Improved Out-of-Plane Measurement and Modeling for Bidirectional Reflectance Distribution Functions
Abstract
Historically, the vast majority of bi-directional reflectance distribution function (BRDF) measurement and modeling research has focused on reflection within the plane-of-incidence (in-plane) and simplified isotropic cases. Remote sensing applications, such as satellite light curve analysis, still struggle with disagreements between observations and simulations, but do not typically model reflection outside the plane-of-incidence (out-of-plane). First, a novel system is designed and constructed to successfully measure out-of-plane material BRDFs near the specular peak with high angular resolution. The system is then used to measure several materials, including a commercially available satellite solar cell. The measurements identify previously unmodeled out-of-plane components, including a significant distraction pattern. Finally, a novel closed-form BRDF model is created which accurately replicates the solar cell's out-of-plane reflection behavior {including the distraction pattern { using traditional BRDF inputs. Ultimately, it is expected that this and other out-of-plane BRDF models may improve the accuracy of light curve analysis and other remote sensing applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2021
- Accession Number
- AD1148661
Entities
People
- Todd V. Small
Organizations
- Air Force Institute of Technology