Hybrid cargo-level tracking system for logistics

In this paper, we propose a hybrid cargo-level tracking system for logistics. We highlight the special system requirements, discuss the design issues and identify the design principles. Then we propose an innovative hybrid system. As far as we know, this is the first system that exploits both infrastructure-based and infrastructure-less positioning schemes for practical cargo-level tracking. Compared with existing systems, the proposed system provides a ubiquitous cargo-level tracking solution with enhanced availability, reliability, and lower total costs. © 2010 IEEE.published_or_final_versionThe 71st IEEE Vehicular Technology Conference (VTC2010-Spring), Taipei, Taiwan, 16-19 May 2010. In Proceedings of 71st IEEE-VTC (Spring), 2010, p. 1-

Traffic congestion prevention system

Transport is one of the key elements in the development of any country; it can be a powerful catalyst for economic growth. However, the infrastructure does not give enough to the huge number of vehicles which produces several problems, particularly in terms of road safety, and loss of time and pollution. One of the most significant problems is congestion, this is a major handicap for the road transport system. An alternative would be to use new technologies in the field of communication to send traffic information such as treacherous road conditions and accident sites by communicating, for a more efficient use of existing infrastructure.  In this paper, we present a CPS system, which can help drivers in order to have a better trip. For this raison we find the optimal way to reduce travel time and fuel consumption. This system based on our recent work [1]. It´s new approach aims to avoid congestion and queues, hat assure more efficient and optimal use of the existing road infrastructure. For that we concentrate by analyzing the useful and reliable traffic information collected in real time. The system is simulated in several conditions, Experimental result show that our approach is very effective. In the future work, we try to improve our system by adding more complexity in our system

Building a personal symbolic space model from GSM CellID Positioning Data

Série : Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol. 7The context in which a person uses a mobile context-aware application can be described by many dimensions, including the, most popular, location and position. Some of the data used to describe these dimensions can be acquired directly from sensors or computed by reasoning algorithms. In this paper we propose to contextualize the mobile user of context-aware applications by describing his/her location in a symbolic space model as an alternative to the use of a position represented by a pair of coordinates in a geometric absolute referential. By exploiting the ubiquity of GSM networks, we describe a method to progressively create this symbolic and personal space model, and propose an approach to compute the level of familiarity a person has with each of the identified places. The validity of the developed model is evaluated by comparing the identified places and the computed values for the familiarity index with a ground truth represented by GPS data and the detailed agenda of a few persons

Outdoor location tracking of mobile devices in cellular networks

This paper presents a technique and experimental validation for anonymous outdoor location tracking of all users residing on a mobile cellular network. The proposed technique does not require any intervention or cooperation on the mobile side but runs completely on the network side, which is useful to automatically monitor traffic, estimate population movements, or detect criminal activity. The proposed technique exploits the topology of a mobile cellular network, enriched open map data, mode of transportation, and advanced route filtering. Current tracking algorithms for cellular networks are validated in optimal or controlled environments on a small dataset or are merely validated by simulations. In this work, validation data consisting of millions of parallel location estimations from over a million users are collected and processed in real time, in cooperation with a major network operator in Belgium. Experiments are conducted in urban and rural environments near Ghent and Antwerp, with trajectories on foot, by bike, and by car, in the months May and September 2017. It is shown that the mode of transportation, smartphone usage, and environment impact the accuracy and that the proposed AMT location tracking algorithm is more robust and outperforms existing techniques with relative improvements up to 88%. Best performances were obtained in urban environments with median accuracies up to 112 m

Structural Analysis of Positioning Methods at Sea

U radu se provodi strukturna analiza bitnih elemenata elektroničkih navigacijskih sustava pozicioniranja na moru, prvenstveno onih koji su u uporabi za trgovačke brodove. Obrađuju se satelitski sustavi, hiperbolni sustavi, goniometarski sustavi, sustavi inercijalne navigacije, uključujući i vrlo točne navigacijske sustave malog dometa. S obzirom na to da je oslanjanje na satelitske sustave preveliko (prije svega na GPS), traže se dopune i alternative GPS sustavu, to jest satelitskim sustavima pozicioniranja uopće. Tako, GPS je u cjelini vrlo osjetljiv (moguća ometanja, isključenja i sl.) i pod stalnim je vojnim nadzorom. Na prvomu mjestu misli se na već raspoložive sustave, poput hiperbolnih i inercijskih. Kao dopuna satelitskim sustavima pozicioniranja mogu se iskoristiti i sustavi malog dometa, npr. laserski i hidroakustički sustavi. Također je jedna od zanimljivih alternativa i mreža za mobilnu telefoniju (GSM, CDMA, UMTS...), koja uz mnoštvo usluga nudi i uslugu pozicioniranja. U pokrivanju morskog područja mislimo prije svega na priobalje.his work presents a structural analysis of the essential elements of the electronic navigation systems of the positioning at sea, principally those which have been used in merchant ships. This includes the analysis of the satellite, hyperbolic, radio direction finder, and inertial navigation systems, including very accurate close range navigation systems. As today\u27s navigators rely heavily on the GPS system, and the system itself is generally rather sensitive (jamming, switching off,…) and under military control, enhancements of the GPS and other satellite navigation systems as well as their possible alternatives among available electronic navigation systems have been explored. Firstly, hyperbolic and inertial systems are already available. Secondly, close range navigation systems such as laser and hydro-acoustic systems, can become alternatives. An alternative can also be the use of the wireless telephony networks (GSM, CDMA, UMTS etc.) for obtaining the ship\u27s position, possibly in cost navigation

Discovering user context with mobile devices : location and time

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.Includes bibliographical references (leaves 59-62).Life for many people is based on a set of daily routines, such as home, work, and leisure. If the activities in life occur in recurring patterns, then the context in which they occur should also follow a pattern. In this thesis, we explore using cell phones for learning recurring locations using only a timestamped history of the cell tower the device is connected to. We base our approach on an existing graph-based online algorithm, but modify it to compute additional statistics for offline analysis to obtain better results. We then further refine the offline algorithm to include time-partitioned nodes to resolve some observed shortcomings. Finally, we evaluate all three algorithms on a dataset of GSM readings over a one month period, and show how our successive modifications improved the locations found.by Ning Song.M.Eng

Hybrid approach to WiFi localization and tracking of mobile devices

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.Includes bibliographical references (p. 59-60).This thesis presents iNav - a hybrid system for 802.11-based localization targeted at low-power mobile devices. WiFi localization enables numerous location-based services and applications without requiring a separate GPS module, thus offering device cost and power consumption savings. iNav is a WiFi localization system targeted at low-power mobile devices, capable of utilizing multiple data sources to produce location estimates with accuracy higher than that of pure WiFi estimates. iNav uses a stochastic location estimation algorithm based on particle filters to integrate streams of WiFi access point observations and 3-axis accelerometer data. The system is tailored towards localization of vehicles and relies on a road network map to increase localization accuracy. iNav is designed with low-power devices in mind, and is capable of computing real-time location estimates on embedded devices like the iPhone.by Lev Popov.M.Eng