Research and application of aeromagnetic full axis gradient measurement technology based on large unmanned aerial vehicle
At present,the level of airborne geophysical exploration in China's high seas and Qinghai—Xizang Plateau regions is not high,mainly due to the insufficient range of existing manned aerial geophysical exploration flight platforms in China or the inability to carry out large-scale and low altitude flight measurement work in high-altitude areas.Due to the range of the Rainbow 4 drone reaching 4000 km and the flight altitude reaching 7300 m,after the development of a national key research and development project during the 13th Five Year Plan period,the Rainbow 4 drone's aeromagnetic full axis gradient measurement system has broken through a series of key technologies such as integrated design of detection devices and optimization and improvement of magnetic interference characteristics.It has achieved one-stop measurement of the total aeromagnetic field,horizontal gradient,and vertical gradient based on drones for the first time,After compensation by the aeromagnetic field,the standard deviation is better than±30 pT,the horizontal gradient dynamic fourth order difference is better than±2 pT/m,and the vertical gradient dynamic fourth order difference is better than±6 pT/m,reaching the international leading level of similar measurement systems,greatly improving China's exploration capabilities in difficult and distant areas.
Large unmanned aerial vehicleAeromagnetic full axis gradientHorizontal gradientVertical gradient
万方数据
维普
