Equifinality in terrestrial spectroradiometric imaging of vegetation canopies

植被冠层地面光谱辐射成像的等效性

• 批准号: 345031-2007
• 负责人: Teillet, Philippe
• 金额: $ 2.94万
• 依托单位: University of Lethbridge
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=364947
• 关键词: Equifinality; terrestrial; spectroradiometric; imaging; vegetation

The increasingly numerous and diverse Earth observation satellite systems can contribute information of significant value, provided developments in the physical underpinnings keep pace.  A major challenge with these systems is to ensure that similar measurements by different sensor systems under different observational conditions yield physically consistent and accurate geophysical and biophysical data.  The research addressed here considers whether there exists a unique relationship between vegetation canopy architecture and the canopy's reflectance as a function of observation angle.  Digital imaging spectrometers will be used at ground level to acquire high-spatial-resolution spectral image data as a function of angle over crop canopies in order to investigate at what spatial scale the angular signatures reach those observed by a satellite imaging sensor.  The research is designed to improve canopy reflectance models used with satellite image data in operational crop monitoring.  The proof-of-concept research will be carried out for potatoes and sugar beets in Southern Alberta.  Overall, the proposed research is intended to improve the accuracies of change detection in resource monitoring applications and guide the directions of new remote sensing research efforts.

越来越多和多样化的地球观测卫星系统可以提供有重要价值的信息，这些系统的一个主要挑战是确保不同传感器系统在不同观测条件下进行的类似测量产生物理上一致和准确的地球物理和生物物理数据。这里涉及的研究考虑了植被冠层结构和冠层反射率之间是否存在作为观测角度的函数的独特关系。数字成像光谱仪将在地面使用，以获取作为作物冠层角度函数的高空间分辨率光谱图像数据，以便调查角度特征达到卫星成像传感器所观测到的角度特征的空间尺度。这项研究旨在改进在业务作物监测中使用卫星图像数据的冠层反射模型。此外，将对南艾伯塔省的土豆和甜菜进行概念验证研究。总体来说，这项研究旨在提高资源监测应用中变化检测的准确性，并为新的遥感研究工作指明方向。