GNSS

US Coast Guard issues GPS jamming alert

January 23, 2016By

The U.S. Coast Guard issued a safety alert on Jan. 16, warning mariners of the potential detrimental impact to navigation caused by GPS interference or jamming. The warning emphasizes the importance of understanding how vessel equipment could be impacted by the loss of a GPS signal. The Coast Guard states that this past summer, multiple outbound vessels from a non-U.S.... read more

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Last Block IIF to replace oldest GPS satellite

January 22, 2016By
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On Feb. 3, the Air Force plans to launch the 12th, and last, satellite in the Block IIF series of modernized GPS spacecraft. The Air Force has produced 12 IIF satellites, featuring new clocks, new civil and military signals, and other upgrades for enhanced accuracy and robustness. Currently, 31 GPS satellites are in operational service, including 11 Block IIF satellites and 20 spacecraft from... read more

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India’s fifth navigation satellite launched

January 20, 2016By
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The fifth satellite in the Indian Regional Navigation Satellite System (IRNSS) constellation lifted off on time Jan. 20 from Satish Dhawan Space Center on Sriharikota Island, on India’s east coast. As in the previous four launches of IRNSS satellites, the navigation satellite rode aboard a Polar Satellite Launch Vehicle (PSLV). This is the 33rd launch for the PSLV. After the PSLV-C31 lift-off at 0401 GMT Wednesday (11:01... read more

Prize for GNSS opinions

January 19, 2016By

Geomatics specialist Larry Tinney won the $50 gift card in our January drawing among takers of the Reader Poll. You can win too! Take the poll below by Feb. 22 to answer the question: What is the biggest challenge in simulating GNSS environments for testing products under development? All poll takers will be entered in a drawing for a $50... read more

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First GPS III satellite completes critical test

January 19, 2016By

The first GPS III satellite has passed a critical test, according to satellite builder Lockheed Martin. Rick Ambrose, executive vice president of Lockheed Martin Space Systems of Denver, tweeted that the satellite has successfully its thermal vacuum test (TVAC). Critical TVAC test for @usairforce’s first GPS III satellite successfully completed! pic.twitter.com/fYx6MJK4On — Rick Ambrose (@RickAmbroseSSC) January 13, 2016 Lockheed Martin Space... read more

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Fifth IRNSS satellite on schedule to launch

January 19, 2016By
IRNSS-1E spacecraft integrated with PSLV-C31, with the two halves of the heat shields. (Photo: IRNSS)

The fifth satellite in the Indian Regional Navigation Satellite System (IRNSS) constellation is ready for lift-off. IRNSS-1E will launch at 0401 GMT Wednesday (11:01 p.m. EST Tuesday) from Satish Dhawan Space Center on Sriharikota Island, on India’s east coast. As in the previous four launches of IRNSS satellites, the navigation satellite will ride aboard a Polar Satellite Launch Vehicle (PSLV). This is the... read more

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Optimal search strategies, open-interface receiver: New speakers for webinar on GNSS receiver design

January 13, 2016By
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New speakers have been announced for the Jan. 21 webinar “GNSS Receiver Design: New MEMS Components, Optimal Search Strategies.” read more

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DARPA hosts Proposers Day on new atomic clock

January 13, 2016By

The Defense Advanced Research Projects Agency (DARPA) is holding a Proposers Day on Feb. 1 to inform potential contractors about the Atomic Clock with Enhanced Stability (ACES) program. ACES is a potential $50 million program that seeks to develop battery-powered atomic clocks that work to provide warfighters with synchronization and precision timing capabilities during navigation, communications, electronic warfare and reconnaissance... read more

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