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Semantic Annotation of Global Positioning System Traces Activity Type Inference KU Leuven Hasselt University
Because of the rapid development of technology, larger data sets on activity travel behavior have become available. These data sets often lack semantic interpretation. This lack of interpretation implies that annotation of activity type and transportation mode is necessary. This paper aims to infer activity types from Global Positioning System (GPS) traces by developing a decision tree-based model. The model considers only activity start times ...
Visual-based simultaneous localization and mapping and global positioning system correction for geo-localization of a mobile robot Vrije Universiteit Brussel
This paper introduces an approach combining visual-based simultaneous localization and mapping (V-SLAM) and global positioning system (GPS) correction for accurate multi-sensor localization of an outdoor mobile robot in geo-referenced maps. The proposed framework combines two extended Kalman filters (EKF); the first one, referred to as the integration filter, is dedicated to the improvement of the GPS localization based on data from an inertial ...
Field Evaluation of Personal Digital Assistant Enabled by Global Positioning System Impact on Quality of Activity and Diary Data Hasselt University
A custom tool, PARROTS [Personal Digital Assistant (PDA) system for Activity Registration and Recording of Travel Scheduling] was developed to collect both activity data and global positioning system (GPS) data. This tool is currently deployed in a survey carried out on 2,500 households in Flanders (Belgium). The GPS-enabled PDA data collection tool features default answers, predefined drop-down lists, and many other graphical design elements. ...
Methodological considerations when quantifying high-intensity efforts in team sport using global positioning system technology KU Leuven
PURPOSE: Sprints and accelerations are popular performance indicators in applied sport. The methods used to define these efforts using athlete-tracking technology could affect the number of efforts reported. This study aimed to determine the influence of different techniques and settings for detecting high-intensity efforts using global positioning system (GPS) data. METHODS: Velocity and acceleration data from a professional soccer match were ...
The Annotation of Global Positioning System (GPS) Data with Activity Purposes Using Multiple Machine Learning Algorithms Hasselt University
The aim of this chapter is to evaluate whether GPS data can be annotated or semantically enriched with different activity categories, allowing GPS data to be used in the future in simulation systems. The data in the study stems from a paper-and-pencil activity-travel diary survey and a corresponding survey in which GPS-enabled Personal Digital Assistants (PDAs) were used. A set of new approaches, which are all independent of additional sensor ...
Artificial intelligence for global positioning system networks : theory & applications Ghent University
The importance of the book: The developments of computationally efficient techniques and algorithms that can satisfy the requirements of GPS networking (large networks, logistics, etc) are lagging behind the developments in the GPS technology and in the reduction of observing times. Therefore, the need for an effective computer based heuristic optimization techniques for GPS surveying is extremely necessary. The main purpose of this book is to ...
An OFDM based local positioning system KU Leuven
A sub cm precision local positioning system with a high update rate is proposed. This precision is possible because the high bandwidth that is available on 60 GHz. Using a OFDM based modulation scheme a very efficient ToA estimator can be made. Commercial CMOS technologies smaller than 40nm enable the use of mm-wave in a cost efficient manner. Two prototype ASICs have been made to implement the receiver which also includes a high speed analog to ...
Design and Implementation of an Ultrasonic Local Positioning System for Robot Guidance in a Heavy Liquid Metal Environment KU Leuven
In this paper, we describe a preliminary research towards the use of chirp coded spread spectrum techniques to implement a local positioning system to assist robot operators during manipulations and maintenance tasks in the future MYRRHA reactor. Preliminary test results in a simple experimental setup show promising results towards further developments of the system as the developed algorithms are able to discriminate between different ...
Experimental investigation of a thermally integrated carnot battery using a reversible heat pump/ organic rankine cycle : influence of system charge on performance of the reversible scroll compressor/expander and global performance Ghent University
Carnot batteries are considered a promising power-heat-power storage technology for mid- and large-scale applications. Recently, the use of dual-purpose thermal machines has been proposed in Carnot batteries. In such a system, a single unit acts as heat pump (HP, compressor operation) during charging or organic Rankine cycle (ORC, expander operation) during discharging. This configuration reduces the investment cost of the technology compared to ...