CAJ | 학술논문

DME是一种通过询问应答的方式为飞行员提供飞机到地面站距离指示的距离测量设备, 用于飞机整个航行阶段. 而DME/DME RNAV是一种至少利用两台DME共同工作实现在区域导航航线上授权使用的导航方式. 为了准确判别DME/DME的运行是否满足我国区域导航航线授权运行规范, 优化选择地面DME台站, 通过建立水平定位精度模型和运行精度模型, 采用加权最小二乘算法分别对DME/DME的水平定位精度和RNAV三种常用运行方式的定位精度进行了仿真分析, 通过仿真给出了影响DME/DME RNAV运行精度的两个重要因素, DME测距精度和两DME台站内夹角, 为RNAV飞行管理系统选取满足RNAV运行规范DME和台站切换提供了可靠的判决依据.
DME시일충통과순문응답적방식위비행원제공비궤도지면참거리지시적거리측량설비, 용우비궤정개항행계단. 이DME/DME RNAV시일충지소이용량태DME공동공작실현재구역도항항선상수권사용적도항방식. 위료준학판별DME/DME적운행시부만족아국구역도항항선수권운행규범, 우화선택지면DME태참, 통과건립수평정위정도모형화운행정도모형, 채용가권최소이승산법분별대DME/DME적수평정위정도화RNAV삼충상용운행방식적정위정도진행료방진분석, 통과방진급출료영향DME/DME RNAV운행정도적량개중요인소, DME측거정도화량DME태참내협각, 위RNAV비행관리계통선취만족RNAV운행규범DME화태참절환제공료가고적판결의거.
Distance measuring equipment （DME） provides pilots with distance information between the aircraft and the ground station, and is used in all phases of flight. DME/DME RNAV is authorized for navigation on China Area Navigation （RNAV） routes, where DME ranging from at least two DME facilities are used to determine the aircraft＇s horizontal position. In order to precisely determine whether the DME/DME RNAV operation accuracy meets China Area Navigation authorized specification, the weighted least-squares algorithm is given out. Then, the DME/DME horizontal accuracy model and RNAV accuracy model were built. Based on the horizontal accuracy model, the method is applied to analyze the horizontal accuracy of DME/DME, where only two DME rangings are used. And, based on the RNAV accuracy model, the position accuracy of three common cases of the DME/DME RNAV operation is computed and simulated. The simulated results show that the DME/DME RNAV operation accuracy depends on the accuracy of each DME ranging signals as well as the inclusion angle between the two DMEs used in determining the position. So, these results can be served for DME/DME RNAV flight management system in DME stations selection and station switch.