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Path Selection of Freedom of Sea and Freedom of Navigation Based on Finite Difference Time Domain Algorithm and Positioning System

Based on the finite difference time domain algorithm and positioning system, this paper studies the best route choice for freedom of the sea and freedom of navigation. The best route choice is not only one of the issues that ship pilots often pay attention to, but also one of the important issues that ship management companies often face. one. First, the finite difference algorithm uses the improved shortest path algorithm to quantitatively describe the problem. Next, the Dijkstra algorithm and improved algorithm are implemented based on GPS, and the application of the algorithm is illustrated by an example of the best route selection. By comparison, the improved finite difference algorithm is better than the Dijkstra algorithm in search efficiency.