摘要
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。
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 WoAd 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 air- crafts and to solve 4D trajectory prediction of aircrafts with recursive simulation at last.
出处
《航空计算技术》
2013年第4期34-38,共5页
Aeronautical Computing Technique
基金
国家自然科学基金项目资助(61174180)
江苏省自然科学基金项目资助(BK2010502)
江苏省产学研联合创新基金项目资助(BY2012014)
南京航空航天大学研究生创新基地(实验室)开放基金项目资助(kfjj120218)
中央高校基本科研业务费专项资金项目资助
关键词
航空气象
4D轨迹预测
GRIB
拉格朗日插值
aviation meteorology
4D trajectory prediction
GRIB
Lagrange interpolation
