基于QAR数据的导航台定位误差分析
Analysis of Navigation Station Positioning Errors Based on QAR Data
苟利鹏 1卢朝阳 1谈翌平 1熊章佳 1李浩1
作者信息
- 1. 南京航空航天大学,江苏 南京 211000
- 折叠
摘要
随着民航业的持续发展,空中航路日益拥堵,安全问题日益凸显.民用航空器主要依靠陆基导航设备定位,以确保准确航行在预定航路,故而导航设备的可靠性和准确性显得尤为重要.为航空器能够及时准确识别故障导航台,评估导航精度,实现精准定位,可以充分利用机载QAR数据对导航台进行间接校验.文章对机载数据进行卡尔曼滤波去噪,通过坐标转换、样条插值、航迹推测和数据融合,得到平面标称航迹.对导航台定位误差及相应的影响因素进行相关性分析及共线性统计,建立岭回归模型,量化各因素对误差的影响程度;基于动态时间规整的方法提出一种导航台可用性度量方法,实现导航台可用性和导航精度的度量.通过实际案例,证明了模型的可行性.
Abstract
With the development of civil aviation,airspace congestion become increasingly prevalent,high-lighting the escalating issues of safety.Civil aviation relies predominantly on ground-based navigation e-quipment for aircraft positioning,ensuring navigation along predetermined routes.Consequently,the relia-bility and accuracy of navigation equipment become paramount.Promptly identifying faulty navigation sta-tions,assessing navigation accuracy,and achieving precise positioning are imperative.Leveraging QAR data for the indirect verification of navigation stations facilitates these processes.This study employs Kal-man filtering to denoise onboard big data,utilizing coordinate transformation,spline interpolation,trajecto-ry prediction,and data fusion to obtain a nominal flat trajectory.Based on the theoretical distribution of errors,the positional error is calculated with the nominal trajectory as a reference.Subsequently,a ridge regression model is established to determine the degree of influence of each factor on errors.Furthermore,a method for measuring navigation station availability is proposed based on dynamic time warping,facilita-ting the quantification of navigation station availability and accuracy.Finally,the model is validated as ef-fective through real-world cases.
关键词
航空运输/定位误差/QAR/导航精度及可用性/轨迹融合Key words
air transportation/positioning errors/QAR/navigation accuracy and availability/trajectory fu-sion引用本文复制引用
出版年
2024
NETL
NSTL
万方数据