Space: Japan Builds A Better GPS

Archives

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.

 


Article Archive

Space: Current 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 


X

ad
0
20

Help Keep Us Soaring

We need your help! Our subscription base has slowly been dwindling. We need your help in reversing that trend. We would like to add 20 new subscribers this month.

Each month we count on your subscriptions or contributions. You can support us in the following ways:

  1. Make sure you spread the word about us. Two ways to do that are to like us on Facebook and follow us on Twitter.
  2. Subscribe to our daily newsletter. We’ll send the news to your email box, and you don’t have to come to the site unless you want to read columns or see photos.
  3. You can contribute to the health of StrategyPage. A contribution is not a donation that you can deduct at tax time, but a form of crowdfunding. We store none of your information when you contribute..
Subscribe   Contribute   Close