GPS receivers Global Positioning System 24 Design and construction 15 Global positioning system 13 Radio 7 Artificial satellites in navigation 5 Receivers and reception 5 Data processing 4 Galileo satellite navigation system 3 Amateurs, manuals 2 Amateurs, manuals 2 Computer hackers 2 Design 2 MATLAB 2 Programmable logic devices 2 Radio wave propagation 2 Remote submersibles 2 Ships 2 Transmitters and transmission 2 Vehicles, Remotely piloted 2 Wireless sensor networks 2 1 Earthquakes 1 Global system for mobile communications 1 Identification 1 Information display systems 1 Liquid crystal displays 1 Radio frequency 1 Security systems 1