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Automated Directional Measurement System for the Acquisition of Thermal Radiative Measurements of Vegetative Canopies

Authors
Journal
Sensors
1424-8220
Publisher
MDPI AG
Publication Date
Volume
9
Issue
3
Identifiers
DOI: 10.3390/s90301409
Keywords
  • Article

Abstract

The potential for directional optical and thermal imagery is very large. Field measurements have been performed with a goniometer on which thermal instruments were attached. In order to reduce dynamical effects the goniometer was adjusted to run in automated mode, for zenith and azimuthal direction. Directional measurements were performed over various crops with increasing heterogeneity. The improvements to the goniometer proved successful. For all the crops, except the vineyard, the acquisition of the directional thermal brightness temperatures of the crops went successfully. The large scale heterogeneity of the vineyard proved to be larger then the goniometer was capable of. The potential of directional thermal brightness temperatures has been proven.

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