Time-varying parameter real-time estimation method and system based on weak measurement technology

The invention provides a time-varying parameter real-time estimation method and system based on a weak measurement technology, and the method comprises the steps: 1, building a quantum weak measurement optical platform for time-varying parameter real-time estimation, introducing an external signal in a weak coupling process, and generating a time-varying phase parameter; 2, receiving a light intensity difference through a balance detector, and calculating a current phase; 3, adjusting the reference phase according to the current phase, and enabling the system to work in a preset sensitivity and dynamic range; 4, the step 2 and the step 3 are executed repeatedly, and real-time estimation of the time-varying phase is achieved; and 5, after the measurement is finished, carrying out data processing on an estimation result according to actual needs. According to the method, high-precision real-time estimation of time-varying parameters can be realized, the sensitivity and the dynamic range are adjustable, and weak