| 可调节经线收敛度和经纬线间隔的伪圆柱投影 |
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| 引用本文： | 钟业勋,胡毓钜.可调节经线收敛度和经纬线间隔的伪圆柱投影[J].海洋测绘,2011,31(3):8-11. |
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| 作者姓名： | 钟业勋 胡毓钜 |
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| 作者单位： | 1. 广西测绘局,广西,南宁,530023;广西师范学院,资源与环境科学学院,广西,南宁,530001
2. 武汉大学,资源与环境科学学院,湖北,武汉,430079 |
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| 摘 要： | 令纬度ψ<,j>转换为ψ<,j>后,中央经线方程用一个ψ<,j>的7次幂方程表示,中央经线方程的系数关联着纬线间隔.令经度λ<,i>转换为ξ<,i>后,赤道方程用一个ξ<,i>的7次幂方程表示,赤道方程的系数关联着经线间隔.经线的收敛度由经线方程的收敛系数调节.由此构建可调节经线收敛度和经纬线间隔的伪圆柱投影.用一实例...
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| 关 键 词： | 伪圆柱投影 经线收敛度 中央经线方程 赤道方程 经线间隔 纬线间隔 变形计算 |
Pseudo-cylindrical Projection Constructed by Using Variable Meridian Convergence and Meridian-and-parallel Intervals |
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| ZHONG Ye-xun,HU Yu-ju.Pseudo-cylindrical Projection Constructed by Using Variable Meridian Convergence and Meridian-and-parallel Intervals[J].Hydrographic Surveying and Charting,2011,31(3):8-11. |
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| Authors: | ZHONG Ye-xun HU Yu-ju |
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| Institution: | 1.Guangxi Regional Bureau of Surveying and Mapping,Nanning,Guangxi,530023;2.School of Resource and Environment Science,Guangxi Teachers＇College,Nanning,Guangxi,530001;3.School of Resource and Environment Science,Wuhan University,Wuhan,Hubei,430079) |
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| Abstract: | Let the latitude φj transformming into ψj,the meridian equation is expressed by a seventh power equation of ψj.The coefficient of central meridian equation is linked with the parallel intervals.After the meridian λi transformming into ξi,the meridian equation is expressed by a seventh power equation of ξi.The coefficient of equator equation is linked with the meridian intervals.The meridian convergence is regulated by the meridian convergence coefficient.And thus a pseudo-cylindrical projection can be established with variable meridian convergence and meridian-and-parallel intervals. |
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| Keywords: | pseudo-cylindrical projection meridian convergence degree central meridian equation equator equation meridian interval parallel interval distortion computation |
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