Comparing the Reliability of Single Frequency Gps Receivers: A Field Study
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 5
Abstract
As GPS units are becoming smaller and less expensive, the use of GPS is becoming more common in land, air and marine navigation and surveying also the GPS has an an expanding number of applications in Commerce and government, transportation related studies, forestry, hunting, environmental issues etc. i.e. GPS is used in every aspect of today’s world however the manufacturers of these GPS receivers only provide technical information on their respective receiver’s accuracy under ideal conditions. This paper compares the reliability of three current global positioning system (GPS) Single Frequency receivers—Ashtech Promark 200, Trimble R3Trimble and Sokkia GRX-2 receiver evaluated with different logging interval of 1 second to determine the reliability of these receivers in the normal work scenario. In this study the reliability of receivers were checked with the help of single receivers only without the use of Differential GPS technique by performing test-retest reliability. To compare the different GPS receivers a study was carried out at the roof of the Geomatics Engineering Department building, IIT Roorkee Campus, India. The points were taken at different dates with equivalent settings. . Results indicate that the reliability of the GPS receivers varies among the different models under time intervals with different logging rates and it was found that the highest reliability achieved for latitude is by Ashtech ProMark 120 (0.98287792) from 3pm-4pm for 10 second logging interval(Figure 3), for longitude by Trimble R-3 (0.972459028) from 1pm-2pm for 1 second interval(Figure 4)and for ellipsoidal height by Sokkia GRX-2 (0.974075585) from3pm-4pm for 1 second interval(Figure 5).
Authors and Affiliations
Sumit M. Meshram, Dr. J K Ghosh
Keywords
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- EP ID EP394264
- DOI 10.9790/9622-0805047880.
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