5 things you might not know about GPS

5 things you might not know about GPS

Posted on January 18th, 2007 in Caching and GPS News.

Here are five things you might not have known about GPS, shared on GPSreview.net

1. The official name for GPS when it was developed by the Department of Defense was NAVSTAR.

2. The first GPS satellite was launched in 1978.

3. While it takes 24 satellites to make the satellite constellation, there are more than 24 GPS satellites in orbit doing their job. Some are taken in and out of rotation for software maintenance and new satellites are being launched with new capabilities.

4. The GPS satellites orbit at 12,000 miles above earth traveling at 7,000 miles per hour.

5. Each satellite is only about 17 feet across and circles the earth twice per day.

Check out the full article here

Something I picked up on the www.podcacher.com website who I just did an interview with, check it out!