From SpaceRef.com
"COLUMBUS, Ohio -- The same Ohio State University researcher who is helping rovers navigate on Mars is leading a new effort to help humans navigate on the moon.
When NASA returns to the moon -- the space agency has set a target date of 2020 to do so -- astronauts won't be able to use a global positioning system (GPS) to find their way around, explained Ron Li, the Lowber B. Strange Designated Professor of civil and environmental engineering and geodetic science.
So NASA has awarded Li $1.2 million over the next three years to develop a navigation system that will feel a lot like GPS to the astronauts that use it, but will rely on signals from a set of sensors including lunar beacons, stereo cameras, and orbital imaging sensors. "
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