| GPS观测时间选取对控制网平面精度的影响 |
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| 引用本文： | 夏开旺,田林亚.GPS观测时间选取对控制网平面精度的影响[J].工程勘察,2012(11):68-70. |
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| 作者姓名： | 夏开旺 田林亚 |
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| 作者单位： | [1]安徽建筑工业学院土木工程系,合肥230601 [2]河海大学测量工程系,南京210098 |
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| 摘 要： | 结合桥梁GPS B级控制网实例,选择具有代表性的跨江基线为研究对象,对连续24h的观测数据进行整体和分段基线解算与分析,进而选择较好的观测时段进行二维平差计算和比较。研究表明,选择较好的观测时段和较短的观测时间,同样可以达到较高的基线精度和平面精度,对合理安排GPS网复测和提高工作效率有一定的参考价值。
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| 关 键 词： | GPS观测时间 分段解算 基线精度 平面精度 |
The influence of GPS observation time period on plane precision of control network |
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| Xia Kaiwang,Tian Linya.The influence of GPS observation time period on plane precision of control network[J].Geotechnical Investigation & Surveying,2012(11):68-70. |
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| Authors: | Xia Kaiwang Tian Linya |
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| Affiliation: | 1.Department of Civil Engineering,Anhui Structure Industry College,Hefei 230601,China;2.Department of Survey Engineering,Hohai University,Nanjing 210098,China) |
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| Abstract: | Based on the GPS B level control network of a bridge,some representative crossing-river baselines are chosen for studying,24 hours GPS observation data are processed as a whole and as different segments respectively,so as to select better observation time period for taking plane adjustment.The results show that selection of better and shorter observation time period can achieve similar results as the whole observation.This conclusion has a certain reference value for appropriate arrangement of repetition observation of GPS network and can improve work efficiency. |
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| Keywords: | GPS observation time segment calculation precision of baseline plane precision |
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