High-precision cesium optical pump dynamic magnetic measurement system applied to ship-borne hard links in shallow water areas

Abstract

The invention provides a high-precision cesium optical pump dynamic magnetic measurement system applied to ship-borne hard links in shallow water areas, which is characterized in that the system comprises a ship-borne quick-release connecting structure, a cesium optical pump acquisition system, an RTK (Real-Time Kinematic) positioning structure, an IMU (Inertial Measurement Unit) inertial navigation system, a watertight packaging probe cover and a power supply system; the ship-borne quick-release connecting structure is mounted on the lower side of the cesium optical pump acquisition system; the cesium optical pump acquisition system and the ship-borne quick-release connecting structure are connected with a ship through quick-release screws; the RTK positioning structure, the IMU inertial navigation system and the watertight packaging probe cover are installed on the upper side of the cesium optical pump acquisition system; and the power supply system is connected with the cesium optical pump acquisition system, the RTK positioning structure and the IMU inertial navigation system. The ship-borne cesium optical pump system is subjected to related modification and is equipped with an angle measurer, a carbon fiber telescopic pipe, a sealed waterproof probe outer cover and the IMU inertial navigation system, the whole set of device can be used independently, the model of a loading ship is not limited, and connecting devices can be changed according to different ships.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a high-precision cesium optical pump dynamic magnetic measurement system applied to ship-borne hard links in shallow waters. Background technique [0002] The magnetic field that exists around the earth is called the geomagnetic field. Marine geomagnetic field measurement is usually a process of geomagnetic measurement carried out by ships carrying magnetometers while navigating at sea. At present, most marine magnetic field measurements can only be carried out by towing. The magnetic probe is towed in the seawater behind the survey ship, and the length of the towing cable is more than three times the length of the ship. This method of operation is easily restricted in some sea areas, such as offshore aquaculture areas, polar ice floes, etc., which will cause damage or even loss of the magnetic probe. In order to solve this problem, the patent No. 201520274872.7...

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Problems solved by technology

This method of operation is easily restricted in some sea areas, such as offshore aquaculture areas, polar ice floes, etc., which will cause damage or even loss of the magnetic probe

In order to solve this problem, the patent No. 201520274872.7 proposes a ship-borne magnetic detection device. The application is installed on the hull of the survey ship instead of being towed at the stern, so as to avoid damage to the magnetometer while realizing data measurement. However, the patent Because it is completely installed on a ship, the material of the ship will affect the measurement results obtained by the measuring instrument. The materials of different ships are different, and the magnetic interference generated is also different. The results produced by the magnetometer completely installed on the ship are not accurate.

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