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Sensors 2009, 9(5), 3891-3907; doi:10.3390/s90503891

Polarised Multiangular Reflectance Measurements Using the Finnish Geodetic Institute Field Goniospectrometer

Finnish Geodetic Institute, Box 15, 02431 Masala, Finland
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Received: 15 April 2009 / Revised: 15 May 2009 / Accepted: 21 May 2009 / Published: 22 May 2009
(This article belongs to the Section Remote Sensors)
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Abstract

The design, operation, and properties of the Finnish Geodetic Institute Field Goniospectrometer (FIGIFIGO) are presented. FIGIFIGO is a portable instrument for the measurement of surface Bidirectional Reflectance Factor (BRF) for samples with diameters of 10 – 50 cm. A set of polarising optics enable the measurement of linearly polarised BRF over the full solar spectrum (350 – 2,500 nm). FIGIFIGO is designed mainly for field operation using sunlight, but operation in a laboratory environment is also possible. The acquired BRF have an accuracy of 1 – 5% depending on wavelength, sample properties, and measurement conditions. The angles are registered at accuracies better than 2°. During 2004 – 2008, FIGIFIGO has been used in the measurement of over 150 samples, all around northern Europe. The samples concentrate mostly on boreal forest understorey, snow, urban surfaces, and reflectance calibration surfaces. View Full-Text
Keywords: Finnish Geodetic Institute Field Goniospectrometer; FIGIFIGO; reflectance; spectrum; BRF; HDRF; BRDF; spectrodirectional remote sensing Finnish Geodetic Institute Field Goniospectrometer; FIGIFIGO; reflectance; spectrum; BRF; HDRF; BRDF; spectrodirectional remote sensing
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Suomalainen, J.; Hakala, T.; Peltoniemi, J.; Puttonen, E. Polarised Multiangular Reflectance Measurements Using the Finnish Geodetic Institute Field Goniospectrometer. Sensors 2009, 9, 3891-3907.

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