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CMC, Hexagon Partner on GNSS Jamming, Spoofing Solution CMC Electronics and Hexagon's autonomy and positioning division are developing technology that will mitigate global navigation satellite system (GNSS) jamming and spoofing using a multi-constellation, multi-frequency GNSS platform. Multi-constellation systems can receive position, navigation, and timing signals from more than one satellite navigation network, such as the U.S. GPS, Europe’s Galileo, Russia’s Glonass, and others. Working with the autonomy and positioning division of Hexagon, CMC has made its “next-generation receiver,” which is certified to DO-254 level-A standards and incorporates Hexagon’s technology. The receiver also integrates inertial measurement unit inputs, as well as controlled reception pattern antennas. These antenna arrays can detect the difference in the direction between legitimate GNSS signals and jamming signals. Spacial filtering allows the receiver to remove the unwanted signals. According to CMC, “What we see our customers experiencing is typically jamming on one or two bands at a time. If they’re using a multi-constellation receiver, they can rely on the non-jammed signals to maintain their position. There are significant costs and logistical challenges to jamming or spoofing multiple GNSS bands simultaneously, so each additional band of signal diversity makes it more difficult to jam or spoof the receiver.” “As leaders in the industry, we are setting a new standard of excellence by introducing a new era of high-precision, high-performance GNSS solutions to the market,” said CMC navigation systems business unit director Nick Chalkiadakis.