Ship navigation risk assessment method based on navigation radar data

The invention discloses a ship navigation risk assessment method based on navigation radar data. The method comprises the steps of 1, coordinate transformation; 2, calculating coordinates of a target ship; 3, determining navigation safety influence factors; 4, acquiring a navigation safety influence factor value; 5, calculating the risk membership degree of each navigation safety influence factor; step 6, carrying out weight distribution on each navigation safety influence factor; and 7, calculating the overall collision risk degree according to the risk membership degree in the step 5 and the distribution weight in the step 6. According to the method, the calculation model of each key influence factor of the ship navigation risk can be quantified, and the dimensional influence among the factors is eliminated in the model; therefore, scientific preprocessing of navigation radar data can be realized, an effective ship navigation safety evaluation model and a weight distribution model thereof are established, a