The NIST Robotic Optical Scatter Instrument (ROSI) and its Application to BRDF Measurements of Diffuse Reflectance Standards for Remote Sensing

被引：13

作者：

Patrick, Heather J. ^{[1
]}

Zarobila, Clarence J. ^{[1
]}

Germer, Thomas A. ^{[1
]}

机构：

[1] NIST, Gaithersburg, MD 20899 USA

来源：

EARTH OBSERVING SYSTEMS XVIII | 2013年 / 8866卷

关键词：

BRDF; reflectance; robotics; bidirectional; diffuse; STARR; STARR II; ROSI; supercontinuum;

D O I：

10.1117/12.2023095

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe the robotic optical scatter instrument (ROSI), a new robotic arm-based goniometer for in-plane and out-of-plane reflectance and bidirectional reflectance distribution function (BRDF) measurements of surfaces. The goniometer enables BRDF measurements to be made at nearly any combination of incident and scattering angles, without obstruction from frames or cradles that occur in traditional goniometers made of nested rotation stages. We present exploratory measurements of in-plane and hemispherically-scanned out-of-plane BRDF on a sintered white polytetrafluoroethylene (PTFE) sample using a supercontinuum fiber laser-based tunable light source operated at a wavelength of 550 nm, in order to demonstrate the capabilities of the system. An initial assessment of uncertainties is presented.

引用

页数：12

共 11 条

[1] Development of a robot-based gonioreflectometer for spectral BRDF measurement [J].