Paper published in a journal (Scientific congresses and symposiums)
Performance enhancement of a BSDF test bench using an algorithm fed with laser-tracker measurements
Clermont, Lionel; Michel, Céline; Mazy, Emmanuel
2019In Proceedings of SPIE: The International Society for Optical Engineering, 11057
Peer reviewed
 

Files


Full Text
Performance enhancement of a BRDF test bench using an algorithm fed with laser-tracker measurements.pdf
Author preprint (920.43 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
BRDF; BSDF; BTDF; Bidirectional scattering distribution function; calibration; diffuser; measurement; enhancement; laser tracker; Sentinel-4; ESA
Abstract :
[en] In the field of earth-observation, on-board calibration is often necessary to guarantee the radiometric accuracy of space instruments. A typical method is to use large diffusers in front of the instrument, illuminated with a reference source like the sun [1]. Hence, it is necessary to characterize the scattering properties of the diffuser with excellent accuracy. Given the large size and weight of the diffusers to characterize, CSL have developed a bench which uses a robot arm to manipulate the sample. For the most stringent applications, the typical accuracy of robotic arms is not good enough to measure the BSDF with a satisfactory accuracy. A method have been developed which uses laser tracker measurements of the sample during a calibration phase and compensate for the robot errors. This paper describes the principle of the method and the results obtained. We also present the model of how the orientation error of the sample affects the BSDF relative error.
Research center :
STAR - Space sciences, Technologies and Astrophysics Researc
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Clermont, Lionel ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Michel, Céline ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Mazy, Emmanuel ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Language :
English
Title :
Performance enhancement of a BSDF test bench using an algorithm fed with laser-tracker measurements
Publication date :
21 June 2019
Event name :
SPIE Optical Metrology, 2019, Munich, Germany
Event organizer :
SPIE
Event place :
Munich, Germany
Event date :
June 2018
Audience :
International
Journal title :
Proceedings of SPIE: The International Society for Optical Engineering
ISSN :
0277-786X
eISSN :
1996-756X
Publisher :
International Society for Optical Engineering, Bellingham, United States - Washington
Special issue title :
Modeling Aspects in Optical Metrology VII
Volume :
11057
Peer reviewed :
Peer reviewed
Available on ORBi :
since 30 November 2020

Statistics


Number of views
63 (12 by ULiège)
Number of downloads
126 (6 by ULiège)

Scopus citations®
 
1
Scopus citations®
without self-citations
0
OpenCitations
 
0

Bibliography


Similar publications



Contact ORBi