@Article{PintoPoBaMaSaCa:2015:SpAtCh,
author = "Pinto, Ciebele Teixeira and Ponzoni, Fl{\'a}vio Jorge and
Barrientos, C. and Mattar, C. and Santamar{\'{\i}}a-Artigas, A.
and Castro, Ruy M.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Chile Air Force} and
{Instituto de Estudos Avan{\c{c}}ados (IEAv)} and {Instituto de
Estudos Avan{\c{c}}ados (IEAv)} and {Instituto de Estudos
Avan{\c{c}}ados (IEAv)}",
title = "Spectral and atmospheric characterization of a site at Atacama
Desert for earth observation sensor calibration",
journal = "IEEE Geoscience and Remote Sensing Letters",
year = "2015",
volume = "12",
number = "11",
pages = "2227--2231",
month = "Nov.",
keywords = "Aerosols, Atmospheric measurements, Calibration, Earth, Optical
sensors, Optical variables control, Remote sensing.",
abstract = "The application of Earth observation sensor data in quantitative
approaches calls on the conversion of original digital numbers to
radiometric quantities such as radiance or reflectance. This
conversion depends on the sensor absolute calibration. One of the
postlaunch methods adopted to calibrate orbital sensors is the
reflectance-based approach. According to this method, a reference
surface with specifics characteristics is required. The main
objective of this work is to evaluate the suitability of a
specific surface located at Atacama Desert in Chile to be used as
a reference surface for calibration of Earth observation sensor
purposes. A field campaign was carried out from August 19 to 22,
2014, when radiometric measurements were performed to spectrally
characterize the reference surface and to evaluate the atmospheric
characteristics of the study area. The average reference surface
reflectance factor in the spectral region from 350 to 2500 nm
ranged from 0.1 to 0.3, and its spatial uniformity was within
2%-4%. The amount of atmospheric aerosols was low, with an aerosol
optical depth at 550 nm between 0.08 and 0.11 during the fieldwork
period. The climate is hyperarid, and the water column abundance
was lower than 0.43 g/cm2. The results demonstrated that a
reference surface at Atacama Desert could be effectively used for
calibration of either airborne or orbital electrooptical sensors,
providing an excellent surface in South America.",
doi = "10.1109/LGRS.2015.2460454",
url = "http://dx.doi.org/10.1109/LGRS.2015.2460454",
issn = "1545-598X",
language = "en",
urlaccessdate = "30 abr. 2024"
}