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GPS PROS Group Forum is for any member of LSU that is a professional land surveyor using primarily GPS in the field. Geodetic / Global Positioning Systems (GPS) Get help and offer support with survey grade GPS!

Great resource for understanding GPS History

http://en.wikipedia.org/wiki/Global_Positioning_SystemThe Satellite Navigational Constellation world is growing fast!US Global Positioning System (GPS) at 32 satellitesRussian GLONASS at 19 satellites http://www.glonass-ianc.rsa.ru/pls/htmldb/f?p=202:20:14637162736231801312::NOEuropean Galileo Constellation at full operation will have 30 satellites http://www.esa.int/esaNA/ESAAZZ6708D_galileo_0.htmlChinese BEIDOU/COMPASS will have 10 satellites by 2010 http://www.insidegnss.com/node/924#Baseband_Technologies_Inc_Japanese Quasi-Zenith Satellite System http://sciencelinks.jp/j-east/article/200413/000020041304A0368467.phpIndian Regional Navigation Satellite System (IRNSS) as well as the augmentation systems. http://www.gisdevelopment.net/news/viewn.asp?id=GIS:N_wabucgyfeo

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