Space Article Index : Current 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
 Latest
 News 		  Most
 Read 		  Most
 Commented		  Hot
 Topics

Japan Builds A Better GPS

September 22, 2010: Japan recently launched the first of three QZSS navigation satellites. These are to complement the current American GPS satellites. QZSS is meant to overcome the interference (to GPS signals) from the many mountains and tall buildings in Japan. When all three of the four ton QZSS satellites are operational, Japanese GPS users will get a signal 99.8 percent of the time, rather than the current 90 percent. While QZSS broadcasts a similar signal, special receivers will be required to use the QZSS signals. Next Article → INFANTRY: Night Moves