Automated GNSS Performance Tests For ERA-Glonass Modules

By Rohde & Schwarz

Effective January 1, 2017, all newly registered cars, trucks and buses in Russia and the Eurasian Customs Union must be equipped with the ERA-Glonass automatic emergency call system. In an emergency, an in-vehicle module transmits vehicle position data and other information via a cellular link. A new option for the R&S®SMBV100A vector signal generator now delivers standard-compliant, fully automated tests of the GNSS receiver integrated in the module.


In recent years, both the Russian Federation and the European Union have launched initiatives to introduce automatic in-vehicle emergency call systems with the goal of significantly reducing response times to serious traffic accidents. In an emergency, the system automatically places a call to the near-est public safety answering point (PSAP). Users can also make emergency calls manually. In both cases, the system transmits a standardized minimum set of data (MSD) including informa-tion such as the number of passengers and time and place of the accident and establishes a voice connection to the PSAP. In addition to Russia’s ERA-Glonass, a European equiva-lent emergency call system referred to as eCall will soon be available. The two systems are based on the same architec-ture, have the same core functionalities, and are harmonized and interoperable (Fig. 1). ERA-Glonass, however, does offer additional functions such as SMS transmission of MSDs in case that no data or voice connection can be established with a PSAP.

System architecture

Fig. 1: Architecture of an automated in-vehicle emergency call system. Both ERA-Glonass and eCall are based on this setup.

Certification of ERA-Glonass modules
The in-vehicle system (IVS) is made up of various components including a GNSS receiver to determine the time and place of an accident, a modem with an antenna to send an emergency call, microphones and loudspeakers for voice communications and a push button for manually activating emergency calls. Before an IVS can be used, it must undergo a certification process encompassing diverse standardized tests. The test specifications applicable for ERA-Glonass modules are laid down in the GOST R standards issued by the Federal Technical Regulation and Metrology Agency in Moscow. The tests specified in these standards fall into two main categories, which will be discussed in the following…

Register to download the full article


Start typing and press Enter to search