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Logging of vehicle's position by a differential GPS with base station
Vala, Matěj ; Repka, Martin (referee) ; Straka, Tomáš (advisor)
The present work deals with the study of GPS, differential GPS and GPS with base station. The research focuses on the functioning, present status and future development of these systems. Further the thesis presents the actual measurement of the vehicle route using different GPS system. Base station, experimental vehicle, ADMA-G-PRO+, RT3000 and conventional GPS devices were used for the route measurement. The measurements were performed with and without correction. The analysis of the measured data was carried out in Matlab software in TeleMatrix, focusing on different parameters for each GPS system. The first analysis evaluates the route measurements using three GPS systems (RT3000, ADMA-G-PRO+ and a conventional GPS device). The results obtained show the effect of signal quality, horizontal speed, number of satellites, vehicle orientation, heading standard deviation and accuracy status during normal driving and during specific runs for the different GPS systems. The second analysis evaluates the RT3000 with and without correction for different manoeuvres. The evaluated results show that the RT3000 with correction provides higher accuracy than the RT3000 without correction. The RT3000 with correction shows a lower standard deviation of heading in the range of 0.210° - 2.228°, confirming its higher accuracy compared to the RT3000 without correction, where the standard deviation of heading ranges from 0.384° - 4.418°.
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