NOAA updates its GPS system

The U.S. National Oceanic and Atmospheric Administration (NOAA) says it is modernizing its Global Positioning System to utilize advances in technology. Scientists at NOAA's National Geodetic Survey -- the official U.S. government source for determining precise latitude, longitude and elevation -- said the effort is important for activities requiring accurate positioning information -- including levee construction projects, the design of evacuation routes in hurricane-prone areas and the forecast of sea level rise in coastal communities.

For more information: NOAA