Improving Quality of Satellite Navigation Devices

  • Krzysztof Tokarz
  • Michał Dzik
Part of the Advances in Intelligent and Soft Computing book series (AINSC, volume 59)


Global Positioning System (GPS) technology has become an essential tool used for localization, navigation, tracking, mapping and timing. The typical accuracy of position measurement for stationary receivers and these in motion vary from 3 to 20 m. This accuracy is affected by the variety of factors such as fluctuation of time in which the signal passes through ionosphere and troposphere, inaccurate time measuring in the receiver, or the multipath propagation caused by reflections from buildings and other objects. The localization accuracy can be improved by differential measuring, usage of some additional sensors, or postprocessing. The article presents discussion of possibilities of increasing position measurement accuracy to be applied in the walking assistant device, designed to enhance quality of life for blind people by helping them in outdoor activities within the urban environment.


GPS navigation accuracy DGPS 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Krzysztof Tokarz
    • 1
  • Michał Dzik
    • 1
  1. 1.Institute of InformaticsSilesian University of TechnologyGliwicePoland

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