Method and system for indirectly measuring electron paramagnetic resonance amplitude of nuclear magnetic resonance gyroscope

The invention provides a method and a system for indirectly measuring the electron paramagnetic resonance amplitude of a nuclear magnetic resonance gyroscope. The method comprises the following steps: recording a current paramagnetic resonance excitation signal and calculating the signal amplitude of a paramagnetic resonance frequency signal; magnetic field closed loops in X and Y directions are realized; a rotating magnetic field is constructed and applied to the nuclear magnetic resonance gyroscope, and the amplitude of the rotating magnetic field is calculated; opening the magnetic field; adjusting the magnitude of the paramagnetic resonance excitation signal, and obtaining a function relation between the amplitude of the rotating magnetic field signal and the amplitude of the paramagnetic resonance frequency signal; x-direction and Y-direction magnetic field closed loops are realized by using an EPR magnetometer; and measuring the amplitude of the paramagnetic resonance frequency signal according to the a