Bidirectional reflectance measurements using a CCD-line-camera on a rotating device

摘要

The anisotropic reflectance behavior of earth surfaces presents an important problem for the interpretation of remotely sensed data. The Bidirectional Reflectance Distribution Function (BRDF) adequatly describes the properties of most surfaces. It specifies the behavior of surface scattering as a function of illumination and viewing angles at a particular wavelength [2], [3]. The knowledge is crucial for accurate interpretation and maximum use of wideangle or off-nadir data from spaceborne andaircraft sensors. A new technique to obtain the BRDF of natural surfaces under natural conditions in a short time is introduced using the very high resolution wide angle CCD line camera WAAC (Wide Angle Airborne Ccamera) on a rotating device.