Functions
The system supports ultra-low-altitude terrain-following flight surveys; it is equipped with an optical-pump magnetometer (resolution 0.0001 nT) and a three-axis fluxgate magnetometer; it features real-time and post-processing aeromagnetic compensation (post-processing compensation standard deviation better than 0.08 nT); it integrates a laser altimeter (180 m range), RTK GNSS (2 cm positioning accuracy), and a high-precision IMU attitude module; the accompanying ground-station software supports automatic route planning, diurnal variation correction, quality evaluation, and rapid mapping.
Measurement Parameters
Resolution 0.0001 nT, sensitivity 0.6 pT/√Hz (absolute) / 10 pT/√Hz (locked), bandwidth 100 Hz, range 1000–100000 nT, probe dimensions 12.7×16.4×20.5 mm; three-axis fluxgate: range ±100 μT, noise 10 pT rms/√Hz, orthogonality ±0.2°; laser altimeter: 180 m / resolution 1 cm / accuracy ±10 cm; RTK GNSS: 2 cm; onboard dynamic noise 0.08 nT; ADC 24-bit, sampling rate 1/2/5/10/20 Hz adjustable; total system weight 1.5 kg, power consumption 15 W.
