Klemen Kozmus Trajkovski (Author), Oskar Sterle (Author), Bojan Stopar (Author)

Abstract

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.

Keywords

določevanje položaja;visoko občutljivi GPS sprejemniki;diferencialni GPS;Dopplerjeva opazovanja;GPS;GNSS;GPS positioning;high sensitivity;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: MDPI AG
UDC: 528:62
COBISS: 5104225 Link will open in a new window
ISSN: 1424-8220
Parent publication: Sensors
Views: 1714
Downloads: 711
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Other data

Secondary language: Slovenian
Secondary keywords: določevanje položaja;visoko občutljivi GPS sprejemniki;diferencialni GPS;Dopplerjeva opazovanja;GPS;GNSS;
File type: application/pdf
Type (COBISS): Article
Pages: str. 8332-8347
Volume: ǂLetn. ǂ10
Issue: ǂšt. ǂ9
Chronology: 2010
DOI: 10.3390/s100908332
ID: 8312323