Android移动终端单频BDS/GPS实时PPP技术研究
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摘要
针对Android移动终端定位精度较差的问题,该文对Android框架结构进行了研究,提出了基于Android移动终端实时BDS/GPS双系统精密单点定位(PPP)方法。利用Android studio 2.2.2、Java语言及JNI技术,对终端GNSS驱动进行开发,成功通过串口读取北斗移动终端RTCM MSM4原始卫星观测数据,并在硬件抽象层进行网络实时差分数据解析、文件读取和输出,最终实现增强定位。在移动终端上运行BDS/GPS实时PPP软件,分析定位结果显示双系统单频精密单点定位精度N、E方向0.6m左右,U方向1.5m左右。
Aming at the low positioning accuracy for Android mobile terminal,the Android frame structure was studied,and the precise point positioning(PPP)method for BDS/GPS single-frequency based on the Android mobile terminal was proposed in this paper.The terminal GNSS driver was developed by using the Android studio 2.2.2,JAVA and JNI technology,and the original satellite observation data of the mobile terminal RTCM MSM4 was read successfully through the serial port,and the network real time differential data analysis,file reading and output were carried out in the hardware abstraction layer and PPP was realized.On the mobile terminal,dual-system single-frequency PPP accuracy at Nand Edirection was about 0.6 m respectively,and at Udirection was about 1.5 mby the BDS/GPS real-time PPP software.
Aming at the low positioning accuracy for Android mobile terminal,the Android frame structure was studied,and the precise point positioning(PPP)method for BDS/GPS single-frequency based on the Android mobile terminal was proposed in this paper.The terminal GNSS driver was developed by using the Android studio 2.2.2,JAVA and JNI technology,and the original satellite observation data of the mobile terminal RTCM MSM4 was read successfully through the serial port,and the network real time differential data analysis,file reading and output were carried out in the hardware abstraction layer and PPP was realized.On the mobile terminal,dual-system single-frequency PPP accuracy at Nand Edirection was about 0.6 m respectively,and at Udirection was about 1.5 mby the BDS/GPS real-time PPP software.
引文
[1]毕京学,甄杰,郭英.Android手机GPS和A-GPS定位精度分析[J].测绘通报,2016(7):10-13.(BI Jingxue,ZHEN Jie,GUO Ying.Accuracy of GPS and A-GPSpositioning on Android phone[J].Bulletin of Surveyingand Mapping,2016(7):10-13.)
[2]董超.基于Android的手机定位服务系统设计[D].哈尔滨:哈尔滨理工大学,2013.(DONG Chao.Design ofmobile positioning service system based on Android[D].Harbin:Harbin University of Science andTechnology,2013.)
[3]王振丽.Android底层开发技术实战详解:内核、移植和驱动[M].2版.北京:电子工业出版社,2015:81-95.(WANG Zhenli.Detailed introduction of underlyingdevelopment technology under Android system:kernel,migration,and driver[M].2nd ed.Beijing:PublishingHouse of Electronics Industry,2015:81-95.)
[4]邓凡平.深入理解Android:Wi-Fi、NFC和GPS卷[M].北京:机械工业出版社,2014:207-244.(DENGFanping.Thorough understanding of Androiod:Wi-Fi,NFC and GPS[M].Beijing:China Machine Press,2014:207-244.)
[5]Federal Agency for Cartography And Geodesy(BKG).BKG Ntrip PClient(BNC)Version 2.7 manual[M].Frankfurt,Germany:[s.n.],2012.
[6]刘志强,王解先.广播星历SSR改正的实时精密单点定位及精度分析[J].测绘科学,2014,39(1):15-19,109.(LIU Zhiqiang,WANG Jiexian.Realization andanalysis of real-time precise point positioning based onSSR broadcast ephemeris corrections[J].Science ofSurveying and Mapping,2014,39(1):15-19,109.)
[7]霍星亮,袁运斌,欧吉坤,等.基于GPS资料研究中国区域电离层TEC的周日变化、半年度及冬季异常现象[J].自然科学进展,2005,15(5):626-630.(HUOXingliang,YUAN Yunbin,OU Jikun,et al.Study onthe abnormal changes of the ionospheric TEC in Chinain the daily,half year,and winter based on GPS data[J].Progress in Natural Science,2005,15(5):626-630.)
[8]韩吉德,王祖顺,王春青.全球电离层时空变化特性分析[J].测绘地理信息,2012,37(6):26-29.(HAN Jide,WANG Zushun,WANG Chunqing.Analysis of temoraland spatial change in global ionosphere[J].Journal ofGeomatics,2012,37(6):26-29.)
[9]汪平,许家琨,沈国康,等.格网电离层模型在单频精密单点定位中的应用[J].测绘科学技术学报,2010,27(5):337-340.(WANG Ping,XU Jiakun,SHENGuokang,et al.Application of grid ionospheric modelin single-frequency precise point positioning[J].Journal of Geomatics Science and Technology,2010,27(5):337-340.
[10]王彬,刘经南,隋心.BDS与GPS群延迟的异同分析与应用[J].测绘科学,2015,40(10):142-145.(WANG Bin,LIU Jingnan,SUI Xin.Analysis and research of differencebetween BDS-TGD and GPS-TGD[J].Science of Surveyingand Mapping,2015,40(10):142-145.)
[11]胡丽乐,向泽华,胡焕校,等.顾及TGD与DCB改正的单点定位研究[J].全球定位系统,2014,39(6):15-18.(HU Lile,XIANG Zehua,HU Huanxiao,et al.Theresearch considering TGD and DCB corrections forsingle point positioning[J].GNSS World of China,2014,39(6):15-18.)
[12]祁芳.卡尔曼滤波算法在GPS非差相位精密单点定位中的应用研究[D].武汉:武汉大学,2003.(QI Fang.Research on Kalman filter algorithm in GPS precisepoint positioning using un-differenced phase[D].Wuhan:Wuhan University,2003.)
[13]李浩军,王解先,陈俊平,等.基于GNSS网络的实时精密单点定位及精度分析[J].地球物理学报,2010,53(6):1302-1307.(LI Haojun,WANG Jiexian,CHENJunping,et al.The realization and analysis of GNSSnetwork based real-time precise point positioning[J].Chinese Journal of Geophysics,2010,53(6):1302-1307.)
[14]LE A Q,TIBERIUS C.Single-frequency precise pointpositioning with optimal filtering[J].GPS Solutons,2007,11(11):61-69.
[15]LE A Q,TEUNISSEN P J G.Recursive least-squaresfiltering of pseudorange measurements[C]∥Proceedingsof the European Navigation Conference,2006[2018-01-07].http:∥gnss.curtin.edu.au/wp-content/uploads/sites/21/2016/04/Le2006Recursive.pdf.
[2]董超.基于Android的手机定位服务系统设计[D].哈尔滨:哈尔滨理工大学,2013.(DONG Chao.Design ofmobile positioning service system based on Android[D].Harbin:Harbin University of Science andTechnology,2013.)
[3]王振丽.Android底层开发技术实战详解:内核、移植和驱动[M].2版.北京:电子工业出版社,2015:81-95.(WANG Zhenli.Detailed introduction of underlyingdevelopment technology under Android system:kernel,migration,and driver[M].2nd ed.Beijing:PublishingHouse of Electronics Industry,2015:81-95.)
[4]邓凡平.深入理解Android:Wi-Fi、NFC和GPS卷[M].北京:机械工业出版社,2014:207-244.(DENGFanping.Thorough understanding of Androiod:Wi-Fi,NFC and GPS[M].Beijing:China Machine Press,2014:207-244.)
[5]Federal Agency for Cartography And Geodesy(BKG).BKG Ntrip PClient(BNC)Version 2.7 manual[M].Frankfurt,Germany:[s.n.],2012.
[6]刘志强,王解先.广播星历SSR改正的实时精密单点定位及精度分析[J].测绘科学,2014,39(1):15-19,109.(LIU Zhiqiang,WANG Jiexian.Realization andanalysis of real-time precise point positioning based onSSR broadcast ephemeris corrections[J].Science ofSurveying and Mapping,2014,39(1):15-19,109.)
[7]霍星亮,袁运斌,欧吉坤,等.基于GPS资料研究中国区域电离层TEC的周日变化、半年度及冬季异常现象[J].自然科学进展,2005,15(5):626-630.(HUOXingliang,YUAN Yunbin,OU Jikun,et al.Study onthe abnormal changes of the ionospheric TEC in Chinain the daily,half year,and winter based on GPS data[J].Progress in Natural Science,2005,15(5):626-630.)
[8]韩吉德,王祖顺,王春青.全球电离层时空变化特性分析[J].测绘地理信息,2012,37(6):26-29.(HAN Jide,WANG Zushun,WANG Chunqing.Analysis of temoraland spatial change in global ionosphere[J].Journal ofGeomatics,2012,37(6):26-29.)
[9]汪平,许家琨,沈国康,等.格网电离层模型在单频精密单点定位中的应用[J].测绘科学技术学报,2010,27(5):337-340.(WANG Ping,XU Jiakun,SHENGuokang,et al.Application of grid ionospheric modelin single-frequency precise point positioning[J].Journal of Geomatics Science and Technology,2010,27(5):337-340.
[10]王彬,刘经南,隋心.BDS与GPS群延迟的异同分析与应用[J].测绘科学,2015,40(10):142-145.(WANG Bin,LIU Jingnan,SUI Xin.Analysis and research of differencebetween BDS-TGD and GPS-TGD[J].Science of Surveyingand Mapping,2015,40(10):142-145.)
[11]胡丽乐,向泽华,胡焕校,等.顾及TGD与DCB改正的单点定位研究[J].全球定位系统,2014,39(6):15-18.(HU Lile,XIANG Zehua,HU Huanxiao,et al.Theresearch considering TGD and DCB corrections forsingle point positioning[J].GNSS World of China,2014,39(6):15-18.)
[12]祁芳.卡尔曼滤波算法在GPS非差相位精密单点定位中的应用研究[D].武汉:武汉大学,2003.(QI Fang.Research on Kalman filter algorithm in GPS precisepoint positioning using un-differenced phase[D].Wuhan:Wuhan University,2003.)
[13]李浩军,王解先,陈俊平,等.基于GNSS网络的实时精密单点定位及精度分析[J].地球物理学报,2010,53(6):1302-1307.(LI Haojun,WANG Jiexian,CHENJunping,et al.The realization and analysis of GNSSnetwork based real-time precise point positioning[J].Chinese Journal of Geophysics,2010,53(6):1302-1307.)
[14]LE A Q,TIBERIUS C.Single-frequency precise pointpositioning with optimal filtering[J].GPS Solutons,2007,11(11):61-69.
[15]LE A Q,TEUNISSEN P J G.Recursive least-squaresfiltering of pseudorange measurements[C]∥Proceedingsof the European Navigation Conference,2006[2018-01-07].http:∥gnss.curtin.edu.au/wp-content/uploads/sites/21/2016/04/Le2006Recursive.pdf.