Gravity variations much bigger than previously thought

A joint Australian-German research team led by Curtin University's Dr Christian Hirt has created the highest-resolution maps of Earth's gravity field to date—showing gravitational variations up to 40 percent larger than ...

'Optical clock' yields split-second success

Physicists said Tuesday that a so-called optical lattice clock, touted by some as the time-measuring device of the future, had passed a key accuracy test.

Humanoid robot that sees and maps

(Phys.org) —Computer vision algorithms that enable Samsung's latest humanoid robot, Roboray, to build real-time 3D visual maps to move around more efficiently have been developed by researchers from the University of Bristol.

India launches satellite for new navigation system

India launched the first of seven satellites for its domestic satellite navigation network Tuesday, its space centre said, in the first step to creating a scaled down version of the US Global Positioning System.

India to launch satellite navigation system

India will Monday launch the first stage of its domestic satellite navigation network which will eventually provide services both to civilians and the military and is similar to the US Global Positioning System, officials ...

Pakistan adopts Chinese rival GPS satellite system

Pakistan is set to become the fifth Asian country to use China's domestic satellite navigation system which was launched as a rival to the US global positioning system, a report said Saturday.

GPS solution provides 3-minute tsunami alerts

Researchers have shown that, by using global positioning systems (GPS) to measure ground deformation caused by a large underwater earthquake, they can provide accurate warning of the resulting tsunami in just a few minutes ...

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