Développement du positionnement relatif temporel GPS en temps réel
|Abstract:||Time Relative Positioning (TRP) is a GPS observation processing method that has not yet been used to its full potential. This processing method operates under the same principle as conventional relative GPS positioning method but rather than combining simultaneous observations taken from two receivers, it uses observations from a single receiver taken at two different epochs. However, the important time varying errors, notably the satellite clock and ephemerides errors, as well as the ionospheric delays, must be taken into account in an appropriate way. This research is a continuation of two previous TRP research works carried out by the Centre for Research in Geomatics (CRG) by Michaud  and Balard . The purpose of this present research is to improve the TRP method along with the development of the real-time capability, which has not been previously addressed. The challenge is to use accurate corrections available in real-time. The experimental solution is to incorporate (some of the) GPS•C corrections in the TRP processing method. These corrections are broadcasted by the CDGPS service (Canada-Wide Differential GPS Service). The positive impact of these corrections on the accuracy of TRP solutions has been demonstrated. The research objective is to attain, in real-time, a horizontal position accuracy of 30 centimetres or better for the longest possible time intervals. The test results show that for a period of up to 20 minutes, this accuracy is achievable by using GPS•C corrections with the TRP processing method.|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||17 April 2018|
|Collection:||Thèses et mémoires|
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