Performance comparison of a low cost and a high cost global positioning system receivers

Date

7-2002

Degree

Bachelor of Science in Agricultural Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Prof. Antonio Gabino P. Sobremisana

Committee Member

Prof. Manolo G. Villano, Engr. Rosa D. Bueno

Abstract

This study was conducted to determine if the length of logging period increases the accuracy of determining geographic coordinates and compare if the high cost receiver, Magellan GPS ProMark X-CMTM really performs better than the low cost one Magellan GPS ProMark X-CMTM. The two receivers were tested simultaneously at the National Agromet Station at various length of logging period. Differential GPS was utilized to correct the data obtained for each trial. The horizontal errors for both the corrected and uncorrected data were determined then the accuracy of the receivers indicated by 2 Drms were then computed. The results revealed that for stand alone GPS the optimum time for staying in the field was 60 minutes while for DGPS 30 minutes is sufficient. This holds true for both receivers. Furthermore, the uncorrected data for both receivers showed no significant difference in their mean error and also there is no significant difference in mean error at the 3% level of significance for the corrected data for both receivers. However, for the two models, the corrected data is significantly better than the uncorrected one. Based on the results there is still a need for Dgps for better accuracy even though SA was set to zero. For ordinary or stand-alone mode, there is really no need to invest on high grade or high cost receivers. But for DGPS use, it may be worthwhile investing on higher grade receivers to attain better accuracy and precision.

Language

English

LC Subject

GPS receivers--Comparison, Global Positioning System

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2002 A2 P86

Document Type

Thesis

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