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February 28, 2019

Report: Russian Navy Gets New Precision Terrestrial System to Backup GPS/GLONASS

According to a news report,“Sprut-N1 [a] new-generation precision navigation radio system (RNS) has been created for the Russian Navy. It will determine geographic location, speed and altitude with a precision superior to that of GLONASS and GPS. The coordinates are determined by ground stations of the system which transmit coded signals to warships and aircraft. The main advantage against satellite navigation is that the signal of the high-tech system cannot be jammed, the Izvestia daily writes.”

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By Dana A. Goward
February 14, 2019

Government Researchers Working to Address GPS Vulnerabilities

Two recent reports have underscored the threats to the GPS system from space-capable adversaries. Both the Worldwide Threat Assessment, released Jan. 30 by the Senate Select Committee on Intelligence, and theDefense Intelligence Agency’s newly released Challenges to Security in Spacedetail the potential for China, Russia and others to damage the constellation or disrupt its signals.

With worries mounting about these risks, and the more mundane but still harmful prospect of regional jamming or spoofing, organizations throughout the U.S. government are working on ways to address vulnerabilities and find ways to operate without GPS.

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By Dee Ann Divis
February 13, 2019

Working Papers: Speed Verification in the Smart Tachograph

The Smart Tachograph (ST), the new revision of the Digital Tachograph (DT), aims to improve safety in the transportation sector by monitoring the behavior of commercial drivers. For this purpose, data from several sensors, including a GNSS receiver, are recorded, processed and cross-validated. In this article, the motion conflict procedure adopted by the ST is reviewed and experimentally evaluated using data collected in light urban and highway environments.

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By Günter W. Hein
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