毕业论文(本科生)中文标题多卫星导航系统的组合导航技术研究英文标题TheStudyofTechnologyinTheCombinedSatellite学生姓名张三指导教师梅中磊学院信息科学与工程学院专业基地班(电信方向)年级2005级兰州大学教务处金玲多卫导组合导航研究i诚信责任书本人郑重声明:本人所呈交的毕业论文(设计),是在导师的指导下独立进行研究所取得的成果。毕业论文(设计)中凡引用他人已经发表或未发表的成果、数据、观点等,均已明确注明出处。除文中已经注明引用的内容外,不包含任何其他个人或集体已经发表或在网上发表的论文。特此声明。论文作者签名:日期:金玲多卫导组合导航研究ii目录第一章绪论........................................................................................................................................................11.1课题来源及意义....................................................................................................................................11.2各卫星导航系统的发展现状及展望.....................................................................错误!未定义书签。1.3论文的研究内容及结构安排................................................................................................................2第二章组合导航系统仿真平台........................................................................................................................32.1导航空间常用坐标系及其转换.............................................................................错误!未定义书签。2.2星座模型仿真.........................................................................................................错误!未定义书签。2.3伪距误差修正模型.................................................................................................错误!未定义书签。2.4本章小结...........................................................................................................错误!未定义书签。第三章多卫导系统组合导航定位原理.............................................................................错误!未定义书签。3.1GPS伪距测量.........................................................................................................错误!未定义书签。3.2GPS伪距测量定位原理.........................................................................................错误!未定义书签。3.3组合系统的定位原理.............................................................................................错误!未定义书签。第四章单系统和组合系统DOP仿真及精度分析...........................................................错误!未定义书签。4.1精度因子(DOP)的定义.....................................................................................错误!未定义书签。4.2DOP计算和仿真....................................................................................................错误!未定义书签。4.3定位精度分析.........................................................................................................错误!未定义书签。4.4本章小结.................................................................................................................错误!未定义书签。第五章选星算法.................................................................................................................错误!未定义书签。5.1传统选星算法........................................................................................................错误!未定义书签。5.2最佳选星法确定组合系统定位时所需选星数目................................................错误!未定义书签。5.3所选卫星的分布规律............................................................................................错误!未定义书签。5.4快速选星算法........................................................................................................错误!未定义书签。5.5选星算法减少的计算量的统计............................................................................错误!未定义书签。5.5本章小结.................................................................................................................错误!未定义书签。结论....................................................................................................................................................................4附录一星座仿真参数表....................................................................................................................................5附录二最小二乘方算法推导............................................................................................................................6参考文献..............................................................................................................................................................7致谢....................................................................................................................................................................8金玲多卫导组合导航研究iii多卫星导航系统的组合导航技术研究摘要随着中欧伽利略计划的实施,卫星导航将从GPS时代向GNSS(全球卫星导航系统)时代转变,形成GPS、GALIEO和其他系统(如GLONASS、BD)的多系统并存的局面,多卫星导航系统的组合导航将成为一个必然趋势。关键词:组合导航伪距误差校正精度因子最小二乘算法快速选星算法金玲多卫导组合导航研究ivTheStudyofTecnologyInTheCombinedSatelliteNavigationSystemABSTRACTWithGALILEOplanofMiddleEuropebeingactualized,satellitenavigationwillchangefromtheageofGPStotheageofGNSS(GlobalNavigationSatelliteSystem),thesituationthattheGPS、GALILEOandothersystems(suchasGLONASS、BD)concurrentlyexisthasbeenformed.Asaresult,thecombinedsatellitesystemnavigationwillbeaninevitabletrend.Keywords:CombilednavigationPseudorangeerrorcorrectionDOPLeastsquaremethordFastsatellite-selectingalgorithm金玲多卫导组合导航研究1第一章绪论1.1课题来源及意义本课题来源于国家高技术研究发展计划(863计划):“新一代国家空中交通管理系统”领域,课题名称为“航空多传感器组合导航技术”[1]。金玲多卫导组合导航研究2表1.1GPS/GLONASS/GALIELO/BD2卫星系统的比较卫星参数GPSGLONASSGALILEOBD2轨道面数6334每轨道卫星个数4895、3/2、2轨道倾斜角055064.80560000056/5555、、轨道高度20200km19130km23616km36000km/21500km运行周期11小时58分11小时15分14小时4分24小时/12小时制式CDMAFDMACDMACDMA射电频率1575.42MHz1227.60MH