Resumo

CANO GONZALEZ, Alejandro et al. Design of a goniometer system with three degrees of freedom for measuring reflectances and radiative temperatures in the soil-vegetation system. Terra Latinoam [online]. 2014, vol.32, n.1, pp.59-68. ISSN 2395-8030.

The multi-angular spectral measurement of vegetation systems requires expensive heavy goniometers, difficult to operate in field or laboratory. To facilitate these measurements, we designed an inexpensive goniometric system (SIGO-CP), which is simple to operate and flexible enough to be used in field or laboratory. The SIGO-CP, unlike current systems, has three degrees of freedom instead of two: azimuthal, zenithal and radial, which permits changing the area of the field of vision associated with the scale effect of the observations. Implementation of the SIGO-CP was demonstrated under laboratory conditions, including application to rainfall events with rainfall simulator for experiments in geometric arrangements of plants in plastic bags over a table with plant stems above soil cover.

Palavras-chave : azimuthal-zenithal-radial measurement equipment; multi-angular spectral data; tree geometry; soil-vegetation system.

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