How GPS Works
We are heavily reliant on GPS. Not just in our cars, but also planes, ships and many apps use it.
It helps to know how it works.
West Point grad; Special Ops Vet; NY Times bestseller of over 80 books; for free books and over 200 free downloadable slideshows go to www.bobmayer.com
West Point grad; Special Ops Vet; NY Times bestseller of over 80 books; for free books and over 200 free downloadable slideshows go to www.bobmayer.com
