On 2nd May we reached the 10 year anniversary of the removal of SA from the NAVSTAR GPS system. For those of you not familiar with SA or Selective Availability it was the switching off of this option that made possible the explosive growth we have seen in automotive and personal GPS devices. For those that are interested, the image is of an early Rockwell military GPS unit. As I have seen commented elsewhere, this was described as “handheld”, but you wouldn’t want to hold one for too long!
Latest posts by Chris Mason (see all)
- Prosig Student Project Prize for University of Portsmouth – 2018 - August 8, 2018
- Sound, Vibration & Acoustics Digest #11 - March 9, 2017
- Pick of Twitter #1 – Acoustics – October 2016 - October 27, 2016