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No audio available for this content. Recent changes in hardware and standards make one-meter accuracy possible, in some cases as soon as this year. The transcript of a talk given to Android developers ...

GNSS jamming and spoofing pose a significant threat to global security, as satellite-based navigation and timing systems are utilized in various application fields, including critical infrastructure, ...

Russian satellites have caused GPS outages of as long as 10 seconds across Europe, according to a new research paper, authored in part by GNSS expert Todd Humphreys. Humphreys is head of the ...

No audio available for this content. Table 1. Preliminary 2013 U.S. GPS economic benefit estimates. (Chart: GPS World, based on data from author) This article is based on a presentation to the ...

See satellite constellation visibility and geometric dilution of precision (DOP) for any location on Earth.

Unmanned aerial vehicle (uav) used in the spoofing tests; owned by the University of Texas. A radio signal sent from a half-mile away deceived the GPS receiver of a UAV into thinking that it was ...

The technique of precise point positioning (PPP) is making inroads in the positioning industry. However, one issue hampering its more widespread adoption is the convergence time required for the ...

This update to a frequently requested article first published here in 1998 explains how statistical methods can create many different position accuracy measures. As the driving forces of positioning ...

You’ve probably heard of at least one of those terms in any discussion around GPS anti-jam technology for defense. Because they are all terms that describe essentially the same thing: a specialized ...

All construction work begins with surveying to map the site and generally ends with surveying to document what was done on it — called “as built.” Therefore, surveyors are the first to arrive at a ...

GPS services are critical for real-time information on positioning, navigation and time (PNT). Because of the highly accurate and continuous PNT solution provided by GPS in all weather conditions, ...