Surface Natural Spectrum BRDF Modeling of Commonly Used Materials on Space Targets

Abstract This paper measures and analyzes bidirectional reflectance distribution function (BRDF) on material surface of space target under natural light within spectrum range of 400nm-900nm. Through optimization of five-parameter model, the paper carries out modeling and optimal fitting in combination with genetic algorithm and the least square method. Results show the combination of genetic algorithm and the least square method could improve fitting precision of computing results and experimental measurement results, save time, and prove the effectiveness and practical performance of the method.