Unlike the American GPS, Russian GLONASS, and European Galileo systems, which use medium Earth orbit satellites, BeiDou-1 uses satellites in geostationary orbit. This means that the system does not require a large constellation of satellites, but it also limits the coverage to areas on Earth where the satellites are visible. The area that can be serviced is from longitude 70°E to 140°E and from latitude 5°N to 55°N. A frequency of the system is 2491.75 MHz. COUNT 5
QSN1 What type of satellites does the American GPS system use? ANS1 medium Earth orbit satellites QSN2 What type of satellites does the BeiDou-1 system use? ANS2 satellites in geostationary orbit QSN3 What is the purpose of the BeiDou-1 system using stallites in geostationary orbit? ANS3 the system does not require a large constellation of satellites QSN4 What service area is covered by the BeiDou-1 system? ANS4 from longitude 70°E to 140°E and from latitude 5°N to 55°N QSN5 What is the frequency of the BeiDou-1 system? ANS5 2491.75 MHz