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GPS and GIS Methods in an African Rain Forest: Applications to Tropical Ecology and Conservation Ecology and Society
Dominy, Nathaniel J; University of Hong Kong; njdominy@hkusua.hku.hk; Duncan, Brean; Dynamac Corporation, Kennedy Space Center; DuncaBW@kscems.ksc.nasa.gov.
Since the completion of the Navstar Global Positioning System (GPS) in 1995, the integration of GPS and Geographical Information Systems (GIS) technology has expanded to a great number of ecological and conservation applications. In tropical rain forest ecology, however, the technology has remained relatively neglected, despite its great potential. Notwithstanding cost, this is principally due to (1) the difficulty of quality satellite reception beneath a dense forest canopy, and (2) a degree of spatial error unacceptable to fine-scale vegetation mapping. Here, we report on the technical use of GPS/GIS in the rain forest of Kibale National Park, Uganda, and the methodology necessary to acquire high-accuracy spatial measurements. We conclude that the...
Tipo: Peer-Reviewed Reports Palavras-chave: Kibale National Park; Uganda; Biodiversity conservation; Canopy interference; Differential correction; Frugivores; Geographic information systems; Global positioning system; Seed dispersal; Spatial ecology; Tropical rain forest; Vegetation mapping.
Ano: 2001
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A statistical approach to static and dynamic tests for Global Navigation Satellite Systems receivers used in agricultural operations Scientia Agricola
Maldaner,Leonardo Felipe; Canata,Tatiana Fernanda; Dias,Carlos Tadeu dos Santos; Molin,José Paulo.
ABSTRACT: The adaptation of the Global Navigation Satellite Systems (GNSS) technology to fit the needs of farmers requires knowledge of the accuracy level delivered by a GNSS receiver in working conditions. To date, no methodology indicates the minimum number of replications to perform a statistical comparison. This study aims to advance knowledge on the methodological approach for evaluating the static and dynamic performance of GNSS receivers commonly used in agricultural operations. For the static test, a supporting frame in the ground carried all the receivers with coordinates properly transported. In the dynamic test, a circular rail with a 9.55 m radius was installed at ground level with a platform driven by an electric motor to carry the receivers...
Tipo: Info:eu-repo/semantics/article Palavras-chave: RTK; SBAS; Accuracy; Differential correction.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000500101
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