magnetic detection in the deep sea environment

Images