Trajectory Prediction Based on Dynamic Weather Forecasting Data

4D trajectory prediction with high precision is a basic technology of trajectory air traffic control automation of new generation as well as a core problem to be addressed by the field of air traffic control science and technology.It is considering the influence of meteorological environmental factors that can significantly improve the accuracy of trajectory prediction.With digital grid data supplied by the World Area Forecast System,this paper processed vertical interpolation on the height layer to obtain the weather information of a certain cross section firstly.Secondly,the forecast value of a certain temperature and wind fields was confirmed with quadratic Lagrange interpolation formula.Then,the effects of the forecast value of the temperature and wind fields was discussed.It was used to amend airspeed and ground speed of aircrafts and to solve 4D trajectory prediction of aircrafts with recursive simulation at last.