Digital processing system of geomagnetic weak signal detection

Weak signal detection is very important for the geomagnetic detection system used in the process of underground space exploration and development. In order to improve the stability and reliability of geomagnetic weak signal detection ability, a digital processing system is designed which based on FPGA and upper computer for geomagnetic weak signal detection. The results show that the method in detecting characteristic parameters of the weak signal and improving the signal to noise ratio is a very effective way, the method could effectively detect the desired signal under strong noise background. It could meet the needs of geomagnetic detection system.