Projects per year
Abstract
We present the theoretical background and analytical equations for calculating spectral reflectance and transmittance factors for plant leaves from data collected by a field spectroradiometer attached to a double-integrating sphere. The sphere constants required for the calculations are derived from measurements of an empty sample port and a diffuse reflectance panel. The new method is applied in measuring the spectra of leaves belonging to 13 tree species. The greatest advantages of a double-sphere system compared with the conventional single-sphere substitution method is the speed of measurements, ease of operation, and increased portability and field-ruggedness.
Original language | English |
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Pages (from-to) | 563-571 |
Number of pages | 9 |
Journal | Applied Optics |
Volume | 56 |
Issue number | 3 |
DOIs | |
Publication status | Published - 20 Jan 2017 |
MoE publication type | A1 Journal article-refereed |
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Dive into the research topics of 'Theoretical algorithm and application of a double-integrating sphere system for measuring leaf transmittance and reflectance spectra'. Together they form a unique fingerprint.Projects
- 1 Finished
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BOREALITY: Seasonal dynamics of the boreal region from space: connecting forest albedo to structure and productivity throughout the phenological cycle
Hovi, A. (Project Member), Rautiainen, M. (Principal investigator), Majasalmi, T. (Project Member), Juola, J. (Project Member) & Palviainen, P. (Project Member)
01/09/2015 → 31/12/2019
Project: Academy of Finland: Other research funding
Equipment
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i3 – Industry Innovation Infrastructure
Sainio, P. (Manager)
School of EngineeringFacility/equipment: Facility
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Spectral lab (i3)
Rautiainen, M. (Manager)
Department of Built EnvironmentFacility/equipment: Facility