Ultrasonic time difference method flow calculation method and system based on multi-objective optimization algorithm

The invention provides an ultrasonic time difference method flow calculation method and system based on a multi-objective optimization algorithm. The method comprises the following steps: constructing an ultrasonic time difference method flow model; calibrating optimal solution parameters in the ultrasonic flow model by adopting a cuckoo multi-objective optimization algorithm; the optimal solution parameters are input into the constructed ultrasonic time-difference method flow model, and an optimal ultrasonic time-difference method flow model is obtained; and inputting the measured value of the local flow of each layer of the river flow cross section into the optimal ultrasonic time-difference method flow model, and outputting the optimal calculation value of the average flow of the river flow cross section. According to the method, the average flow of the river flow section can be accurately calculated in real time; the flow model parameters can be calibrated more quickly; multi-target benefits are considere