An efficient strategy for the inversion of bidirectional reflectance models with satellite remote sensing data

Technical Report · Sat Dec 31 04:00:00 EST 1994

DOI:https://doi.org/10.2172/527478· OSTI ID:527478

Privette, J L

The angular distribution of radiation scattered by the earth surface contains information on the structural and optical properties of the surface. Potentially, this information may be retrieved through the inversion of surface bidirectional reflectance distribution function (BRDF) models. This report details the limitations and efficient application of BRDF model inversions using data from ground- and satellite-based sensors. A turbid medium BRDF model, based on the discrete ordinates solution to the transport equation, was used to quantify the sensitivity of top-of-canopy reflectance to vegetation and soil parameters. Results were used to define parameter sets for inversions. Using synthetic reflectance values, the invertibility of the model was investigated for different optimization algorithms, surface and sampling conditions. Inversions were also conducted with field data from a ground-based radiometer. First, a soil BRDF model was inverted for different soil and sampling conditions. A condition-invariant solution was determined and used as the lower boundary condition in canopy model inversions. Finally, a scheme was developed to improve the speed and accuracy of inversions.

• Research Organization: Colorado Univ., Boulder, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC05-76OR00033
• OSTI ID: 527478
• Report Number(s): DOE/OR/00033--T710; ON: DE97053337
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
99 GENERAL AND MISCELLANEOUS
ALBEDO
ALGORITHMS
B CODES
CANOPIES
EXPERIMENTAL DATA
RADIOMETERS
REMOTE SENSING
SATELLITES
TERRESTRIAL ECOSYSTEMS