Hapke parameters
≈ 3 min read
Names in other languages
No names in other languages are held for this entry yet.
Article bodies are English and are not machine-translated. A name in another language is not a translation of the article.
The Hapke parameters are a set of parameters for an empirical model that is commonly used to describe the directional reflectance properties of the airless regolith surfaces of bodies in the Solar System. The model has been developed by astronomer Bruce Hapke at the University of Pittsburgh. The main parameters are: # \bar{\omega}_0 — Single scattering albedo. This is the ratio of scattering efficiency to total light extinction (which includes also absorption), for small-particle scattering of light. That is, K_s/(K_s+K_a) , where K_s is the scattering coefficient, and K_a is the absorption coefficient # h — The width of the opposition surge. # B_0 or S_0 — The strength of the opposition surge. # P_0 or g — The particle phase function parameter, also called the asymmetry factor. # \theta — The effective surface tilt, also called the macroscopic roughness angle. The Hapke parameters can be used to derive other albedo and scattering properties, such as the geometric albedo, the phase integral, and the Bond albedo.
The Hapke parameters are a set of parameters for an empirical model that is commonly used to describe the directional reflectance properties of the airless regolith surfaces of bodies in the Solar System. The model has been developed by astronomer Bruce Hapke at the University of Pittsburgh. The main parameters are: \bar{\omega}_0 — Single scattering albedo. This is the ratio of scattering efficiency to total light extinction (which includes also absorption), for small-particle scattering of light. That is, K_s/(K_s+K_a) , where K_s is the scattering coefficient, and K_a is the absorption coefficient h — The width of the opposition surge. B_0 or S_0 — The strength of the opposition surge. P_0 or g — The particle phase function parameter, also called the asymmetry factor. \theta — The effective surface tilt, also called the macroscopic roughness angle. The Hapke parameters can be used to derive other albedo and scattering properties, such as the geometric albedo, the phase integral, and the Bond albedo.
See also
Albedo Geometric albedo Bidirectional reflectance distribution function
References
Text derived from https://en.wikipedia.org/w/index.php?oldid=1350433427 under CC BY-SA 4.0; modifications have been made.