Analysis of the accuracy of GPS Trimble JUNO ST measurement in the conditions of forest canopy

M. Klimánek
Additional contact information
M. Klimánek: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic

Journal of Forest Science, 2010, vol. 56, issue 2, 84-91

Abstract: GPS Trimble JUNO ST was tested at 16 points under forest canopy. The measurements were done on three different dates of the growing seasons in 2007 and 2008. On each date, 4 recordings were measured in the length of 1, 2, 5, and 10 minutes with the recording frequency of 5 seconds. The resultant data were statistically evaluated by analysis of variance (ANOVA) both for data before corrections and for data after post-process corrections from the reference station. The tested GPS receiver reaches the average mean square error of the measurement of XY coordinates in the interval of 2.7 up to 5.1 m (without corrections and depending on the time of observation). The error of the altitudinal (Z) coordinate measurement is three times the average MSE XY. The use of corrections from reference stations turns out to be ineffective. No statistically significant relationship was proved between the PDOP value and the error of measurement of the position or height, and there was no significant relationship of the type of stand or stand density or the type of relief. By contrast, the age of stand was statistically significant and there are higher MSE XY values in older stands, depending, however, on the stand density.

Keywords: forest canopy impact; GPS; GPS device accuracy; location precision; mean square error; Trimble JUNO ST (search for similar items in EconPapers)
Date: 2010
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://jfs.agriculturejournals.cz/doi/10.17221/32/2009-JFS.html (text/html)
http://jfs.agriculturejournals.cz/doi/10.17221/32/2009-JFS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnljfs:v:56:y:2010:i:2:id:32-2009-jfs

DOI: 10.17221/32/2009-JFS

Access Statistics for this article

Journal of Forest Science is currently edited by Mgr. Ilona Procházková

More articles in Journal of Forest Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().