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A Probabilistic Map Matching Method for Smartphone GPS data

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Route choice modeling with network-free data

Michel Bierlaire, Emma Frejinger

Route choice models are difficult to design and to estimate for various reasons. In this paper we focus on issues related to data. Indeed, real data in its original format are not related to the network used by the modeler and do therefore not correspond t ...

2008

GPS/INS Integrity in Airborne Mapping

Jan Skaloud, Yannick Stebler

The quality of the laser point cloud georeferencing in airborne laser scanning missions is largely related to the quality of the GPS solution. The latter is obtained by post- processing the differential carrier-phase measurements in order to reach the requ ...

2008

Route choice modeling with network-free data

Michel Bierlaire, Emma Frejinger

2007

Three challenges in route choice modeling

Michel Bierlaire, Emma Frejinger

Route choice models play an important role in many aspects of transportation analysis, when the usual shortest path paradigm is too unrealistic (real-time information systems, traffic simulation, etc.). Developing operationnal route choice models involves ...

2007

Map-matching for pedestrians via Bayesian inference

Michel Bierlaire, Bertrand Merminod

A navigation process is to start from a known (initial) position and to ensure a continued localisation of the user during the movement. Consider a pedestrian navigation system which contains a GPS receiver and a set of inertial sensors connected with the ...

2006

Bayesian Approach for Indoor Pedestrian Localisation

Michel Bierlaire, Bertrand Merminod

The principal concept of navigation is to start from a known (initial) position and to ensure a continued and reliable localisation of the user during his/her movement. The initial position of the trajectory is usually obtained via GPS or defined by the us ...

2006

Bayesian Approach for Indoor Pedestrian Localisation

STRC 20062006

Acoustic node calibration using helicopter sounds and Monte Carlo markov chain methods

Volkan Cevher

A Monte-Carlo method is used to calibrate a randomly placed sensor node using helicopter sounds. The calibration is based on using the GPS information from the helicopter and the estimated DOA's at the node. The related Cramer-Rao lower bound is derived an ...

2004

Photogrammetry-derived Navigation Parameters for INS Kalman Filter Updates

Jan Skaloud, Bertrand Merminod, Fadi Atef Bayoud

In this paper, a GPS-independent mobile navigation and mapping system is introduced. This system employs the photogrammetric intersection to determine the coordinates of the surrounding objects and then it uses these newly known objects to compute its own ...

2004

Position+Attitude from GPS+INS for RTK Airborne Sensoring

Phillip Tomé, Telmo Cunha

This is a presentation of the techniques used to process inertial and GPS data collected during an airborne gravimetric and altimetric survey in order to obtain absolute position and attitude estimates of the sensors mounted on board the aircraft. For high ...

1999