Inside GNSS Media & Research

MAR-APR 2018

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34 Inside GNSS M A R C H / A P R I L 2 0 1 8 with other services, so there is still room for innovation." Ritter returned to the question of what exactly Galileo intends to offer: "I don't think the GSA [European GNSS Agency] has made any statement on what the convergence time is going to be, so 20 centimeters in 30 seconds? 20 centimeters in a much faster time? Between Trimble, Fugro, Deere and Hexagon and others, we invest a lot of money into fast convergence and high accuracy, so it's actually an answer I would like to hear." "Just to be accurate, convergence is not a service that will be provided by Galileo," Fernandez said. "Convergence depends on the user algorithms and the information that these algorithms process, so we are providing part of this information, but we are not investing in developing convergence algorithms or developing end-user solutions. ese will 100% remain the business of compa- nies providing high accuracy services." As for the stated 20 centimeter accu- racy level, Fernandez revealed that that figure actually comes from a "higher level", which we take to mean a more political level. "We are talking about a very high- level text," he said, "which is a Com- mission 'Decision'. We have this bench- mark of 20 centimeters that expresses the willingness to relax accuracy com- pared to the service as it was originally defined as a payable service. This is in order to interfere less with existing markets and serve some end-consum- er applications. But we are just at t he start of the process of defining the ser- vice. e statistical c h a r ac ter i z at ion, t he user env iron- ments, the baseline algorithms, all that is still to come." Authentic GNSS While some partici- pants were making a splash, others were offering cash. "If you have any brilliant ideas we have some funding for you," said GSA Market Development Officer Reinhard Blasi. Then, having peaked everyone's interest, he proceeded to dis- cuss a number of other items of inter- est to the GSA, and to everyone else of course, such as market perspectives on authentication and the trend towards authentication as a priority for safety- critical applications. For the Galileo program, authenti- cation comes in or will come in three different forms. First, there is Open Service Navigation Message Authenti- cation (OSNMA), which will provide a basic level of authentication and some anti-spoofing protection. Blasi said, "is signal will be disseminated over the E1 frequency and is available for single- frequency users. It is aimed at consumer users and offered for f re e , a l re a d y pro - tot y ped a nd under testing." A muc h h ig her level of authentica- tion will be provided by t he robu s t a nd secure, limited-access Galileo Public Regu- lated Service (PRS). In between those two will be the "new" Galileo Commercial Service, comprising a data authentication signal that will be access-controlled and provided for a fee, based on the spreading code encryption of E6C plus some ancillary data in E6B/ E1B, including OSNMA. Interesting to note is that even just within the services provided by one GNSS constellation, Galileo, there will be mu ltiple aut hentication options available, with the choice falling to end users of determining their own vulner- abilities and security needs. But how, someone asked, will users know which level of protection they really need? Authentic Corrections Hexagon Positioning Intelligence Vice President of Innovation Sandy Ken- nedy said she sees military-like GNSS requirements, both in terms of accura- cy and security, moving into commer- cial areas. "ere is an increased risk to all established GNSS applications, and with new applications such as autono- mous vehicles and verif ied location for financial transactions coming on quickly, pseudorange-based position- ing is not sufficient. Authentic correc- tion sources are now as important as authentic GNSS signals." We simply cannot defend against all kinds of attacks, Kennedy said, and those attacks will evolve. So GNSS pro- viders will need to be vigilant, proactive and quickly reactive as new informa- tion presents. BRUSSELS VIEW GSA Market Development Officer Reinhard Blasi. Hexagon Positioning Intelligence Vice President of Innovation Sandy Kennedy

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