DME/DME区域导航的导航台优选算法  

Optimized station selection algorithm for DME/DME RNAV

作　　者：沈笑云[1] 褚世超 焦卫东[1] 孟健[1] 

机构地区：[1]中国民航大学天津市智能信号和图像处理重点实验室,天津300300

出　　处：《中国民航大学学报》2014年第3期31-36,共6页Journal of Civil Aviation University of China

基　　金：国家自然科学基金项目(61079009);中央高校基本科研业务费专项(ZXH2009B008)

摘　　要：研究导航定位优化问题,由于传统导航选台算法中DME/DME导航台的频繁切换会严重影响定位精度和连续性,提出了一种区域导航航路阶段避免频繁切换的DME/DME导航台自动选择算法。通过分析DME导航台的信号覆盖范围,计算相邻航路点所使用的DME导航台的有效导航区域,改进了传统算法中的导航台切换准则;结合区域导航的要求及航路和周围DME导航台的信息,对区域导航航路阶段建立的DME导航台选择模型与传统算法结果在Matlab中进行对比和分析,并对所选的DME/DME区域导航性能进行了评估。以A593航路为例进行了仿真实验。仿真结果表明,改进算法能够选出一对更加合理的DME导航台,并且满足DME/DME区域导航的性能要求,在一定程度上提高了选台算法的稳定性。Given the low accuracy and continuity caused by the frequent modification based on traditional DME/DME station selection algorithm,an avoiding frequently modifying automated DME/DME station selection algorithm of DME/DME RNAV route is proposed.By analyzing the coverage area of DME stations and calculating the effective area of DME/DME contiguous waypoints selected,the modification criterion is improved.Combining with area navigation requirements and the information of flight path and DME stations around,comparison and analysis with traditional algorithm is performed using the Matlab models of DME/DME station selection.And then the performance of DME/DME （selected） RNAV is estimated.Finally,based on the information of A593,some simulation experiments are performed.The simulation results show that the algorithm selects a pair of more reasonable DME,and the algorithm can satisfy the requirements of the DME/DME RNAV performance,meanwhile the stability of the algorithm can be improved.

关 键 词：区域导航 测距机 导航台选择 导航性能 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] V351.37[自动化与计算机技术—计算机科学与技术]