Elements Of Remote Sensing
The various stages occuring in GPS system are described below:
1. Generation of an output to the user
2. Detection of the GPS signals
3. Processing the data in the built-in-computer
4. Decoding the GPS signal.
The correct sequence of the stages is:

1, 2, 3, 4
2, 3, 4, 1
2, 4, 3, 1
3, 1, 2, 4

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Elements Of Remote Sensing
Due to scan geometry of a satellite sensor:

All of these
The off-nadir resolution is degraded
The ground distance swept by the senor, IFOV is proportional to sec2θ, where θ is the angle of scan measured from the nadir
The details towards the edge of the scan get compressed

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