GNSS

Elliptically orbiting Galileo satellites to start broadcasting navigation messages

August 2, 2016By

News courtesy of CANSPACE Listserv. According to two Notice Advisories to Galileo Users (NAGUs), the two Galileo satellites launched into elliptical orbits in August 2014, GSAT0201 using PRN code E18 and GSAT0202 using PRN code E14, will start transmitting navigation messages for test purposes this Friday, Aug. 5. The Signal Health Status (SHS) flags will be set to “Test” and... read more

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Australia drifts away from GNSS measurements

August 2, 2016By
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Australia is moving north at the rate of approximately 2.75 inches per year, causing it to be out of sync with GNSS positioning by nearly five feet, reports the BBC. Scientists are working to correct the measurement problems this situation creates. The shift, caused by normal tectonic movement, is causing a discrepancy that would interfere in the future use of self-driving cars.... read more

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Trimble acquires Axio-Net GmbH to reinforce European presence

August 1, 2016By
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Trimble has acquired Axio-Net GmbH from Airbus Defence and Space. Based in Hannover, Germany, Axio-Net is a provider of GNSS corrections and professional data services serving Germany, the United Kingdom and Benelux. Financial terms of the transaction were not disclosed. Axio-Net, founded in 2008, delivers both real-time and post-processed network real-time kinematic (RTK) solutions to a broad range of users including surveyors,... read more

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NDGPS loses interior, keeps coast

July 25, 2016By and

Heartland Corrections Services Now Commercial or WAAS-only The U.S. Coast Guard, Department of Transportation and Army Corps of Engineers have reduced the number of Nationwide Differential Global Positioning System (NDGPS) sites that will be decommissioned. The course correction keeps a coastal and Mississippi River network of stations largely intact, while discontinuing inland services. Last year at this time, the agencies... read more

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Iridium/GPS carrier phase positioning, fault detection

Interest in the Iridium constellation as a potential alternative and back-up provider of positioning and timing has increased with the announcement of impending operational capability. Overall concept information is hard to come by, but this 2009 ION GNSS paper gives an early look. The text is from the paper’s abstract. The iGPS high-integrity precision navigation system combines carrier phase ranging... read more

ComNav releases new-generation OEM Boards

July 18, 2016By
K708 OEM Board

ComNav Technology has released its advanced K700 and K708 GNSS OEM boards to the international market. With the advanced ComNav application-specific integrated circuit (ASIC) chip, K7-series OEM boards have higher observation data quality and lower power consumption compared to previous K5-series OEM boards. The data output rate also increases substantially by working with a new Atmel processor. As a cost-effective GNSS OEM board, K700 is... read more

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Naval Academy brings back celestial navigation courses

July 18, 2016By

The Naval Academy has brought back celestial navigation courses, recognizing the importance of giving future naval officers the ability to find their position out at sea in case GPS is unavailable through jamming or hacking. read more

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BeiDou industry on path similar to GPS

July 13, 2016By
Startup companies seven years ago have grown into large, vertically integrated higher end suppliers, opening the low-cost, general purpose market sector for new entrants.

The domestic Chinese satellite navigation industry is thriving, based on the growing availability of Beidou signals combined with the baseline GPS constellation. read more