Modern satellite constellations such as OneWeb, Starlink and CENTISPACE promise global communications and navigation capabilities using low-Earth orbit (LEO) constellations. However, their precise ...

Recent eVTOL innovations, FAA-certified autonomous flight systems and UAV testbeds are reshaping urban air mobility and cargo automation.

Recent eVTOL innovations, FAA-certified autonomous flight systems and UAV testbeds are reshaping urban air mobility and cargo automation ...

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 earlier this year, this article ...

This article is based on a presentation to the National Space-Based Positioning, Navigation and Timing Advisory Board in June 2015. The study reported on at the meeting was requested by the National ...

GPS signals are so weak, they cannot be used reliably where they are obstructed. But if the satellites were much closer, their signals would be much stronger.

More Is Better 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 ...

By Daniel Shepard, Jahshan A. Bhatti, and Todd E. Humphreys u0007 Unmanned aerial vehicle (uav) used in the spoofing tests; owned by the University of Texas. A radio signal sent from a half-mile away ...

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) ...

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.

Automotive navigation is highly connected and capable of dynamically using high-resolution map information and vehicle and environmental data from the cloud.

The MEO debris environment is 100 times less dense than the LEO. The spatial density of orbital debris in LEO (up to 2,000 km), shown in Figure 1, suggests that LEO is the likely location where a ...