This paper analyzes the components and features of GPS, discusses differential dynamic positioning technology with GPS in real time and its error sources.
分析了全球定位系统GPS的组成及功能，探讨了GPS实时差分动态定位技术及其误差来源。
The major error source of GPS systems, especially of differential GPS, is the multipath signals. It will deteriorate the precision of positioning.
GPS测量，尤其是差分GPS测量，多径信号是主要的误差来源，会引起定位精确度的恶化。
For the test requirement of precision agriculture, differential systems of GPS position were adopted to increase the position accuracy of GPS system.
为了精准农业技术示范试验需要，采用了GPS定位差分系统，以提高GPS系统定位精度。
This paper studies the orbit determination of LEO satellites using GPS receivers of single frequency in condition of not depending on GPS differential reference stations.
研究在不依赖于GPS差分基准站的情况下，利用单频gps接收机对低轨卫星进行定轨的算法。
The application of differential GPS in grain production figure shows that differential GPS technology can meet the need of grain production estimate.
差分GPS在谷物产量图生成中的应用表明，差分GPS技术能满足田间谷物测产的需要。
To meet the requirement of precise GPS positioning in vehicle management system, and also to consider the development in the future, this paper introduces differential GPS projects.
为了适应现时特种车辆管理系统对车辆GPS定位的精度的需要，并考虑到未来的发展趋势，对差分gps方案进行了介绍。
Underwater GPS positioning system includes four parts which are GPS differential reference station, GPS buoy subsystem, underwater pinger, ship-based data processing and control center.
差分gps水下立体定位系统包括GPS差分基准站、GPS浮标、水下收发机、船基控制中心四部分。
Using GPS observation data from differential GPS reference stations, several errors, which can't modeled, were solved and sent to user around these reference station.
局域差分gps认为在距离参考站较近的区域内，观测误差具有相关性。参考站将观测量与理论值之差作为差分改正数发送给用户进行差分改正。
The GPS satellite measurement model is given, the error source is analyzed, and the differential technology is derived so as to improve the GPS precision.
给出了GPS卫星测量模型，分析误差源，并推导出差分值，以便提高GPS的精度。
The GPS satellite measurement model is given, the error source is analyzed, and the differential technology is derived so as to improve the GPS precision.
给出了GPS卫星测量模型，分析误差源，并推导出差分值，以便提高GPS的精度。
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