Opinions

Directions 2017: GPS navigates the future

December 2, 2016By
Col. Whitney with the Green Monster, mascot of the U.S. Air Force GPS Directorate.

I’m proud to be a part of the accomplishments of the men and women of the Space and Missile Systems Center’s Global Positioning System Directorate at Los Angeles Air Force Base in El Segundo, California. The year has been extremely challenging, but looking back on 2016, we have taken real steps forward to modernize the GPS Enterprise and the way... read more

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The launch of 4 and declaration of Galileo operations

November 30, 2016By
Already above Earth’s atmosphere, Ariane’s aerodynamic fairing is jettisoned and the four Galileo satellites enter space for the first time. (Image: ESA)

“Now that we can rely on the powerful Ariane 5, we can anticipate the quicker completion of Galileo deployment, permitting the system to enter full operation,” said Paul Verhoef, ESA’s Director for the Galileo Programme and Navigation-related Activities, following the successful launch Nov. 17 of four satellites at once. Verhoef made the following further remarks to GPS World regarding Galileo’s future. The... read more

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UAV Update: Fuel cells, Droneboxes and hostile drones

November 16, 2016By

We might have thought of fuel cells in the past coming from historical problems way back on Apollo 13, or more recently in connection with advanced hybrid cars. But now it seems they are one source of long endurance flight for UAVs. Not really a surprise when there are claims of energy levels of 1000 watt/hour per kilogram versus 150... read more

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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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US military plans autonomous cargo-hauling and combat vehicles, drone swarms

November 9, 2016By
The Army's squad mission support transport robot (SMET).

Soldier-borne sensors, leader-follower cargo-hauling technology and tiny, hand-held unmanned aircraft are in the forefront of new technologies planned for U.S. warfighters, according to Maj. Gen. Robert M. “Bo” Dyess. The deputy director of the U.S. Army Capability Integration Center told AUVSI’s Unmanned Systems Defense keynote audience that developing tools and systems demanded by soldiers is key. He cited a recent... 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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Data collection of WGS 84 information — or is it?

November 2, 2016By
location

Location, location, location. It’s not just the tagline for real estate and sales; it’s about all of us, all of the time. Thanks to technology, everything revolves around location these days. It is in our cars, smartphones, exercise trackers, and even our packages. GPS has revolutionized so many things in our lives, but most people do not know how it... read more

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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