Unmanned aerial vehicle magnetic field vector measurement precision system

The invention discloses an unmanned aerial vehicle magnetic field vector measurement precision system which is composed of an aerial carrier system, an aeromagnetic three-component magnetometer and an accessory, can accurately measure a vertical gradient and an oblique gradient perpendicular to a measuring line respectively, and can measure magnetic three-component data and magnetic gradient data in a certain direction at the same time. The method does not need the conversion calculation of conventional total intensity magnetic anomaly for secondary calculation, can avoid errors possibly introduced in the conversion process, is ingenious in design and reasonable in structure, magnetic anomaly three-component data is only related to field source magnetic parameters such as the total magnetization intensity direction, direction information of a normal field does not need to be considered in the application process, and the method is suitable for large-scale popularization and application. The method is slightly