Liu Sixing, who was also known as Steve Liu, worked in L-3 Communications' space and navigation unit in New Jersey from 2009-2010 as a senior engineer.
In fact, most of the value-added uses for space today (GPS navigation, communications, direct broadcast TV and Radio, weather, photography and mapping) owe little to the Apollo program.
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Although spacecraft instruments are set to return photographs and compositional data, the encounter primarily is a test of Deep Space 1's autonomous navigation system, the last of 12 technologies the mission was designed to pioneer.
It is expected to improve substantially the availability and accuracy of timing and navigation signals delivered from space.
But America's fears are economic as well as military: it suspects that the EU might try, for instance, requiring aircraft entering its air space to use Galileo-based navigation systems, to the detriment of American firms with products based on GPS. And European countries, China and the like might develop weapons that are compatible with Galileo rather than GPS, which would mean American defence firms losing a competitive advantage.
Our experience tells us that the contribution made to U.S. national security in the future by space-based reconnaissance, communications, navigation and other systems will only continue to grow.
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The ATV certainly has the oomph (it is used to raise the altitude of the space station) and plenty of intelligence (its navigation technologies find and dock with the ISS unaided by human hands).
Its civilian space program has already brought China economic benefits in the fields of communications, navigation systems and resource exploration.
The navigation menu has moved from the top-center position to the space on the left column right below your profile picture.
It's certainly a unique approach to browsing from your couch -- and no less awkward then sluggishly dragging a virtual mouse across your TV -- but the view centric navigation can break the illusion of a well designed website, showing blank space on a page's borders if the user isn't looking at it dead-center.
To be sure, there are potential adversaries such as North Korea or Iraq which could try to employ space-based assets against our forces in a possible war, including for communications, navigation, targeting or surveillance missions.
The UK Space Agency, through its membership of Esa, is now arguing strongly for the Astrium autonomous navigation system to be incorporated into the 2018 rover.
This time, Dragon capsule's sensors, navigation computers and automated propulsion system, never before fully tested in the harsh environment of space, are supposed to maneuver the capsule in a weightless ballet to within 1.5 miles of the space station and then maintain control as Dragon drifts closer.
But a solar storm has the potential to disrupt the shielding effect, and severe space weather can have harmful effects on a wide array of technological systems, including satellite operations, communications, navigation and electric power grids.
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