Sensitivity analysis of a CCD-based camera system for the retrieval of bidirectional reflectance distribution function for vicarious calibration

Prabal Nandy, Kurt Thome, Stuart F Biggar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The University of Arizona, Optical Sciences Center, Remote Sensing Group is involved with the vicarious calibration of satellite sensors in support of NASA's Earth Observing System (EOS) program. Sensor calibration coefficients are calculated by comparing sensor DN values to top of the atmosphere (TOA) radiance values, calculated from radiative transfer code (RTC). The RTC output is based on measurements of site spectral reflectance and atmospheric parameters at a selected test site. The bidirectional reflectance distribution function (BRDF) which relates the angular scattering of a given beam of incident radiation on a surface, is an important factor in these radiative transfer calculations. The inclusion of BRDF data into RTC calculations improves the level of accuracy of the vicarious calibration method by up to 5% over some target sites. BRDF data is also valuable in the validation of Multi-Angle Imaging Spectroradiometer (MISR) data sets. The Remote Sensing Group has developed an imaging radiometer system for ground-based measurements of BRDF. This system relies on a commercially-available 1024- by 1024-pixel silicon CCD array. Angular measurements are accomplished with a 8-mm focal length fisheye lens that has a full 180-degree field of view. Spectral selection is through four interference filters centered at 470, 575, 660 and 835 nm, mounted internally in the fisheye lens. This paper discusses the effect of calibration errors in this camera system on the retrieval of Hapke/Jacquemoud surface parameters from modeled BRDFs. The effect of these retrieved BRDFs on vicarious calibration results is discussed. Data processing schemes for the retrieval of these parameters from BRDF camera data sets are described. Based on these calculations, calibration requirements for digital camera BRDF-retrieval systems are presented.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages279-289
Number of pages11
Volume4132
DOIs
StatePublished - 2000
EventImaging Spectrometry VI - San Diego, USA
Duration: Jul 31 2000Aug 2 2000

Other

OtherImaging Spectrometry VI
CitySan Diego, USA
Period7/31/008/2/00

Fingerprint

bidirectional reflectance
sensitivity analysis
Charge coupled devices
Sensitivity analysis
Distribution functions
retrieval
charge coupled devices
distribution functions
Cameras
cameras
Calibration
Radiative transfer
radiative transfer
remote sensing
sensors
MISR (radiometry)
lenses
Remote sensing
Lenses
Sensors

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Nandy, P., Thome, K., & Biggar, S. F. (2000). Sensitivity analysis of a CCD-based camera system for the retrieval of bidirectional reflectance distribution function for vicarious calibration. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4132, pp. 279-289). Society of Photo-Optical Instrumentation Engineers. https://doi.org/10.1117/12.406597

Sensitivity analysis of a CCD-based camera system for the retrieval of bidirectional reflectance distribution function for vicarious calibration. / Nandy, Prabal; Thome, Kurt; Biggar, Stuart F.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4132 Society of Photo-Optical Instrumentation Engineers, 2000. p. 279-289.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nandy, P, Thome, K & Biggar, SF 2000, Sensitivity analysis of a CCD-based camera system for the retrieval of bidirectional reflectance distribution function for vicarious calibration. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 4132, Society of Photo-Optical Instrumentation Engineers, pp. 279-289, Imaging Spectrometry VI, San Diego, USA, 7/31/00. https://doi.org/10.1117/12.406597
Nandy P, Thome K, Biggar SF. Sensitivity analysis of a CCD-based camera system for the retrieval of bidirectional reflectance distribution function for vicarious calibration. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4132. Society of Photo-Optical Instrumentation Engineers. 2000. p. 279-289 https://doi.org/10.1117/12.406597
Nandy, Prabal ; Thome, Kurt ; Biggar, Stuart F. / Sensitivity analysis of a CCD-based camera system for the retrieval of bidirectional reflectance distribution function for vicarious calibration. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4132 Society of Photo-Optical Instrumentation Engineers, 2000. pp. 279-289
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