Vietnam successfully used Galileo positioning signal

Hanoi University of Technology has just succeeded in locating through the open service of Galileo global positioning satellite system being used by Europe.

This is the first time an Asian team has published results that demonstrate the ability to use Galileo location services in the region.

Galileo positioning system is a global positioning satellite system (GNSS) built by the European Union (EU). Galileo is different from American GPS and GLONASS of the Russian Federation in that it is a navigation system operated and managed by civilian and non-military organizations.

For current users, due to the popularity of technology as well as devices, GPS is still almost the only option, but it is essentially a navigation system for military purposes under management. Direct management of the US Department of Defense, so it does not provide assurance of accuracy and reliability of civil location services. In some situations where conflicts occur, GPS may stop providing civil services.

Location determined by Navisoft receiver developed by NAVIS
use open location Galileo E1 Open Service
(Receiving antenna signal placed on top of Library building
Ta Quang Buu, in the campus of Hanoi University of Science and Technology).

"Therefore, in 2003, the EU built a satellite system called Galileo to overcome the disadvantages that GPS encountered. Galileo promises to provide users with high-precision and reliable location services , " he said. La The Vinh, deputy director of the International Center for Research and Use of Satellite Positioning Technology (NAVIS) said.

The system is expected to be completed in 2020, with orbits of 27 satellites. To date, the Galileo system has four satellites operating in orbit, with two satellites launched in mid-October last year. These satellites cater to the system's In-Orbit Validation phase. In principle, to use location services provided by the Galileo system requires the receiver to receive signals from at least four satellites at the same time.

On December 17, 2012, the NAVIS Center succeeded in receiving and decoding Galileo system signals, but at that time the test system delivered fake news, containing no valid data, so it could not be used. Use location services.

On March 27, from 9h15 to 11h, for the first time, all 4 test satellites PFM, FM2, FM3, FM4 appeared in Hanoi sky and broadcast standard positioning messages of open services Galileo E1 Open Service.

Location of 4 Galileo satellites and 12 GPS satellites in the vote
Hanoi sky at the time of collection. (Photo: NAVIS)

At that time, the Navisoft receiver developed by NAVIS Center received the signal, decoded the positioning message and finally succeeded in locating it using the open location service of Galileo system. The image above indicates the location identified by Navisoft (yellow points).

In addition, the Navisoft receiver of NAVIS is also capable of operating with GPS system signals, as well as the ability to simultaneously coordinate signals coming from GPS and Galileo systems for a navigation and navigation solution. general.

Becoming the first research group in Asia to successfully announce the use of Galileo positioning services has important implications for Hanoi University of Technology in particular and Vietnam in general, in mastering and develop multi-system positioning solutions, improve the accuracy, reliability of location services and especially reduce dependence on individual positioning systems.

As planned, the Galileo system began providing location services in 2015, and completed in 2020.