Cesium light pump magnetic measuring method based on fixed-wing unmanned aerial vehicle

Abstract

The invention discloses a cesium light pump magnetic measuring method based on a fixed-wing unmanned aerial vehicle. The method includes: presetting a testing qualification standard, conducting performance testing on the unmanned aerial vehicle, and if testing is qualified, establishing signal connection between a ground measurement and control station and the unmanned aerial vehicle; if the testing is unqualified, conducting the performance testing of the unmanned aerial vehicle again; after the unmanned aerial vehicle reaches measurement height, calculating magnetic compensation coefficient;after magnetic compensation is completed, respectively transmitting magnetic measuring data measured by a cesium light pump magnetometer and navigation data measured by a laser altimeter, a GPS and an IMU to a data collection box through a serial port; after the data collection box receives corresponding magnetic measuring data and navigation data, transmitting the same to a field data preprocessing system for data processing; performing aeromagnetic interpretation on processed data. By the method, measuring accuracy, working efficiency and flying safety are improved, and weight, size and cost of the unmanned aerial vehicle are reduced.

Description

Technical field [0001] The invention relates to the field of geophysical prospecting, in particular to a cesium optical pump magnetic measurement method based on a fixed-wing UAV. Background technique [0002] Aerial geophysical prospecting is a kind of geophysical prospecting method. It is a kind of geophysical prospecting method to detect changes in various geophysical fields during navigation through special geophysical instruments equipped on unmanned aerial vehicles, to study and search for underground geological structures and minerals. Aeromagnetic exploration is currently a relatively mature exploration method. In the past, large-scale manned aircraft were used for work. The flying altitude is above 1,000 meters. It has high speed and is not restricted by ground conditions (such as sea, river, lake, and desert). The area work accuracy is relatively uniform, and it can work in some areas with difficult terrain conditions. In particular, the development of automatic contro...

AI Technical Summary

Problems solved by technology

[0005] The traditional aerial geophysical prospecting method usually adopts multi-rotor aircraft, its stagnation time is only 20-30 minutes, and it can only fly 6-8 kilometers at a time, which greatly reduces the work efficiency; and usually uses the fluxgate magnetometer with low measurement accuracy. Magnetic measurement, its measurement accuracy is about 5nT; moreover, the traditional airborne geophysical detection method has high cost, low safety, large measurement error, and it is difficult to achieve fast and accurate measurement

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