Satellite navigation device - Wikipedia
Global Positioning System - Wikipedia
How was GPS invented? - Quora
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After GPS was invented, President Ronald Reagan wanted it to be available to all people for their own use. When a Korean Airliner was shot down for invading. - ppt download
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A 87-Year-Old Black Woman Helped Develop GPS Technology
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Global Positioning System (GPS) – fourforsociety
A brief History of GPS In-Car Navigation - NDrive
First Map-Based Car Navigation System Debuted 14 Years Before GPS - IEEE Spectrum
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Global Positioning System - Wikipedia
A brief History of GPS In-Car Navigation - NDrive
The Invention and Evolution of GPS | iGPS
Who invented the GPS? People behind the Global Positioning System.
BBC World Service - Newshour, How was GPS invented?
Who Invented GPS Technology?
Our Invention - The GPS Keychain
GPS manufacturers tout software features
GPS (Global Positioning System) – Invention Fanatic
When was GPS invented
GPS equipment, 1989 – Modern mapping and surveying – Te Ara Encyclopedia of New Zealand
