via Delft University of Technology
Researchers of Vrije Universiteit Amsterdam, Delft University of Technology and VSL have developed an alternative positioning system that is more robust and accurate than GPS, especially in urban settings. The working prototype that demonstrated this new mobile network infrastructure achieved an accuracy of 10 centimeter.
This new technology is important for the implementation of a range of location-based applications, including automated vehicles, quantum communication and next-generation mobile communication systems. The results were published in Nature today.
A lot of our vital infrastructure relies on global navigation satellite systems such as the US GPS and EU Galileo. Yet these systems that rely on satellites have their limitations and vulnerabilities. Their radio signals are weak when received on Earth, and accurate positioning is no longer possible if the radio signals are reflected or blocked by buildings. “This can make GPS unreliable in urban settings, for instance”, says Christiaan Tiberius of Delft University of Technology and coordinator of the project, “which is a problem if we ever want to use automated vehicles. Also, citizens and our authorities actually depend on GPS for many location-based applications and navigation devices. Furthermore, so far we had no back-up system.”
The aim of the project entitled SuperGPS was to develop an alternative positioning system that makes use of the mobile telecommunication network instead of satellites and that could be more robust and accurate than GPS. ‘We realized that with a few cutting-edge innovations, the telecommunication network could be transformed into a very accurate alternative positioning system that is independent of GPS”, says physicist Jeroen Koelemeij of VU Amsterdam. “We have succeeded and have successfully developed a system that can provide connectivity just like existing mobile and Wi-Fi networks do, as well as accurate positioning and time distribution like GPS.”
An atomic clock
One of these innovations is to connect the mobile network to a very accurate atomic clock, so that it can broadcast perfectly timed messages for positioning, just like GPS satellites do with the help of the atomic clocks they carry on board. These connections are made through the existing fiber-optic network. “We had already been investigating techniques to distribute the national time produced by our atomic clocks to users elsewhere through the telecommunication network”, says Erik Dierikx of VSL. “With these techniques we can turn the network into a nationwide distributed atomic clock – with many new applications such as very accurate positioning through mobile networks. With the hybrid optical-wireless system that we have demonstrated now, in principle anyone can have wireless access to the national time produced at VSL. It basically forms an extremely accurate radio clock that is good to one billionth of a second.”
Furthermore, the system employs radio signals with a bandwidth much larger than commonly used. “Buildings reflect radio signals, which can confuse navigation devices. The large bandwidth of our system helps sorting out these confusing signal reflections, and enables higher positioning accuracy”, Gerard Janssen of Delft University of Technology explains. “At the same time, bandwidth within the radio spectrum is scarce and therefore expensive. We circumvent this by using a number of related small bandwidth radio signals spread over a large virtual bandwidth. This has the advantage that only a small fraction of the virtual bandwidth is actually used and the signals can be very similar to those of mobile phones.”
Original Article: A navigation system with 10 centimeter accuracy
The Latest Updates from Bing News
Go deeper with Bing News on:
Alternative positioning system
- 6 Best GPS Fleet Tracking Software of March 2024
This comprehensive fleet management resource compiles the pros and cons of the best GPS fleet tracking software on the market today, so fleet managers can save time and accurately evaluate which ...
- Eos Positioning Systems: Building a System to Build an Island Resort
Starting in about 2010, he explained, RTK accuracy began to explode for geographic information systems (GIS) and unmanned aerial systems (UAS). “It’s accelerating,” he said. This has greatly increased ...
- Haley positioning herself as 'alternative candidate' to embattled Trump or as 'frontrunner for 2028'
Haley 'positioning herself for future', warning ...
- Topcon Positioning Systems: Topcon Champions Next Generation of Surveyors With Sponsorship of Get Kids into Survey Ambassador Hub
Next stage of support announced for project to promote surveying as a career for young students Topcon Positioning Systems has expanded its support of the Get Kids into Survey (GKiS) project ...
- The race to back up vulnerable GPS
While the Pentagon has long pursued augmented GPS capabilities, including using allied backup systems, it is now scoping a burgeoning commercial market promising innovative options to reduce GPS ...
Go deeper with Bing News on:
- GPS III Satellite
GPS III space vehicles will introduce new capabilities to meet higher demands of both military and civilian users. It brings the full capability to use M-Code in support of warfighter operations.
- AH-1W Super Cobra
Service: USMC Armament: 20 mm M197 Gatling cannon; Hydra 70 rockets; 5 in Zuni rockets; TOW missiles; AGM-114 Hellfire; AIM-9 Sidewinder. Speed: 170 knots Range: 58 nm Propulsion: 2x GE T700-GE ...
- Super PACs
Super PACs are a relatively new type of committee that arose following the July 2010 federal court decision in a case known as SpeechNow.org v. Federal Election Commission. Technically known as ...
- gps tracker
Radio trackers have become an important part of studying the movements of wildlife, but keeping one running for the life of an animal has been challenging. Researchers have now developed a way to ...
- The Best GPS Fleet Management Services of 2024
Get started in minutes 24/7 customer support Intuitive control dashboard Get started in minutes 24/7 customer support Intuitive control dashboard Human-reviewed incident videos Road- and cab-facing ...