卫星导航系统

satellite navigation system / sat-nav

to guard / to protect / to defend / abbr. for 衛生|卫生, hygiene / health / abbr. for 衛生間|卫生间, toilet / surname Wei / vassal state during the Zhou Dynasty (1066-221 BC), located in present day Henan and Hebei Provinces

satellite / moon / CL:顆|颗[ke1]

star / heavenly body / satellite / small amount

to transmit / to lead / to guide / to conduct / to direct

satellite navigation / sat-nav

navigation

boat / ship / craft / to navigate / to sail / to fly

to connect / to relate to / to tie up / to bind / to be (literary)

system / department / faculty

to tie / to fasten / to button up

to connect / to arrest / to worry

system / CL:個|个[ge4]

to gather / to unite / to unify / whole

BeiDou Navigation Satellite System (BDS) (similar to GPS)

Globalnaya Navigatsionaya Satelinaya Sistema or Global Navigation Satellite System (GLONASS), the Russian equivalent of GPS / abbr. to 格洛納斯|格洛纳斯