Civil Engineering - Elements of Remote Sensing - Discussion

8. 

Due to pertubation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its

[A]. six ground stations
[B]. five ground stations
[C]. four ground stations
[D]. three ground stations

Answer: Option B

Explanation:

No answer description available for this question.

Ashokkumar said: (Jan 15, 2016)  
Five ground stations is wrong 6 ground stations is correct because commonly 12 satellites in a each orbit for 12 satellites 6 ground stations required.

Sandeep said: (Feb 14, 2018)  
There is no doubt in having "ground stations" to correct or bring back a satellite to its desired orbit. But the number of ground stations. 6, 5, 4, 3.

I feel It depends on the technology.

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