Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Mobile phone positioning helps navigate in the concrete jungle

16.05.2006


A man gets lost when hiking. He is unable to tell the rescue service his exact position even though his mobile is working. Meanwhile, a pedigree dog, the apple of the owner’s eye, runs off. What to do these people do?



Mobile phone positioning helps locate lost people quickly and reliably. In the future, the volume of positioning services is expected to grow and their quality improve when the US GPS service is complemented by the European Galileo satellite positioning system.

However, a number of open issues remain in the utilisation of the new satellite positioning technology. Professor Markku Renfors, Head of the Institute of Communications Engineering at the University of Tampere, has led a research project exploring ways of combining various positioning technologies as economically and reliably as possible.


One of the things studied was how to use different positioning technologies side by side. The project was launched to ensure that the six companies involved possessed the capabilities to make use of the Galileo satellite positioning system, the upgraded GPS and the positioning potential offered by the communications networks in their products.

According to Renfors, it was possible to combine the positioning technologies evaluated in the project extensively, which will facilitate commercialisation.
For example, the efficiency of signal processing within the units can be improved to reduce power consumption and lower the price.

Signals reach indoors

One of the main challenges was to ensure that positioning works indoors and in the "concrete jungle" where high-rise buildings interfere with signal reception.

"For one thing, the acceleration sensors included in the units can be used as positioning aids. They can be used to calculate the distance and direction of movement from the starting point, which makes it possible to determine their position exactly even if the satellite signal is temporarily lost. Also, pseudolites, or fake satellites, can be installed indoors to transmit a GPS-type signal", Markku Renfors says.

The pseudolites were developed by the corporate partner in the project, Space Systems Finland in Espoo. For instance, pseudolites are used to control mining vehicles underground where conventional satellite signals do not reach.

The project, which is part of the AVALI Technology Programme of Tekes, the Finnish Funding Agency for Technology and Innovation, was coordinated by the Digital Media Institute of the Tampere University of Technology.

The project was launched in 2003 and ended in February 2006. The companies involved in the project were the Elisa Corporation, European Communications Engineering Oy, Fastrax Oy, Nemo Technologies, Space Systems Finland Oy and u-Nav Microelectronics Finland Oy.

Eeva Ahola | alfa
Further information:
http://www.tekes.fi/avali

More articles from Information Technology:

nachricht Ultra-precise chip-scale sensor detects unprecedentedly small changes at the nanoscale
18.01.2017 | The Hebrew University of Jerusalem

nachricht Data analysis optimizes cyber-physical systems in telecommunications and building automation
18.01.2017 | Fraunhofer-Institut für Algorithmen und Wissenschaftliches Rechnen SCAI

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>