Q. With reference to NavIC and GPS, consider the following statements;
1.GPS only has geosynchronous satellites, but the NaviC has both geostationary and geosynchronous satellites.
2.GPS is accurate up to 5-10 meters on land against 20-30 meters for NaviC.
Which of the statements given above is/are correct?
Answer: A
Notes:
Statement 1 is correct: The GPS needs nearly 24 operational satellites and has 31 satellites in orbit. All 55 satellites are geosynchronous satellites which means that they do not remain stationary in space regarding the revolving earth.
NavIC has 3 geostationary satellites and 4 geosynchronous satellites which are placed in much higher orbits due to which the signal is less prone to obstructions.
The GPS uses a single frequency band while the NavIC satellites use dual frequency bands (L5-band and S-band).
Statement 2 is incorrect: NavIC is said to be accurate up to 5-10 meters on land against 20-30 meters for GPS.
Source: Mint
