GPS控制测量已知点检校的两种方法
Two Methods for Known Points Calibration in GPS Control Survey
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- 引用格式:
-
刘丽,吕继书.GPS控制测量已知点检校的两种方法[J].天然气与石油,2016,34(1):0.doi:
Liu Li, Lü Jishu.Two Methods for Known Points Calibration in GPS Control Survey[J].Natural Gas and Oil,2016,34(1):0.doi:
- DOI:
- 作者:
- 刘丽 吕继书
Liu Li, Lü Jishu
- 作者单位:
- 中国石油集团工程设计有限责任公司西南分公司
China Petroleum Engineering Co., Ltd. Southwest Company
- 关键词:
- GPS；控制测量；已知点；边长比较法；约束平差分析法
GPS; Control survey; Known point; Side length comparison; Constraint adjustment method
- 摘要:
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GPS控制测量中，为得到高精度的测量成果，重要的一步是对拟采用的已知点进行必要的检校。介绍了GPS控制网已知点检校的两种方法，即边长比较法和约束平差分析法，阐述了两种方法的具体操作步骤及计算过程，分析了两种方法的使用原则，即根据已知点的多少进行选择，在已知点少的情况下宜选择边长比较法，在已知点多的情况下宜选择约束平差分析法。约束平差分析法也适用于已知高程点的检校，另外，在进行GPS控制测量时，应收集尽可能多的已知点。
In order to obtain measurement results with high accuracy, it is necessary to calibrate known points. Introduced are such two methods for calibrating known points in GPS control network as side length calibration method and constraint adjustment method. Any one can be selected from the two methods autonomously according to known points and the constraint adjustment method is also applicable to the known elevation point calibration. In addition, known points shall be collected as much as possible during GPS control Survey.
