Rubidium spin exchange relaxation free magnetometer based receiver

A very low frequency (VLF) receiver, comprising:

• a magnetometer that detects a magnetic field, wherein the magnetometer comprises a rubidium gas cell;
• a buckyball-shaped frame enclosing the magnetometer;
• a number of inductive coils mounted on the buckyball shaped frame, wherein the inductive coils form a multi-axis array;
• a high bit resolution analog to digital converter (ADC) that receives an electrical signal representative of VLF electromagnetic signals detected by the magnetometer;
• a single board computer that receives a digital signal from the ADC and applies a neuromorphic denoising filter to improve signal to noise ratio;
• and
• a closed loop current controller connected to the inductive coils and running on the single board computer, wherein the closed loop current controller controls magnetic field strength of the inductive coils to maintain a uniform magnetic field across the rubidium gas cell to allow the ADC to detect the VLF electromagnetic signals.