20.500.12556/RUL-32137 Sturdy positioning with high sensitivity GPS sensors under adverse conditions High sensitivity GPS receivers have extended the use of GNSS navigation to environments which were previously deemed unsuitable for satellite signal reception. Under adverse conditions the signals become attenuated and reflected. High sensitivity receivers achieve signal reception by using a large number of correlators and an extended integration time. Processing the observation data in dynamic and rapidly changing conditions requires a careful and consistent treatment. Code-based autonomous solutions can cause major errors in the estimated position, due primarily to multipath effects. A custom procedure of autonomous GPS positioning has been developed, boosting the positioning performance through appropriate processing of code and Doppler observations. Besides the common positioning procedures, robust estimation methods have been used to minimise the effects of gross observation errors. In normal conditions, differential GNSS yields good results, however, under adverse conditions, it fails to improve significantly the receiver's position. Therefore, a so-called conditional DGPS has been developed which determines the position differentially by using data from the strong signals only. These custom-developed procedures have been tested in different conditions in static and kinematic cases and the results have been compared to those processed by the receiver. GNSS GPS positioning high sensitivity differential GPS adverse conditions Doppler observations določevanje položaja visoko občutljivi GPS sprejemniki diferencialni GPS Dopplerjeva opazovanja GPS GNSS true false true Angleški jezik Slovenski jezik Članek v reviji 2015-07-10 10:12:22 2015-07-10 10:12:23 2022-08-01 11:30:11 0000-00-00 00:00:00 2010 0 0 Str. 8332-8347 iss. 9 Vol. 10 2010 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 528:62 1424-8220 10.3390/s100908332 5104225 10176278 RAZ_Kozmus_Trajkovski_Klemen_2010.pdf RAZ_Kozmus_Trajkovski_Klemen_2010.pdf 1 797CD826F90FC2D3AC1CD309A1BB7215 ce0e17740f6416133d7de43d0bd03fbdd202cf87c45bca3c6f13e68201674f19 b9ad3989-0f00-11ec-a523-00155dcfd717 20.500.12556/rul/a71eaa78-30fc-4e48-b06f-535b99f106e3 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146677 https://www.mdpi.com/1424-8220/10/9/8332 0 7195889e-0f00-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146676 Fakulteta za gradbeništvo in geodezijo 0 0 0