毕业论文外文文献翻译中英文对照国内外GPS发展现状.docx

1 Development of domestic and international GPS 1. Foreign market development situation and trend At present, represented by GPS satellite navigation industry has e the internationally recognized one of the eight wireless industry. As technology advances, the increase in applications, GPS 以 all-weather, high precision, automation, high efficiency, significant features and the unique positioning of navigation, timing and frequency calibration, precision measurement, and many other great features, has been involved in numerous application areas, so GPS e the cellular munication and world after the third IT and economic growth. 1, the main application areas (1) civilian areas In positioning navigation, GPS use mainly in the automotive, ship and aircraft moving objects. For example, ocean-going ships into the port navigation and water diversion, route guidance and approach flight aircraft, vehicle autonomous navigation and positioning, ground vehicle tracking and intelligent traffic management. In addition, the police, fire and emergency medical departments, tracking goals and personal travel and other outdoor adventure guide, GPS has a unique advantage. In daily life, GPS can also be used when the risk of personal attack alarms, special patient care and rescue of children, life, seek help when they encounter such difficulties. Simply pressing the use of GPS location services with mobile phone button, police monitoring center and emergency center ina few seconds warning can be informed of the location of people and to provide timely assistance. Current international representative pany, the main push ofa Tempo pany, Leica, panies and panies, Watt, the main push navigation equipment and GPS OEM board with pany, Magellan, pany, Rockwell Corporation and SiRF Technology Corporation. (2) in the military field In the military field, GPS also has had for warships, aircraft, combat vehicles, ground operations personnel to provide all-weather, continuous real-time, high-precisi