基于动态气象预报数据的4D航迹预测

摘要

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.%高精度4D航迹预测是新一代航迹空管自动化的技术基础以及空管科技领域亟需的核心问题,考虑气象环境因素的影响则能明显提高航空器航迹预测的精度.利用世界区域预报系统的数字格点数据,首先对高度层进行垂直插值以获取某一剖面的气象信息,采用二次拉格朗日插值确定航段上某一点的温度场和风场的预报值,进而讨论温度场和风场预报值对飞行的影响,修正航空器真空速及地速,利用递推仿真方式求解航空器4D航迹.