In a message dated 07/03/2007 10:55:09 GMT Standard Time, [EMAIL PROTECTED] writes:
If you ever wondered why your GPS wasn't quite accurate read the first para below... Lenny Shaffer <[EMAIL PROTECTED]> wrote: Bill Clinton had the "SA" (selective availability) turned off. It was an intentional degradation of the accuracy of civilian GPS due to the military's fears than foreign powers could use our GPS signals to guide their bombers and rocket to US targets... It has only been in the last 5 years or so that the US authorities released the last few bits of positional data for civilian use. I understand they found witholding the info was pointless when it was pointed out (by 'experts' in the UK?) that if you issued a satellite-equivalent signal from a fixed ground station then you could use this known position to calculate the GPS position without having the whole satellite signal. DaveD [Non-text portions of this message have been removed]
