| 太阳轨迹空间连续性的日照分析算法优化 |
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| 引用本文： | 张驰,李佳,周侗,陶菲.太阳轨迹空间连续性的日照分析算法优化[J].测绘科学,2017,42(9). |
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| 作者姓名： | 张驰 李佳 周侗 陶菲 |
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| 作者单位： | 1. 南通大学地理科学学院,江苏南通226019;虚拟地理环境教育部重点实验室,南京210023;2. 云南师范大学旅游与地理科学学院,昆明,650050;3. 南通大学地理科学学院,江苏南通,226019 |
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| 基金项目： | 国家自然科学基金青年科学基金项目，江苏省测绘科研项目，南通市科技项目 |
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| 摘 要： | 针对日照分析模拟必须考虑众多真三维地形/地物的遮挡因素,传统的日照分析方法难以在现实世界的复杂地理场景中得出高效、准确分析结果的问题展开研究,基于太阳运行轨迹的空间连续性,利用数据缓存方法对遮挡图元进行预判,实现了日照分析算法的优化。应用实例表明,将该方法与空间划分方法配合使用,可以在保证运算结果正确的基础上,进一步提高日照分析的计算效率,从而实现复杂地理场景中准确、快速的日照分析计算。
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| 关 键 词： | 日照分析 日照时数 空间连续性 数据缓存 |
Optimization of sunlight analysis algorithm based on the spatial continuity of solar orbit |
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| ZHANG Chi,LI Jia,ZHOU Tong,TAO fei.Optimization of sunlight analysis algorithm based on the spatial continuity of solar orbit[J].Science of Surveying and Mapping,2017,42(9). |
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| Authors: | ZHANG Chi LI Jia ZHOU Tong TAO fei |
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| Abstract: | It is necessary to take into account the shelter factor of numerous terrain and cultural features of three dimensions when carrying on solar analysis in the complex geographical scene of real world.However traditional solar analysis methods often have the problems of low efficiency and low accuracy when applied in it.In response to these issues,the sunlight shelter analysis algorithm is optimized by the method of data cache,which can be use to prognosis the shelter feature,based on the spatial continuity of the sun's moving orbit.Experiment shows that,by using the methods of data cache and space division cooperatively,the efficiency of the sunlight analysis algorithm can be further promoted on the basis of keeping the correctness of the computing result,which can precisely and efficiently calculate sunlight duration in complex geographical scene. |
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| Keywords: | sunlight analysis sunlight duration spatial continuity data cache |
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