GPS Selective Availability Lifted 10 Years Ago

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!

Find out more. Read GPS Selective Availability Lifted 10 Years Ago at pocketgpsworld.com

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About Chris Mason

Chris graduated from Portsmouth Polytechnic in 1983. His interest in software began with a Sinclair ZX80 and hours spent typing in programs from magazines. Chris now leads the development of Prosig’s DATS software package, writes for the Noise and Vibration Measurement Blog and works on social media projects. He is a technical director of Prosig Ltd.