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Preliminary   > Science and Technology   >   Space technology   >   Space organisations & missions

Why in news?

  • China has announced plans to increase the global reach of its home-grown Beidou satellite navigation system, which is promoted as an alternative to America’s Global Positioning System (GPS).

About Beidou Satellite System:

  • The Beidou satellite (BDS) navigation system is a constellation of 30 satellites in orbit, independently constructed and operated by China and currently in use in more than half of the world’s countries.

Other Navigation Satellite Systems:


Regional Navigation Satellite System

Global Navigation Satellite Systems


1.NavIC - India  


2.Quasi-Zenith Satellite System (or Michibiki) - Japan


1.Global Positioning System (GPS) – U.S.A

2.Galileo European Union

3.GLONASS - Russia

4.Beidou – China




Consider the following pairs:

1. BeiDou        : Japan

2. Galileo         : Russia

3. GLONASS   : European Union

Which of the pairs given above is/are correct?

(a) 1 and 2 only

(b) 3 only

(c) 2 and 3 only

(d) None of the above