Processing Method of Multi-Rotor UAV-Based Aeromagnetic Data in the Shuichang Iron Deposit
The Shuichang iron mine is located in the iron ore mineralization belt on the western edge of the Qian'an Uplift in Tangshan.Currently,the shallow ore body in the mining area has been fully mined,and there is an urgent need to expand the deep mining space.The tailings accumulation in the mining area is severe,and the surface conditions are complex,making it difficult to conduct ground magnetic surveys.In response to the above issues,this article conducted research on the aeromagnetic measurement,data processing,and comparative analysis of multi rotor unmanned aerial vehicles.This study is the first to use the DN20G4 quadcopter drone equipped with Magdrone R3 flux gate sensors to conduct 1:10,000 large-scale aeromagnetic measurements in the area.Due to the presence of interference magnetic fields introduced by the flight platform in the original aeromagnetic data,this paper establishes a magnetic compensation model for the maneuvering interference error of the flight platform based on the Tolles-Lawson model,which effectively solves the fixed field interference,induced interference,and vortex interference in flight operations.After magnetic compensation processing,the horizontal difference between measuring lines was eliminated through rough leveling and fine leveling of cutting lines.Finally,the results obtained through magnetic compensation and leveling were compared with ground magnetic survey data,and it was found that the abnormal shapes of the two were highly consistent,reflecting the practicality and effectiveness of this processing method.The research results of this article can provide reference for the rapid and effective exploration of deep and peripheral ore deposits in similar scenarios in the future.
UAV aeromagnetic systemmagnetic compensationlevelingShuichang iron depositQian'anHebei Province
万方数据
维普
