TAG: jamming

Poll: Experiences with jamming, spoofing and RF interference

November 14, 2016By
jimi-purple-haze

Not with Purple Haze, but with signal interference — although, come to think of it, the two may be not unalike, phenomenologically. The October reader’s poll asked “Have you directly experienced any of the following? Check all that apply. GPS/GNSS jamming. GPS/GNSS spoofing. Unintentional RF interference. RF interference from unknown source; unknown whether intentional or not. None of the above.... read more

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Expert Opinions: Testing and simulating against GNSS jamming, spoofing

November 8, 2016By
satellites-500x150

Q: What special considerations should be taken into account for testing and simulating against GNSS jamming and spoofing?   A: Current integrations of GPS include a controlled reception pattern antenna (CRPA). Testing with a standard interference or jamming source will not provide accurate results. Wavefront generator simulators are capable of outputting signals that correctly stimulate the GPS receiver’s antenna electronics.... read more

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Make it real: Developing a test framework for PNT systems and devices

OPENING GRAPHIC

Tests of the robustness of commercial GNSS devices against threats show that different receivers behave differently in the presence of the same threat vectors. A risk-assessment framework for PNT systems can gauge real-world threat vectors, then the most appropriate and cost-effective mitigation can be selected. Vulnerabilities of GNSS positioning, navigation and timing are a consequence of the signals’ very low... read more

Canada, US workshops focus on PNT threats

October 26, 2016By
highprecision-gps-l1-receiver-category

Two workshops convened in recent weeks in the U.S. and Canadian capitals, respectively, sought to bring into focus looming threats to the nations’ positioning, navigation and timing capabilities and critical infrastructures. Some of the threats are pervasive — jamming and spoofing — and formed the general topic of the Canadian workshop. Some threats are specific — powerful terrestrial transmitters overwhelming... read more

Are you experienced? Tell us about jamming, spoofing, RF interference encounters

October 11, 2016By

We talk a lot about — and publish a lot of technical articles about — GPS/GNSS jamming, spoofing and unintentional RF interference in GPS World magazine and on this website. Clearly it is an emerging and potentially huge problem. How much of it goes on right now?  Tell us very briefly (10 seconds it will take) if You are experienced... read more

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Expert Opinions: OEM R&D budget for mitigation of jamming

August 8, 2016By

Q: What percent of a GNSS designer or manufacturer’s R&D budget should be devoted to mitigation of jamming? A: Solving for jamming, intentional or unintentional, in the design of any GNSS technology platform is no longer an option. How much any one company spends is largely a function of how much is spent on engineering overall and of how much... read more

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FAA issues GPS interference flight advisory

June 9, 2016By
GPS Interference testing this June on the West Coast of the United States.

[[Editor’s note: After this story was posted, and after the Navigate! enewsletter containing it was sent out to 27,128 subscribers, GPS World received notice that in fact the U.S. Navy  canceled plans to jam GPS signals in the vicinity of the China Lake, California, Naval Air Weapons Station. The Aircraft Owners and Pilots Association (AOPA) had raised concerns about the... read more

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GNSS jam-proof test range ready for customer testing

May 25, 2016By
Locatalite transceiver installation in the White Sands Missile Range Ultra High-Accuracy Reference System, provided by the U.S. Air Force for testing equipment under conditions of GPS jamming.

A new dimension in real-world PNT testing has arrived. One of the most critical things to predict for chips, receivers and devices using alternative or back-up PNT technologies is how they will actually perform without GPS. Filling this need, the U.S. Air Force 746th Test Squadron has declared Initial Operational Capability (IOC) for its new truth reference, the Ultra High-Accuracy... read more