Dear GPS Users:

For more than two decades America's investment in the Global Positioning System (GPS) positioning, navigation and timing (PNT) capability has resulted in tremendous benefits for users around the world.  At NASA, GPS is a vital resource that provides key PNT capabilities onboard the Space Shuttle, the International Space Station, and on numerous science satellites. GPS is a national asset that will be used to further America's long-term space exploration objectives under the Vision for Space Exploration.  GPS precision time signals may become the electronic foundation for the communication and navigation systems of human and robotic explorers and enable an "interplanetary Internet" for the global community to use. GPS signals can be used at no cost by anyone anywhere on Earth, supporting entire industries and sectors such as aviation and maritime, to disaster relief, surveying, banking, and telecommunications. 

NASA is proud to host the GPS Exchange Web site at http://gpshome.ssc.nasa.gov.  This Web site is an international information service organized by country via a clickable map display and depicts public and private sector GPS uses and their associated benefits.  The idea is to illuminate the many uses of this advanced satellite-based technology and to generate new concepts for the entire world to pursue.

I invite all GPS users to add their own applications to this Web site, so that we can all benefit from this living library of GPS applications. You can do this by accessing the Web site above and clicking "Submit Applications" on the left side of your computer screen.  

I hope you will take the time to share your ideas with others around the world by contributing to this site.

Sincerely,

Michael D. Griffin