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Quantitative field spectroscopic measurement instrumentation and techniques


Schaepman, Michael E; Dangel, Stefan; Kneubühler, Mathias; Schläpfer, Daniel; Bojinski, Stephan; Brazile, Jason; Kötz, Benjamin; Strub, Gabriela; Kohler, R; Popp, C; Schopfer, Jürg; Itten, Klaus I (2002). Quantitative field spectroscopic measurement instrumentation and techniques. In: 1st Workshop on Field Spectrometry, Southampton, England, 2002 - 2002.

Abstract

Over the past few years imaging spectrometer have increased in number and quality significantly. Directly correlated to this growth, is the need of (near-) simultaneous field work with non-imaging spectroradiometers. Due to severe constraints in technology requirements for these field instruments (portability, power supply, etc.), reliable portable instruments have become available later than their imaging correspondents. The systematic use of a large variety of ground instruments from their early stages in 1990 and onwards is therefore discussed and the need for reproducible radiometric measurements outlined. The assessment includes a review of calibration practices for non-imaging instruments and examples of sampling strategies needed for field data collection. Finally, a combined measurement facility (FIGOS/LAGOS) is presented, demonstrating the usefulness of measuring bi-conical reflectance factor under laboratory conditions (LAGOS, Laboratory Goniometer System), and its outdoor counterpart measuring hemispherical-conical reflectance (FIGOS, Field Goniometer System).

Abstract

Over the past few years imaging spectrometer have increased in number and quality significantly. Directly correlated to this growth, is the need of (near-) simultaneous field work with non-imaging spectroradiometers. Due to severe constraints in technology requirements for these field instruments (portability, power supply, etc.), reliable portable instruments have become available later than their imaging correspondents. The systematic use of a large variety of ground instruments from their early stages in 1990 and onwards is therefore discussed and the need for reproducible radiometric measurements outlined. The assessment includes a review of calibration practices for non-imaging instruments and examples of sampling strategies needed for field data collection. Finally, a combined measurement facility (FIGOS/LAGOS) is presented, demonstrating the usefulness of measuring bi-conical reflectance factor under laboratory conditions (LAGOS, Laboratory Goniometer System), and its outdoor counterpart measuring hemispherical-conical reflectance (FIGOS, Field Goniometer System).

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Additional indexing

Item Type:Conference or Workshop Item (Paper), not refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Event End Date:2002
Deposited On:30 Sep 2014 12:27
Last Modified:08 Dec 2017 07:17
Additional Information:Proceedings erschienen auf CD-ROM

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