Trailing suction dredger dredging process data mining and recommending system

The invention relates to the technical field of trajectory analysis, in particular to a method and a system for carrying out construction process identification and process analysis by utilizing ship navigation trajectory and GIS information data provided by an automatic ship identification system of a trailing suction ship. Comprising the following steps: step 1, extracting sailing trajectory data of the trailing suction dredger; 2, preprocessing the navigation trajectory data; step 3, performing construction area identification based on the construction behavior characteristics of the trailing suction dredger; 4, construction starting and ending time is recognized; step 5, identifying regional information of the construction process flow; step 6, project type discrimination; step 7, dividing no-load and full-load data sets; 8, segmenting and storing each track data set into a primary action track fragment cluster; step 9, calculating to obtain each construction process parameter according to each action tra