GNSS介绍双语PPT.ppt
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1、全球导航定位系统全球导航定位系统GNSSGlobal Navigation Satellite System 123contentsThe brief introduction of GNSS The brief introduction of GNSS The constellations of GNSS The constellations of GNSS The application of GNSS The application of GNSS1.The brief introduction of GNSS It is constellation of satellites desi
2、gned to provide positioning and timing information for users on earth or in space.It is refers to all the global and regional satellite navigation system and the enhance system.The component of GNSS The component of GNSS GLONASSGNSS1.The brief introduction of GNSS 2.The Constellations of GNSS 2.1 GP
3、S Basic Information24 satellites6 orbital planes on almost circular orbitsan altitude of about 20,200km above the surface of the earth inclined by 55 with respect to the equator orbital periods of approximately 11 hours 58minutesdesigned and realized by the U.S.Department of Defensethe military appl
4、ication,commercial and public sector users 2.1 GPSGPS has made a considerable impact on almost all positioning,navigation,timing and monitoring applications.It provides particularly coded satellite signals that can be processed in a GPS receiver,allowing the receiver to estimate position,velocity an
5、d time.Eg:placing GPS receivers on ocean buoys to measure wave height and direction,monitoring the earths crustal deformations,and sensing the atmosphere using occultation techniques,such as those accomplished using CHAMP satellite.2.The Constellations of GNSS 2.2 GLONASS Basic Information24 satelli
6、tes(12 October,1982 1995)In 3 orbit separated by 64.8 in the equatorial planeAn altitude of about 19,130 km above the ground surfaceAn orbital period of 11:15:14 Operated by the Ministry of Defense of the Russian Federation.2.The Constellations of GNSS 2.2 GLONASS FutureThe future seemed uncertain d
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