System for weak magnetic signal feature extraction and processing

The utility model discloses a system for extracting and processing weak magnetic signal features. Comprising an acquisition pipeline, weak magnetic signals to be measured arranged in the acquisition pipeline, a magnetoresistive sensor fixedly connected with the acquisition pipeline, a signal processing module and a sensor driver which are in signal connection with the magnetoresistive sensor, and a controller in signal connection with the sensor driver, the A/D conversion module is in signal connection with the controller; the signal feature extraction module is in signal connection with the A/D conversion module; the signal processing module comprises a signal amplification and filtering module in signal connection with the magnetoresistive sensor and a signal identification module in signal connection with the signal amplification and filtering module, and the signal identification module is in signal connection with a signal feature extraction module; and the signal identification module is in signal conne