Marine geomagnetic daily variation observation device and geomagnetic measuring method

Abstract

The invention discloses a marine geomagnetic daily variation observation device and a geomagnetic measuring method. The device comprises an observation boat and a plurality of floating main bodies arranged on the observation boat, wherein geomagnetic equipment is mounted on each floating main body; each floating main body comprises a positioning device, a driving device, a wireless communication device, a data processing device, a storage device and a power supply device; a control center is arranged on the observation boat; and the control center comprises a wireless communication unit, a data processing unit, a storage unit and an alarm device. The floating main bodies are launched in deep seas on latitude to be measured, and data collection is carried out on a geomagnetic field on the latitude without taking the observation boat as a carrier after magnetic field interference information of the floating main bodies is collected by a proton magnetometer, the observation is not restricted by an observation point, and the floating main bodies are quickly launched to a plurality of observation points, so that the efficiency of data collection is improved greatly.

Description

technical field [0001] The invention relates to the technical field of marine geomagnetic field measurement, in particular to a marine geomagnetic diurnal variation observation device and a geomagnetic measurement method. Background technique [0002] The geomagnetic field refers to the natural magnetic phenomenon that exists inside the earth. Marching and sailing use the effect of the geomagnetic field on the compass to orient themselves. People can also look for mineral deposits according to the distribution characteristics of the geomagnetic field on the ground. Changes in the geomagnetic field can affect the propagation of radio waves. When the local magnetic field is strongly disturbed by sunspot activities, long-distance communication will be seriously affected or even interrupted. If there is no geomagnetic field, the powerful stream of charged particles emitted from the sun (usually called the solar wind), it will not be deflected by the geomagnetic field, but direct...

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Problems solved by technology

[0003] Therefore, the measurement of the geomagnetic field is a very important scientific research activity. The geomagnetic field is not a constant value. The daily variation of the geomagnetic field is generally large during the day and small at night. During the measurement of the geomagnetic field, in order to ensure the measurement data Generally, it is necessary to set up a geomagnetic diurnal variation observation station in the survey area or near the same latitude area to conduct synchronous observation of the geomagnetic diurnal variation. The geomagnetic diurnal variation observation station is required to be able to control the entire survey area. It is relatively easy to select a site for variable observation stations, but it is relatively difficult to select a site for remote sea geomagnetic field measurements. For remote sea measurements, magnetic diurnal variable observatories can only be placed on survey ships. Because the survey ships themselves are affected by ocean currents and sea winds, etc., The position of the measurement is not fixed, which causes the geomagnetic diurnal variation observation station to fail to meet the required measurement accuracy. CN201810652737.X discloses a marine aeromagnetic diurnal variation station and a geomagnetic measurement method based on an unmanned aerial vehicle. The UAV equipped with geomagnetic equipment is transported to the measurement area in the open sea, and the compensation flight, position adjustment and fixed-point hovering of the UAV are controlled by the UAV flight control system, so that the geomagnetic equipment on the UAV can be accurately measured. The geomagnetic data of the measurement point is measured, but this method also has limitations. The drone must use the measurement ship as a carrier, so that it can only drive to the next measurement point after the measurement is completely completed at a certain measurement point. The efficiency of measurement is very slow, how to improve the efficiency of measurement is a problem to be solved

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