| SA取消前后RBN—DGPS系统精度评估与分析 |
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| 引用本文： | 林长川.SA取消前后RBN—DGPS系统精度评估与分析[J].中国航海,2001(2):20-26. |
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| 作者姓名： | 林长川 |
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| 作者单位： | 林长川（集美大学,福建,厦门,361021） |
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| 基金项目： | 福建省自然科学基金项目资助(A0110016) |
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| 摘 要： | 在取消SA前后，对GPS、RBN－DGPS的陆地静态定点定位进行实测、统计与分析，重点对RBN－DGPS基准站的伪距改正量残差、经纬度残差等数据进行了大量的实测与传统，并在此基础上，统计了SV、HDOP、VDOP、PDOP、2DRMS的概率。采用回归分析的数学方法，建立了RBN－DGPS用户定位精度随基准站距离变化的数学模型。对我国GPS、RBN－DGPS系统的应用与开发，具有一定的参考价值。
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| 关 键 词： | 选择可用性 定位精度 概率 回归分析 RBN－DGPS系统 评估 船舶 航行安全 SA |
| 文章编号： | 1000-4653(2001)02-0020-07 |
| 修稿时间： | 2001年6月2日 |
Evaluation and Analysis of the Precision of RBN-DGPS before and after Canceling SA |
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| LIN Chang,chuan.Evaluation and Analysis of the Precision of RBN-DGPS before and after Canceling SA[J].Navigation of China,2001(2):20-26. |
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| Authors: | LIN Chang chuan |
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| Abstract: | The measurements, statistics and analysis of static land fixed positioning with GPS and RBN DGPS in the case before and after canceling SA were carried out. It was emphasized to make numerous measurements and statistics of the resident errors of pseudo range correction, range rate correction, the latitude and longitude of RBN DGPS reference station. from these, the statistic of the probability of SV, HDOP, VDOP, PDOP and 2DRMS were also carried out. By using mathematical method of regression analysis a mathematical model of the relationship between customer's positioning accuracy and its distance from refrence station is established. It may be valuable for the reference of the development and application of GPS and RBN DGPS in China. |
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| Keywords: | Selective Availability(SA) Positioning Accuracy Probability Regression Analysis |
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