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

The invention provides an adaptive time-varying parameter real-time estimation method and system based on a weak measurement technology, and the method comprises the following steps: S1, building a quantum weak measurement optical platform for time-varying parameter real-time estimation, and generating the light intensity of a light source and the light intensity for weak measurement through an optical fiber beam splitter of the quantum weak measurement optical platform; enabling the light intensity subjected to weak measurement to pass through a parameter measurement path of the quantum weak measurement optical platform to generate the light intensity subjected to weak measurement; s2, receiving the light intensity subjected to weak measurement and the light intensity of the light source through a balance detector, and calculating a current phase; s3, adjusting an additional phase in the parameter measurement path according to the current phase; s4, repeating the steps S2 and S3, and performing real-time est