general positioning system
31Local Area Augmentation System — The Local Area Augmentation System (LAAS) is an all weather aircraft landing system based on real time differential correction of the GPS signal. Local reference receivers send data to a central location at the airport. This data is used to… …
32Next Generation Air Transportation System — The Next Generation Air Transportation System (NextGen) is the name given to a new National Airspace System due for implementation across the United States in stages between 2012 and 2025.[1] The Next Generation Air Transportation System… …
33Automatic Packet Reporting System — (APRS) is an amateur radio based system for real time tactical digital communications of information of immediate value in the local area. In addition, all such data is ingested into the APRS Internet system (APRS IS) and distributed globally for …
34Director General of the European Space Agency — The Director General of the European Space Agency is the highest ranked official of the European Space Agency (ESA), a space agency formed by the collaboration of prominent European nations. Contents 1 ELDO Secretaries General 2 ESRO Directors… …
35Automatic Position Reporting System — Logo du mode APRS L Automatic Position Reporting System (système de suivi automatique des positions) (APRS) est un mode de transmission numérique utilisé par les radioamateurs. Utilisant le même protocole que le packet radio, l AX.25 la version… …
36Automatic Packet Reporting System — Logo du mode APRS APRS pour Automatic Packet Reporting System (système transmission automatique par paquets) est un système de radiocommunication numérique utilisé par les radioamateurs, qui permet le partage entre stations d informations d… …
37Fuzzy locating system — Fuzzy locating is a rough but reliable method based on appropriate measuring technology for estimating a location of an object. The concept of precise or ‘’crisp locating’’ is replaced with respect to the operational requirements and the economic …
38Compass navigation system — For navigation with a magnetic compass, see compass. Comparison of GPS, GLONASS, Galileo and Compass (medium earth orbit) satellite navigation system orbits with the International Space Station, Hubble Space Telescope and Iridium constellat …
39control system — Means by which a set of variable quantities is held constant or caused to vary in a prescribed way. Control systems are intimately related to the concept of automation but have an ancient history. Roman engineers maintained water levels in… …
40Diagonal system of control — Diagram of a left diagonal system of control The diagonal system of control is the system of positioning used by match officials (referees and assistant referees) in association football (soccer). This allows the referee to officiate in a fluid… …
