| 基于矿区GPS网投影带和投影面的合理选择 |
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| 引用本文： | 孙金礼,周志富,杨莉.基于矿区GPS网投影带和投影面的合理选择[J].辽宁工程技术大学学报(自然科学版),2008,27(5). |
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| 作者姓名： | 孙金礼 周志富 杨莉 |
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| 作者单位： | 山西大同大学工学院,山西,大同,037003 |
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| 摘 要： | 针对许多矿区远离国家3°带中央子午线或是地势较高,造成GPS控制网的边长尺度与开采水平以及地面实际测量的边长尺度不相一致,产生长度投影变形,从而使其成果不能满足1:500比例尺测图和施工放样以及巷道贯通的精度要求这一重要的技术问题.从理论上分析了将实测边长归算到参考椭球面上和将参考椭球面上的边长归算到高斯投影面上的长度变形影响规律,讨论限制和减小这种投影变形影响的理论方法.提出了合理选择投影带和投影面的具体方案,并以大同矿区GPS网平面坐标系统建立中投影带和投影面的选择实例验证了该方法在实际应用中是切实可行的.
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| 关 键 词： | GPS网 投影带 投影面 投影变形 长度变形 |
Rational choosing of projection zone and perspective plane based on GPS network of mining area |
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| SUN Jinli,ZHOU Zhifu,YANG Li.Rational choosing of projection zone and perspective plane based on GPS network of mining area[J].Journal of Liaoning Technical University (Natural Science Edition),2008,27(5). |
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| Authors: | SUN Jinli ZHOU Zhifu YANG Li |
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| Institution: | SUN Jinli,ZHOU Zhifu,YANG Li(Engineering School of Shanxi Datong University,Datong 037003,China) |
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| Abstract: | Lots of mining areas are far away from the national zone dividing prime meridians of three degree or located on high relief,which results in the fact that the side lengths of GPS control network is at variance with mining levels and the actual ground measures.Then it brings length projection distortion and makes the product of the network fail to meet the precision level of one to five hundred scale plotting,construction layout and laneway breakthrough.The paper analyzes theoretically the influence law of l... |
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| Keywords: | GPS network projection zone perspective plane projection distortion length distortion |
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