The application discloses a world time continuous solution method, comprising: obtaining and preprocessing the solution result files of each session in a predetermined
time range; applying uniform constraints to each session after preprocessing, and performing parameter blocking and local parameter
elimination; constructing a
sliding time window in a target
time range, parameterizing the world time by using a segmented linear function in the window, and establishing a session and time node mapping relationship; constructing a
sliding time window on a
global time axis, collecting sessions in the window, superimposing a session weight equation, adding a time node
smoothing constraint, and jointly solving the world time residual increment; superimposing a priori on the joint solution result, recovering a tidal term, and generating a world time continuous sequence. The application solves the problems of the existing world time product, such as limited
time resolution based on daily parameter level combination, insufficient utilization of session level observation geometry and equation information, sensitivity to modeling differences of different session types, and difficulty in adapting to the existing reference framework.