Abstract
This research involved the positional accuracy study of portable Global Positioning System (GPS) in open and closed spaces. The project has several phases; the first phase consists of setting the portable GPS antenna on the laptop computer and running the u-center data recording application software for raw data recording. The second phase involves data filtration, extraction of position information both for open and closed spaces for analysis. The next stage generation of results including the determining means of latitude and longitude errors and comparing positional accuracy in open and closed spaces. The errors between positions in open and closed spaces were determined for comparison based on selected known locations. The results are plotted into real latitude and longitude scale to show the position acquired. The result in open and closed spaces were finally statistically compared. The pattern of positions accuracy for open and closed space indicates larger longitude error compared to latitude error varying between 1-15 meters in terms of range error from the mean. Test for known positions using ANOVA indicate significant difference between locations acquired in open and closed spaces.
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