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On the basis of a research project, the paper investigates vehicle trajectory estimation and prediction against the background of cooperative driving for the purpose of collision avoidance. For this reason, a low-cost single-frequency GNSS equipment is used and the vehicle state is processed applying Precise Point Positioning (PPP). Within a Kalman filter, the PPP solution is coupled with signals...
More than half of the population in Western Europe and North America own a smartphone, providing a large market for both indoor and outdoor location-based services. In order to gain a ubiquitous solution for a smartphone-based indoor positioning, motion recognition may be utilized. Motion recognition can be used to adapt relative positioning solutions as well as the position filtering process. The...
Since state-of-the-art smartphones do usually not comprise barometers, ubiquitous 3D indoor positioning requires a compensation of the missing height information. A pedestrian activity classification (PAC) algorithm enabling the activity detection of going up- or downstairs can deliver this missing information. Additionally, this PAC can be used for the support of pedestrian dead reckoning (PDR) algorithms...
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