Browsing by Subject "GPS receivers"

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Access status: Open Access ,
The use of hand-held GPS receivers for the identification of objects in a wooded area
(2015) Mika, Monika
This paper presents the results of a comparative analysis of objects (trees) coordinates survey using hand-held type receivers GPSMAP 76, and the Nautiz X7 GPSmap 62st. The works were performed in the palace and park complex in Osiek, in the autumn and winter, to minimize the influence of terrain curtains in the form of leaves, which prevent or significantly restrict the applicability of GPS measurements. The results of field measurements with the use of three types of receivers showed wide disparity in the obtained coordinates. Despite these differences, the identification of objects turned out to be unambiguous. A satisfactory effect was achieved through the choice of research methodology, involving the simultaneous use of the navigation functions of Garmin receivers and the ArcGIS software of the Nautiz X7 receiver. This receiver can in fact perform the functions of a laptop with the creation of GIS databases for the positioned objects. If the position of the identified tree was not certain the database and maps from the GEOPORTAL were applied. This database is developed for the inventory of monuments of nature and is located in the local resources. In the database of natural monuments, for each of the trees one can find basic descriptive attributes concerning its species, diameter or age, as well as photographic documentation. The aim of this study was the determination of the differences in data acquisition using hand-held type receivers GPSMAP 76, and the Nautiz X7 GPSmap 62st and the determination of the degree of their suitability in the wooded area to identify individual objects (trees).