Navigation channel underwater topographic change analysis system and method

The invention discloses a channel underwater topographic change analysis system and method, and relates to the technical field of shipping, and the method comprises the steps: building a monitoring station along the extension direction of a channel, obtaining monitoring data after monitoring, and storing the obtained monitoring data; a plurality of monitoring stations are arranged in the length direction and the width direction of the channel, water flow data and siltation data of the channel are measured, and measured values are obtained; obtaining a plurality of groups of water surface coefficients Sm and underwater coefficients Sx, obtaining a correlation coefficient R, and determining a correction factor K; calculating the data of the point at the next moment, correcting the topographic change obtained based on the image to obtain a correction value, and representing the topographic data at the next moment by using the correction value; the stability of the underwater topographic data is improved, the int