GPS World provides almanac data for readers to use along with a number of resource links to other authority sites.

Controlled reception pattern antennas (CRPAs, pronounced “serpers”), adaptive antennas, null-steering antennas, beamforming antennas… You’ve probably heard of at least one of those terms in any ...

Timing from atomic clocks is now an integral part of data-center operations. The atomic clock time transmitted via Global Position System (GPS) and other Global Navigation Satellite System (GNSS) ...

GPS World webinars are a valuable resource for learning more about GNSS, UAVS, and a number of other important topics. Learn more about GPS webinars.

Recent changes in hardware and standards make one-meter accuracy possible, in some cases as soon as this year.

To further enhance the benefits of combining space-based geodetic techniques, the European Space Agency (ESA) has established the Genesis mission.

For this column, the file of bench marks provided on the NGS Geoid18 web page were combined with the published ellipsoid, orthometric, and Geoid18 heights from NGS’ datasheet. The difference between ...

You may have heard about “NMEA data” with respect to GPS. NMEA can be confusing because there are a few NMEA messages, not just one.

Experts answer questions about taking advantage of many satellites and corrections services while combating spoofing and jamming increases complexity.

In the early 19th century, as the sun moved across Britain from east to west, people set their clocks to local mean time, so that noon in Greenwich would occur about 16½ minutes before noon in ...

In this cover story on simulators, we discuss these challenges with experts at four simulator manufacturers including CAST Navigation, Spirent Federal, Spirent Communications, Safran Federal Systems ...

What is a mobile GNSS solution? Are the terms “mapping grade” and “resource grade” still useful? Who is using which devices for which tasks? Bernhard Richter, VP Geomatics at Leica Geosystems, which ...