| 精密单点定位在国土调查正射影像底图生产中的应用研究 |
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| 引用本文： | 张德成,常军,程小凯,方征,杨盼.精密单点定位在国土调查正射影像底图生产中的应用研究[J].测绘与空间地理信息,2021,44(4):20-23. |
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| 作者姓名： | 张德成 常军 程小凯 方征 杨盼 |
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| 作者单位： | 自然资源部第一大地测量队,陕西 西安710054 |
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| 摘 要： | 精密单点定位技术作为一种快速获取像控点坐标的方法,不需要同步联测,可在大面积正射影像生产中发挥重要作用。通过对不同时段长度观测数据的精密单点定位和ITRF2014框架瞬时历元坐标向CGCS2000坐标转换两个方面的探讨,分析了精密单点定位技术进行像控点测量并实现正射影像生产的关键问题。结果表明:以60 min观测时长数据进行精密单点定位,并利用框架转换参数和格网速度场实现像控点CGCS2000坐标获取的最大点位误差为0.38 m,可以满足国土调查1∶10 000比例尺正射影像底图生产像控点测量精度要求。
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| 关 键 词： | 精密单点定位 像控点 CGCS2000 框架转换 正射影像 |
Research on the Application of PPP in the DOM Production of Land Survey Basemaps |
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| ZHANG Decheng,CHANG Jun,CHENG Xiaokai,FANG Zheng,YANG Pan.Research on the Application of PPP in the DOM Production of Land Survey Basemaps[J].Geomatics & Spatial Information Technology,2021,44(4):20-23. |
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| Authors: | ZHANG Decheng CHANG Jun CHENG Xiaokai FANG Zheng YANG Pan |
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| Institution: | (The First Geodetic Surveying Brigade of MNR,Xi′an 710054,China) |
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| Abstract: | PPP technology plays an important role in the production of large-area DOM as a fast method to obtain the coordinates of photo control point.And it does not require simultaneous measurement.This paper discussed PPP with different observation period length data and conversion of the instantaneous epoch coordinates of ITRF2014 to CGCS2000 coordinates.Based on the discussion of two aspects,the key issues of the PPP technology used to implement photo control point measurement and DOM production are analyzed.The results show that the maximum point error obtained is 0.38 m by using the 60 min observation data with PPP technology,frame conversion parameters and grid velocity field,which can meet the measurement requirements of photo control pointon 1∶10000 DOM production. |
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| Keywords: | PPP photo control point CGCS2000 frame conversion DOM |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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