基于GIS的青海湖流域典型地物光谱数据库研究

发布时间：2019-02-13 10:46

【摘要】：地物波谱特性是遥感定量分析的基础,也是遥感基础研究的重要内容。它同样是遥感探测的基础,遥感器波段优化组合的关键依据,遥感信息提取和地物识别的依据,是开展定量遥感研究的前提条件。野外实测光谱数据是进行遥感定量分析不可或缺的步骤,运用相关的计算机技术来存储管理和分析实测光谱数据,可以提高遥感信息的利用水平。我们确定了野外光谱数据采集、光谱数据处理与特征提取技术和方法,针对系统应用需求和业务流程,对系统功能模块、系统架构和数据库数据规范、数据存储、数据模型和数据表物理结构进行了设计,在SQL Server 2008中创建青海湖流域典型地物光谱数据库,在Microsoft Visual Studio 2008开发环境下,利用C#语言编程开发了该光谱数据库系统,实现了光谱数据的管理、查询与显示和对比分析等功能。系统登录分为管理员登陆和用户登陆2种方式,其中管理员可以有效管理系统用户。数据管理是系统的基础功能,以有效地浏览光谱数据;数据添加是系统的一项重要功能,可以往系统增加新的采集光谱数据;查询与显示是系统的核心功能,按照采样点编号方式,把单一的光谱曲线以及相关的主要属性信息显示出来;数据对比分析是查询显示功能的一种升级,可以同时把2条光谱曲线在同一界面显示出来。
[Abstract]:The spectral characteristics of ground objects is the basis of quantitative analysis of remote sensing and an important part of the basic research of remote sensing. It is also the basis of remote sensing detection, the key basis of optimal combination of remote sensing band, the basis of remote sensing information extraction and ground object recognition, which is the precondition of quantitative remote sensing research. Field measured spectral data is an indispensable step for quantitative analysis of remote sensing. Management and analysis of measured spectral data can improve the utilization level of remote sensing information. We determine the techniques and methods of field spectral data acquisition, spectral data processing and feature extraction. According to the system application requirements and business processes, the system function modules, system architecture and database data specifications, data storage, The data model and the physical structure of the data table are designed, and the spectral database of typical features in Qinghai Lake Basin is established in SQL Server 2008. The spectral database system is developed by using C # language under the development environment of Microsoft Visual Studio 2008. The functions of spectral data management, query, display and contrast analysis are realized. System login can be divided into two ways: administrator login and user login, in which administrator can manage system users effectively. Data management is the basic function of the system to effectively browse spectral data, data addition is an important function of the system, it can add new spectral data to the system. Query and display is the core function of the system. According to the method of sampling point number, the single spectral curve and related main attribute information are displayed. Data contrast analysis is an upgrade of query display function. Two spectral curves can be displayed at the same interface at the same time.
【学位授予单位】：青海师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P237;P208

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