TAG: GPS

Iridium launches alternative GPS PNT service

May 23, 2016By

Iridium Communications Inc. has introduced its Satellite Time and Location (STL) service, an alternative or complement to traditional indoor and outdoor location-based technologies, and declared it ready for use. STL’s position, navigation and timing (PNT) technology is deployed through Iridium’s 66 cross-linked, low-earth orbit satellite constellation. Through Iridium satellites and in GNSS receivers, STL technology can work to verify GPS, GLONASS, Galileo and... read more

Launchpad: GPS compass, survey rental program

April 3, 2016By
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OEM GPS compass Alternative to magnetic-based sensors for manned or unmanned The VN-360 OEM GPS-Compass module provides an accurate, True North heading solution for systems integrators seeking a reliable alternative to magnetic-based sensors to improve the capabilities and performance of next-generation manned and unmanned systems. Unlike digital magnetometers that can be affected by ferrous materials, the VN-360 heading solution provides... read more

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Synergizing smartphones’ onboard GPS capability with KML files

February 29, 2016By
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At Caltrans District 7 in Los Angeles, we use the onboard GPS capability of smartphones to navigate in real time to the locations of proposed aerial targets and National Geodetic Survey (NGS) control stations. read more

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World dodges GPS bullet

February 24, 2016By
The plot shows how the anomaly event impacted one GPS timing receiver during the day. (Courtesy of Chronos Technology)

It happened in the blink of an eye. Less than a blink. Far less, actually. Slightly more than one one-thousandth of an eye blink, according to calculations. In that amount of time, one of your eyelashes traverses 10 micrometers on its journey toward your lower eyelid. And yet it was long enough to throw computers and communications systems around the... read more

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FY 2017 budget request includes $857 million for GPS

February 19, 2016By

The President’s Budget for Fiscal Year 2017 includes $847.362 million in Department of Defense funds and $10 million in Department of Transportation funds to sustain and modernize the Global Positioning System (GPS). Funds will go toward the GPS III program, including the new ground system (OCX), military user equipment, and wide-area augmentation through the Federal Aviation Administration (FAA). FY 2017... read more

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Out in Front: Resilient navigation and timing

January 11, 2016By
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Advocacy in the U.S. capital urges augmentation of GPS/GNSS with eLoran and other “complementary terrestrial PNT services to increase resilience.” See the Resilient Navigation and Timing Foundation’s website, rntfnd.org. This is assuredly a good thing, a worthy cause. I’ve come to believe, however, that true resilience goes beyond what we normally think of as position and timing sensors. Stimulus comes... read more

2015 in review: Year of the GPS for 2 and 19 SOPS

January 6, 2016By
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By 50th Space Wing Public Affairs, Schriever Air Force Base Throughout the years, GPS has achieved historic milestones and garnered recognition for its contributions to the betterment of humanity. 2015 was no different. GPS, operated by the dedicated men and women of the 2nd and 19th Space Operations Squadrons at Schriever Air Force Base, Colorado, is also the world’s largest military satellite constellation.... read more

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Expert Opinions: How many GNSS signals for a consumer-grade device?

December 23, 2015By
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Question: What is the optimum number of GNSS signals to include/process in a consumer-grade PNT device? A: A chip should support four signals, being GPS/GLONASS/Galileo/Beidou, but only process two of them — choice depending on region, geopolitical sensitivity, constellation availability — dropping to one to save power when satellite availability is good. Two constellations give enough satellites for accuracy and... read more

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