Large, durable and low‐cost reflectance standard for field remote sensing applications
Large, durable and low‐cost reflectance standard for field remote sensing applications
复制标题
适用于现场遥感应用的大型、耐用且低成本的反射率标准
DOI：
10.1080/01431160802549377
复制
发表时间：
2009
影响因子：
3.4
通讯作者：
M. Bretherton
中科院分区：
文献类型：
--
作者：
I. Sanches;M. Tuohy;M. Hedley;M. Bretherton
为了获取原位牧场冠层反射系数，冠层牧场探针（CAPP）的开发需要合适的大反射率标准。 Spectralon® 已在全球范围内成功用作反射率标准，但适合与 CAPP 一起使用的大型面板（直径大于 20 厘米）非常昂贵。在这种情况下，已经评估了大型、耐用且低成本的反射率标准件与连接到 CAPP 的 Analytical Spectral Devices FieldSpec® Pro FR 光谱辐射仪的使用。在这项研究中，测试了各种瓷砖、硫酸钡粉末、白色涂料和柯达卡。最符合反射率标准要求的材料是来自阿根廷的白色瓷砖。该瓷砖产生约 80% 的总反射率，在分析的光谱范围 (400–2400 nm) 内具有合理的均匀性；使用该图块作为参考样本获取的植被光谱在形状上与使用 Spectraon® 作为白色参考获取的植被光谱非常相似。
The development of the Canopy Pasture Probe (CAPP), for acquisition of in situ pasture canopy reflectance factor, required a suitable large reflectance standard. Spectralon® has been successfully used worldwide as a reflectance standard, but large panels (greater than 20 cm diameter) suitable for use with the CAPP are very expensive. In this context, a large, durable and low cost reflectance standard has been evaluated for use with an Analytical Spectral Devices FieldSpec® Pro FR spectroradiometer attached to the CAPP. In this study various ceramic tiles, barium sulphate powders, white paint and a Kodak card were tested. The material which best suited the requirements for a reflectance standard was the white ceramic tile sourced from Argentina. This tile produced around 80% total reflectance with reasonable uniformity over the spectral range analysed (400–2400 nm); and the vegetation spectra acquired using this tile as reference sample were very similar in shape to the vegetation spectra acquired using spectralon® as a white reference.