| 基于COM组件式定量遥感模型库的实践 |
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| 引用本文： | 丁新,苏理宏,王华,景娟,唐世浩,王锦地,吴门新.基于COM组件式定量遥感模型库的实践[J].地球信息科学,2003,5(3):79-85. |
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| 作者姓名： | 丁新 苏理宏 王华 景娟 唐世浩 王锦地 吴门新 |
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| 作者单位： | 北京师范大学资源与环境科学系遥感与GIS研究中心, 北京 100875 |
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| 基金项目： | 863项目我国典型地物波谱数据 ( 863 -10 3 -0 5 -0 2 )资助 |
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| 摘 要： | 为了使遥感模型库具有良好的可扩展性、重用性和互用性 ,本文提出了组件式模型库的设计思路和总体框架 ,并通过实例验证了遥感波谱模拟的可行性和采用 COM组件开发定量遥感模型库的可实施性。
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| 关 键 词： | 定量遥感 模型库 组件技术 |
| 收稿时间： | 2002-12-29; |
| 修稿时间： | 2002年12月29 |
Practice of Quantitative Remote Sensing Model Library Based on COM Technique |
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| DING Xin SU Lihong WANG Hua JING Juan TANG Shihao WANG Jingdi,WU Menxin.Practice of Quantitative Remote Sensing Model Library Based on COM Technique[J].Geo-information Science,2003,5(3):79-85. |
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| Authors: | DING Xin SU Lihong WANG Hua JING Juan TANG Shihao WANG Jingdi WU Menxin |
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| Institution: | The Center of Remote Sensing & GIS, Beijing Normal University, Beijing 100875 |
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| Abstract: | With the development of remote sensing, new models are available continuously In order to extend the practicability of the model library, the authors introduce component object model (COM) technique COM is a software architecture that allows the components made by different software vendors to be combined into avariety of applications Remote sensing model library is composed of three parts,i e , common objects, model objects and accessorial objects Common objects include input/output procedure, solar angle calculating procedure inbi directional reflectance, and metadata about all the models Model objects include the models contributing to quantitative remote sensing applications, which comprise system models, simulant models and application models Accessorial objects include prior knowledge, measurement data and image data In the article,the executable project is validated with an instance in the end The spectrum of typical land surface observed in nadir viewing direction is simulated in pixel scale In this process, crop model, PROSPECT model and SAIL model are used to calculate the spectrum character of the pixel Crop model is used to simulate leaf area index, and PROSPECT model is to simulate reflectance and transmission of leaves The final result is calculated with SAIL model The simulated spectrum of winter wheat observed in nadir viewing direction is at 11 o'clock Apr 15, 2001 In the article, each model and each common object are designed to be components The model library based on COM technique adapts to the progress and is propitious to be expanded and modified |
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| Keywords: | Quantitative remote sensing Model library COM technique |
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