Research Progress on Data Processing Method of Weak Magnetic Anomaly

摘要

The magnetic field generated by the magnetic target is superimposed on the geomagnetic field,this magnetic field can change the geomagnetic field.Magnetic anomaly detection is a method to detect magnetic targets by using the change of geomagnetic field.Magnetic anomaly detection is a passive method,magnetic field signal can spread stably across media,and has outstanding advantages in the detection of underwater or underground targets.However,the measured magnetic anomaly signal is easily disturbed by the background magnetic field.