A method to solve the aircraft magnetic field model basing on geomagnetic environment simulation

•A method to solve the aircraft magnetic field model on the ground is proposed.•The method solves the model by simulating dynamic geomagnetic environment as in the real flying.•The way to control the error of the method was analyzed.•An experiment is done for verification.

In aeromagnetic survey, it is difficult to solve the aircraft magnetic field model by flying for some unman controlled or disposable aircrafts. So a model solving method on the ground is proposed. The method simulates the geomagnetic environment where the aircraft is flying and creates the background magnetic field samples which is the same as the magnetic field arose by aircraft’s maneuvering. Then the aircraft magnetic field model can be solved by collecting the magnetic field samples. The method to simulate the magnetic environment and the method to control the errors are presented as well. Finally, an experiment is done for verification. The result shows that the model solving precision and stability by the method is well. The calculated model parameters by the method in one district can be used in worldwide districts as well.