ABERDEEN PROVING GROUND, Md. (June 2, 2016) -- Operation Desert Storm featured a nearly flawless invasion of Iraq across unchartered and unfriendly desert terrain in part because of the coalition's ...

A few weeks ago, China launched the final satellite in its BeiDou-3 satellite positioning system. Didn’t know that China had its own GPS? How about Europe’s Galileo, Russia’s GLONASS, or Japan’s QZSS?

THIS ARTICLE IS ABOUT VIRTUAL SATELLITES. No, we don’t mean physical objects that are almost satellites. That’s the common everyday meaning of the word virtual. We mean it in the sense used in ...

Europe’s satellite navigation system Galileo is already in use worldwide, usable by itself or in combination with the US Global Positioning System (GPS). Now a combined Galileo–GPS positioning fix has ...

Finding GPS unreliable in certain situations, the U.S. government is placing a high priority on developing a more reliable real-time position tracking technology whose signals won’t disappear in blind ...

Upgrades to satellites in orbit and systems down below will bring centimeter-level accuracy to the masses. GPS has already transformed many industries and enabled whole new ones, like ride-sharing. A ...

From the first time I used a Hertz GPS navigation system in lieu of a paper map on the front passenger’s seat, I have found the technology to be an almost indispensable tool. Its adoption over the ...

As drones become more valuable for combat, logistics and support operations, adversaries are countering that with intense electronic warfare to contest their ability to navigate via GPS signals. To ...

Figure 1: Diagram of cis-lunar space, which includes the real GPS sidelobe data collected on an HEO space vehicle. (All figures provided by the authors) As part of NASA’s increased interest in ...

GPS stands for Global Positioning System. GPS has changed the way drivers find their way from point A to point B. Maintained and operated by the U.S. Air Force, the GPS network consists of up to 31 ...