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复杂环境下的GPS/BDS/GLONASS结合的单频RTK定位性能研究
Performance study of GPS/BDS/GLONASS integrated single frequency RTK in complex urban environments
 [PDF]

马 丹,徐 莹,鲁 洋,吴 昊,毛艳玲,王 策
MA Dan
,XU Ying,LU Yang,WU Hao,MAO Yanling,WANG Ce

- , 2017,
Abstract: 为考察GPS/BDS/GLONASS结合的单频RTK定位模式在复杂城市环境下的定位优势,该文在香港采集一个参考站和7个流动站的GNSS数据,通过LAMBDA模糊度搜索方法和R-ratio检验得到单系统、双系统、多系统GNSS单频RTK的定位精度,分析在复杂观测环境下不同系统单频RTK定位性能.结果表明:1)在良好的观测条件下,多系统定位精度最高,双系统次之,单系统最差,都能达到厘米级的定位精度;2)在复杂环境下,部分单系统单频RTK很难实现双差定位,总体上双系统比单系统定位精度高,GLONAS+BDS的定位精度最差,但都难以实现高精度定位;3)多系统单频RTK可定位精度最高,可用于高精度的城市导航定位;4)观测环境与GNSS单频RTK定位精度具有明显的相关性.
BDS与GPS、GLONASS多模融合导航定位时空统一  [PDF]
李鹤峰,党亚民,秘金钟,阳凡林
大地测量与地球动力学 , 2013,
Abstract: ?给出北斗卫星导航系统(BDS)、GPS、GLONASS三系统间时空统一的转换模型和转换参数,提出GNSS多模融合导航定位时空统一转换方法,并基于VisualC++平台编写多模融合定位程序,用实测BDS/GPS/GLONASS数据进行定位解算,实验验证了时空统一转换方法的正确性;得出多模融合定位精度高,可靠性好的结论。
gps/bds的ptk定位算法研究  [PDF]
王世进,秘金钟,李得海,祝会忠
武汉大学学报(信息科学版) , 2014,
Abstract: ?目的针对附加模糊度参数的kalman滤波函数模型和随机模型,提出了一种确定实时动态(real-timekine-matic,rtk)定位中kalman滤波参数的方法。利用该算法,采用自编的gps/bdsrtk定位程序处理了实测的gps/bds短基线数据,对比和分析了gps、bds、gps/bds三种rtk定位组合模式下的定位精度水平。在短基线的情况下,gps/bds的rtk定位精度相对于gps或者bds没有明显提高,但是得到固定解所需的时间明显减少。
GPS-RTK在矿区沉降监测中的应用  [PDF]
鲍金杰,汪云甲
煤炭工程 , 2012,
Abstract: 文章首先提出GPS-RTK已经得到广泛应用,然后对GPS-RTK与全站仪精度的进行分析,得出GPS-RTK在矿区形变监测中具有一定的优势。通过实验来验证GPS-RTK与全站仪在矿区形变监测的数据,可知二者的监测数据具有很高的一致性。因此GPS-RTK在矿区沉降监测中具有广阔的应用前景。
Can RTK GPS be Used to Improve Cadastral Infrastructure?  [cached]
Volker Janssen,Thomas Grinter,Craig Roberts
Engineering Journal , 2011, DOI: 10.4186/ej.2011.15.1.43
Abstract: Cadastral surveying is concerned with the process of gathering evidence in the form of position information that is used to define the location of objects or land boundaries for the purposes of identifying ownership and/or the value of land parcels. The advent of Global Navigation Satellite Systems (GNSS), such as the Global Positioning System (GPS), has revolutionised the way 3-dimensional positions are determined and GPS surveying techniques, particularly Real Time Kinematic (RTK), are increasingly being adopted by cadastral surveyors. This paper presents a methodology for using RTK GPS observations to improve the existing cadastral survey control infrastructure, based on an extensive survey carried out in New South Wales, Australia. It is shown that accuracies (RMS) of 11 mm in the horizontal and 34 mm in the vertical component (1?) can be achieved for this dataset. Calculated bearings and distances agree very well with the official values derived from the state’s survey control database, easily meeting accuracy specifications and survey regulation requirements. 55% of the unestablished marks surveyed were able to be upgraded to cadastral survey control quality. Enhancements in the GPS survey design would have enabled an even higher percentage of marks to be classified as established, showing that the RTK GPS technique is well suited to improving survey control infrastructure for cadastral surveyors.
RTK-GPS动态定位精度测试研究  [PDF]
秦世伟,谷川,潘国荣
大地测量与地球动力学 , 2008,
Abstract: ?测试了RTKGPS动态定位的背景噪声;设计直线运动、正弦运动与圆圈运动方式下3种模拟运动装置,并测试了这3种运动模式下RTKGPS的定位精度和效果。测试结果表明,设计的RTKGPS精度测试方法能比较直观地了解RTKGPS的定位精度和优越性。
基于BDS/GPS组合定位的部分模糊度固定效果分析
Performance Assessment of Partial Ambiguity Resolution Based on BDS/GPS Combined Positioning
 [PDF]

舒宝, 刘晖, 张晋升, 潘国富, 蒋军
SHU Bao
, LIU Hui, ZHANG Jinsheng, PAN Guofu, JIANG Jun

- , 2017, DOI: 10.13203/j.whugis20150017
Abstract: 多系统组合有利于提高卫星导航定位的精度及可靠性,然而对于载波差分定位由于模糊度维数的陡增、观测噪声、大气残余误差等原因用传统的Lambda方法很难得到所有模糊度的固定解,采用部分模糊度方法固定最优的模糊度子集则相对容易。总结了现有的部分模糊度固定方法,分析了不同方法的特点,并用实测数据分析了BDS/GPS组合动态定位时部分模糊度固定的效果。实验结果表明,部分模糊度方法可以显著提高模糊度固定时的成功率及Ratio值,并且可以缩短RTK定位时的初始化时间,加快坐标的收敛速度,提高组合系统动态定位结果的精度
RESEARCH ON ACCURACY TEST OF RTK-GPS DYNAMIC POSITIONING
RTK-GPS动态定位精度测试研究

Qin Shiwei,Gu Chuan,Pan Guorong,
秦世伟
,谷川,潘国荣

大地测量与地球动力学 , 2008,
Abstract: Background noise of RTK-GPS is tested.Three movement simulation equipments are designed,which are linear movement,sinusoidal movement and circular movement.Positioning accuracy and effects of RTK-GPS under three movement patterns are tested.Test results indicate that the test methods designed can make the positioning accuracy and advantages of RTK-GPS understood directly,which has certain positive significance for extending the application of RTK-GPS in dynamic monitoring of large-scale engineering buildings and natural disasters.
BDS/GPS联合定轨的贡献分析
Contribution Analysis of BDS/GPS Combined Orbit Determination
 [PDF]

张睿, 杨元喜, 张勤, 黄观文, 王乐, 燕兴元, 瞿伟
ZHANG Rui
, YANG Yuanxi, ZHANG Qin, HUANG Guanwen, WANG Le, YAN Xingyuan, QU Wei

- , 2017, DOI: 10.13203/j.whugis20150081
Abstract: 北斗卫星导航系统(BeiDou satellite navigation system, BDS)目前暂未具有全球导航定位能力,卫星轨道的全程跟踪与测站的几何结构还不完善,影响了卫星轨道的测定精度。针对上述问题,根据动力学定轨的原理与方法,推导了多个全球导航卫星系统(global navigation satellite system, GNSS)联合定轨对参数求解精度的解析贡献量,并利用实测数据分析了BDS/GPS联合定轨对轨道和钟差求解精度的统计贡献量。结果表明,联合定轨对系统间公共参数求解精度的贡献显著,除地球静止轨道(geostationary orbit, GEO)卫星外,其余轨道和钟差求解精度均有显著提高。BDS/GPS联合定轨对BDS卫星轨道、卫星钟差均方根误差(root mean square, RMS)以及接收机钟差RMS的统计贡献量分别为36.21%、26.88%和20.88%,其中对可视卫星数较少的区域接收机钟差求解精度的贡献尤为显著,贡献量为45.95%
Multipath Comparison for GPS Observation MASS Station Data and RTK Station
Mardina Abdullah,Norbahiah Misran,Nor Nadira M. Ariff,M. Fazrin Abdullah
Jurnal Kejuruteraan , 2010,
Abstract: Multipath is one of the major sources of error in GPS code and carrier phase measurements that prevents the achievement of the highest levels of accuracy in GPS applications. Multipath occurs when signals travelling from a transmitter to a receiver propagate via multiple paths due to reflection and diffraction. The aim of this paper is to analyze the effect of multipath between MASS (Malaysia Active GPS System) station and GPS RTK (GPS Real Time Kinematic) reference station. The data is analysed from 15 MASS stations and 27 GPS RTK reference stations that are strategically located throughout Malaysia. This research also identifies which station between MASS station and GPS RTK reference stations are the most and least affected by multipath effect of both pseudo ranges at L1 (1575.42 MHz) and L2 (1227.60 MHz) of GPS signals. TEQC (Translating, Editing and Quality Checking) software is used to obtain multipath errors for both GPS signals. Based on the results, it is shown that the multipath error effects highly affect pseudo ranges for carrier frequency L2 more than the carrier frequency L1 which is consistent with previous research findings. It is shown that the most affected GPS data for multipath at L1 is from GPS RTK reference station and the least is from MASS station. The most affected at L2 is from MASSstation and the least from GPS RTK reference station. For further research, more data are needed to be analyzed and better methods are required to analyze GPS data
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