Surveying and mapping are jobs of courage and determination exploring the unknown, risking death in malaria-infested jungles, ...

Observations suggest a major melting event at the Ross Ice Shelf was connected to atmospheric turbulence. The Ross Ice Shelf ...

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 ...

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 ...

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 ...

WHERE HAVE ALL THE SYSTEMS GONE, long time passing? Radionavigation systems, that is (and apologies to Pete Seeger). If we look at the 1990 Federal Radionavigation Plan (FRP), published by the U.S.

1. “SV Number” refers to space vehicle number. “PRN Number” refers to the satellite’s unique pseudorandom noise code. 2. Clock: Rb = rubidium; Cs = cesium. 3. “Launched” and “Usable” dates are based ...

The smartphone antenna’s poor multipath suppression and irregular gain pattern result in large time-correlated phase errors that significantly increase the time to integer ambiguity resolution as ...

No audio available for this content. We’ve heard a lot in the news recently about GPS spoofing, mostly centred on the story of ship spoofing in the Black Sea. Between June 22-24, a number of ships in ...

Limited landing area as well as interference due to wind disturbance and wave motion make shipboard landings of unmanned aerial vehicles (UAVs) extremely difficult. Use of UAVs at sea can enhance the ...

No audio available for this content. (Image: Authors/Trimble) For those who want high accuracy, but don’t need it full time, high-productivity dedicated professional solutions may not be ...

About 40 years ago, we had a vision for positioning, navigation, and timing (PNT). That vision was more than successful, and became known as GPS. In some respects we have been almost too successful: ...