STMicroelectronics satellite-tracking chips work with all world major satellite nav systems

-April 19, 2013

ST and European Space Agency performed the first-ever position fix using GALILEO satellites

Introduced as the world’s first single-chip positioning device for multiple global navigation systems in January 2011, ST’s Teseo II is a single-chip standalone satellite receiver able to use signals from all of the satellite navigation systems, including GPS, the European GALILEO system, Russian GLONASS and Japanese QZSS3. This allows the receiver to keep many satellites in sight, delivering advantages such as shorter time-to-first-fix and continuous tracking with enhanced accuracy, even under challenging circumstances such as driving through urban canyons.

STA8088FG system block diagram shows the high level of integration in this solution

STMicroelectronics announced that its Teseo II single-chip satellite-tracking ICs were successful in the very first ground location test using Europe’s own independent navigation system, Galileo. The tests were conducted in collaboration with the European Space Agency (ESA).

In March 2013, the first position fix of longitude, latitude and altitude using the four Galileo satellites currently in orbit was performed by the European Space Agency (ESA) at its Technology Centre in the Netherlands and by ST at its GNSS (Global Navigation Satellite System) software development labs in Naples, Italy.

ST and ESA conducted the historic static and dynamic tests using a rooftop antenna with a clear view of the satellites (static) and from a mobile test-bed unit travelling in a normal user environment (dynamic). The Teseo II receiver was able to track and produce a 3D fix over the entire path of the mobile unit, using only the 4 Galileo IOV (In-Orbit Validation) satellites.

STA8088 Teseo II application demonstrates the  ability to process GPS, Glonass and Galileo signals

ST and ESA plan to continue the joint tests, initially as a combined multi-constellation fix with GPS and/or GLONASS1 satellites, then later in the year, when more Galileo2 satellites are available, they also plan Galileo-only tests in a hostile environment.

ESA and ST have been cooperating on a project to evaluate the performance of low-cost consumer and automotive GNSS receivers with the Galileo signals, combining ESA’s expertise in knowledge of the signals, both theoretical and from monitoring, with ST’s 20 years of experience in producing chips to process satellite navigation signals.
Low-cost receivers have narrower bandwidth and less-capable antennas, but in the real world must operate in much more hostile situations than professional test receivers.  As the consumer receiver must operate in urban-canyon situations when many of the signals are reflections, greatly weakened and significantly distorted, ST’s Teseo II, with its multi-constellation capability and outstanding sensitivity, makes a perfect fit for many different consumer navigation applications.
For more information go to the STMicroelectronics website



1 The Global Navigation Satellite System (GLONASS) is based on a constellation of active satellites which continuously transmit coded signals in two frequency bands, which can be received by users anywhere on the Earth's surface to identify their position and velocity in real time based on ranging measurements. The system is a counterpart to the United States Global Positioning System (GPS) and both systems share the same principles in the data transmission and positioning methods. GLONASS is managed for the Russian Federation Government by the Russian Space Forces and the system is operated by the Coordination Scientific Information Center (KNITs) of the Ministry of Defense of the Russian Federation.


2 The Galileo program is Europe's initiative for a state-of-the-art global satellite navigation system, providing a highly accurate, guaranteed global positioning service under civilian control. The fully deployed system will consist of 30 satellites and the associated ground infrastructure. Galileo will be inter-operable with GPS and GLONASS, the two other global satellite navigation systems.


3 The Quasi-Zenith Satellite System (QZSS) is a Japanese regional satellite navigation system that, in addition to conventional GNSS signals, transmits an augmentation signal called LEX (Lband Experimental Signal).

This project will investigate the use of the QZSS LEX signal for delivering high accuracy real-time positioning (especially RTK-PPP) on a national basis in support of a future national positioning infrastructure (NPI).

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