| 多源GIS高斯投影快速换带算法研究 |
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| 引用本文： | 王晏民.多源GIS高斯投影快速换带算法研究[J].测绘工程,2002,11(1):8-13. |
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| 作者姓名： | 王晏民 |
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| 作者单位： | 黑龙江工程学院测绘工程系,黑龙江哈尔滨,150008 |
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| 摘 要： | 说明快速换带在多源GIS中的重要作用。介绍正反算法，正形变换法，仿射变换法和相似变换法等4种坐标变换算法，发现并改正文献5]中的公式错误，从控制点个数，误差分布和速度等方面考虑，用正形变换法，仿射变换法和相似变换法进行了对比研究，找出一种最适合快速换带的算法-相似变换法，在研究中发现正形变换法在进行高斯投影换带时既有精度最佳区域又有精度异常区域存在。
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| 关 键 词： | 多源GIS 高斯投影 快速换带 正形变换 仿射变换 相似变换 地理信息系统 |
| 文章编号： | 1006-7949(2002)01-0008-06 |
Research on Quick Band-change algorithm of Gauss Projection for Multi-source GIS |
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| WANG Yan-min.Research on Quick Band-change algorithm of Gauss Projection for Multi-source GIS[J].Engineering of Surveying and Mapping,2002,11(1):8-13. |
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| Authors: | WANG Yan-min |
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| Abstract: | The significant roles of quick band-change in multi-source GIS are illustrated.4algorithms such as positive and negative computing,shape-maintained transformation,affine transformation and similar transformation are presented.A formula mistake in literatur5is found and corrected.Compar-ative analysis is taken out with shape-maintained transformation,affine transformation and similar trans-formation in details of control point amount,error distribution and computing velocity.At last,the best qukck band-change algorithm is found out as similar transformation.The fact,that when the shape-maintained equation being used to change band of Gauss Projection there exists the best precision area as well as precision abnormal area,is discovered. |
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| Keywords: | Multi-source GIS Gauss projection Quick band-exchange Shape-maintained transfor-mation Affine transformation Similar transformation |
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