Internet-Based Spectral Database for Different Land Covers in Egypt

• 作者: E. Farg G. Al-Kzaz M. Shokr S. M. Arafat
• 来源期刊: 遥感技术进展(英文)
• 学科: 医学
• 关键词: SPECTRAL SIGNATURES Hyperstectral SPECTRORADIOMETER Database SPACEBORNE Airborne
• 年，卷（期）: 2013,（2）
• 页码范围: 85-92
• 页数: 8页
• 分类号: R73

摘要

The spectral signatures of natural objects in the visible and near-infrared spectral range are influenced by the object’s physical and biochemical properties. These signatures can be compiled in a database and used to retrieve information of land cover types and their physical composition from actual hyperspectral observations. This paper describes development process of hyperstectral database of reflectance from different land cover types in Egypt. It has been compiled from data obtained using a ground-based spectroradiometer system that covers the spectral range from 350 to 2500 nm at 1 nm resolution. The database is accessible through a website http://www.spectraldb.narss.sci.eg/spectral, where the system includes also metadata that describes the site environment and measurement processes. The system provides flexible mechanisms and friendly interfaces to allow accessing the database by the non-specialized people, whereas spectral data can be sorted by sites, species or selected environmental parameters. The system presents sample results from different vegetation and soil covers. Development of such a database is essential for different remote sensing applications, satellite’s calibrations, data dissemination and linkage with other databases for scientific researches purposes.