罗盘标定技术
compass calibration technique
自定标技术
self-calibrating technique
3G定位技术
positioning technology in 3G
Cell-ID定位技术
Cell-ID location technique
gps定位技术
GPS location technique
GPS positioning technique
GPS localization technology
GPS technology
GPS positioning technology
GPS positioning technics
GPS
Global positioning system
GPS全球定位技术
Global Positioning System technique
GPS卫星定位技术
GPS satellite positioning technology
RFID定位技术
RFID orientation technology