Aeromagnetic level gradient measurement system and method for unmanned aerial vehicle

The invention discloses an aeromagnetic level gradient measurement system for an unmanned aerial vehicle. The system comprises an unmanned aerial vehicle platform, an airborne aeromagnetic measurementsystem, a ground measurement and control station, a ground magnetic diurnal variation base station, a field data pre-system, a field data quality analysis system and an indoor data processing mappingsystem; the unmanned aerial vehicle is mainly composed of a vehicle body, a rear engine, a flight control system, a GPS navigation positioning system and a wireless communication system, can achievefull-autonomous flight and remote monitoring. The system is scientific and reasonable in structure and safe and convenient to use, has the high-precision magnetic total field scalar measurement capacity and the magnetic level gradient scalar measurement capacity. The unmanned aerial vehicle has long endurance, ultra-low altitude and full-autonomous flight capacity, medium-low speed flight capacity, high-precision flight con