Global Navigation Satellite Systems Engineering, Policy, and Design
Global Navigation Satellite Systems Engineering, Policy, and Design
FIGURE 1: System architecture Cooperative vehicle safety applications should preferably have two-meter horizontal accuracy and six-meter vertical accuracy, all with a 95-percent availability….
By Inside GNSS
FIGURE 1: GPS/GLONASS L1 frequency band As is well known, Galileo will become the European complement to the U.S. Global Positioning system. But…
By Inside GNSS
A GNSS signal simulator is mainly used to simulate GNSS signals transmitted by navigation satellites, propagated through the Earth’s atmosphere, and received by…
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Anechoic chamber test site at U.S. Naval Air Systems Command (NAVAIR) facility in Patuxent River, Maryland Interference can pose a threat to the…
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2011 Case Western Reserve team winning robotic lawnmower A team from Case Western Reserve University in Cleveland, Ohio took home the top $15,000…
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This is a 1993 photo of Walter, a German astronaut. He exemplifies the fearless approach to experimentation and the spirit of fun that…
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Astroclock This colloquium will explore the implications of redefining UTC in astrodynamics, astornomy, geodesy, navigation, remote sensing and related fields.
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MD 2011 trajectory (NASA) A schoolbus-sized asteroid grazed the Earth’s atmosphere around 1:00 P.M. (EDT) on June 27. It was 7,600 miles (12,300…
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On June 27, the Supreme Court decided to accept a 2005 Washington D.C. warrantless tracking case that illustrates how confusing GPS satellite positioning…
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Detail of India’s GAGAN system, from a presentation by Dr. S.V. Kibe. For full diagram: The communications satellite that carries India’s GPS-Aided Geo…
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Much of the research into the possible effects of the planned LightSquared cellular broadband transmissions near the GPS L1 band have focused on…
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Would-be cellular broadband company LightSquared promised a Congressional subcommittee Thursday (June 23, 2011) that it would scale back its proposed wireless system and…
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The House Appropriations Committee approved its version of the Fiscal Year 2012 (FY12) Department of Defense Appropriations Act (H.R.2219) on June 14, cutting…
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LightSquared’s proposed broadband service may cause trouble for GNSS receivers, such as this one, that use commercial satellite augmentation services. The Senate is…
By Inside GNSS
