It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by Tom Bedlam
Yes, absolutely. DGPS has been around for a long time. Lots of GPS receivers support it.
You can even "do it yourself" if you have lots o' bucks. You need a very pricey reference GPS receiver and a site survey accurate down to less than a centimeter to place the antenna. Then you send out the difference between what the navstar constellation tells you, and where you know the antenna is, to your users. That's how dgps works, more or less.