The BeiDou Navigation Satellite System (BDS, simplified Chinese: 北斗卫星导航系统; traditional Chinese: 北斗衛星導航系統; pinyin: Běidǒu wèixīng dǎoháng xìtǒng) is a Chinese satellite navigation system. It consists of two separate satellite constellations – a limited test system that has been operating since 2000, and a full-scale global navigation system that is currently under construction. COUNT 5
QSN1 What is the BeiDou Navigation Satellite System? ANS1 a Chinese satellite navigation system QSN2 How many satellite constellations does the BeiDou Navigation Satellite System have? ANS2 two separate satellite constellations QSN3 What are the two satellite constellations? ANS3 a limited test system that has been operating since 2000, and a full-scale global navigation system QSN4 How long has the limited test system been operating? ANS4 since 2000 QSN5 How is the BeiDou Navigation Satellite System written in traditional Chinese? ANS5 北斗衛星導航系統