Thomas Willemsen

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Global Navigation Satellite Systems (GNSS)-based navigation with smartphones is very popular. But in areas where no GNSS signal is found navigation could be useful. Examples are navigation in shopping malls, in big offices, in train stations or museums. The goal is to estimate the position in GNSS shaded areas to make navigation possible. The MEMS sensors(More)
SUMMARY Caused by the rapid technical development in the recent 30 years the question relating to position specification and navigation of pedestrians in the outside location could nearly be solved. GNSS-systems are working on almost all transportable devices, e.g. smartphones or tablets – consequently they can be used at any time, at any location. But this(More)
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