一种GLS连续下降进近飞机位置偏差计算方法  

A Calculate Method of Aircraft Position Deviation under Condition of GLS Continuous Decline Approach

作　　者：刘文学[1] 王亮亮 缪炜涛[1] 薛芳芳 葛声 LIU Wen-xue;WANG Liang-liang;MIAO Wei-tao;XUE Fang-fang;GE Sheng(Xi′an Aeronautics Computing Technique Research Institute,AVIC,Xi′an 710068,China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710068

出　　处：《航空计算技术》2020年第4期5-8,共4页Aeronautical Computing Technique

基　　金：工信部预研项目资助(G488A19144002-17)。

摘　　要：在GLS连续下降进近过程中,飞机需要按照一定的下滑角进行进近。在下降过程中,由于受到外界因素影响,难免会与理论下降航道产生偏差。飞行员为了便于安全控制飞机,需要对进近过程中的飞机水平、垂直偏差距离进行计算。在GLS进近过程中,不再使用DME来测量距离,而是采用机载差分接收机计算的飞机位置与跑道入口坐标之间的距离作为参考信息。利用经纬度信息,先将飞机起始下降位置和飞机实时位置投影到水平面上,通过经纬度投影计算出投影距离,再通过起始位置和实际位置进行磁航向角计算,进而得到水平距离偏差。得到水平距离后,进一步通过连续下降进近过程中几何关系和飞机当前高度得到飞机的垂直高度偏差,并进行数学公式推导。通过基于模型的SCADE SUITE建立了算法模型,并对模型进行了仿真。结果表明:算法能够准确地计算进近过程中的飞机位置偏差,满足精度要求,算法稳定可靠,达到了预期效果。During GLS continuous descent approach,the aircraft needs to approach according to a certain glide angle.During descent,due to the influence of external factors,it is inevitable to deviate from the theoretical descent channel.In order to control the aircraft safely,the pilot needs to calculate the horizontal and vertical deviation distance of the aircraft during the approach process.In the process of approach,DME is no longer used to measure the distance,but the distance between the aircraft position calculated by airborne differential receiver and runway entrance coordinate is used as the reference information.After obtaining the horizontal distance,the vertical altitude deviation of the aircraft is further obtained through the geometric relationship and the current altitude of the aircraft in the process of continuous descent approach,and the mathematical formula is deduced.After the derivation,the algorithm model is established through SCADE SUITE,and the model is simulated.The results show that this method can accurately calculate the aircraft position deviation during the approach process and meet the accuracy requirements,and achieves the expected results.

关 键 词：高级进近 连续下降进近 位置偏差 SCADE SUITE 

分 类 号：V355[航空宇航科学与技术—人机与环境工程]