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:

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

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Elements Of Remote Sensing
Earth observations from a satellite platform provide:

All of these
Constant solar zenith angles and similar illumination conditions
Synoptic view of a large area
Repetitive observations of the same area with intervals of a few minutes to a few weeks

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Elements Of Remote Sensing
Which one of the following statement is incorrect regarding the electromagnetic radiation?

The oscillation of charged particles sets up changing electric fields
The changing electric fields induce the changing magnetic fields in the surrounding medium
None of these
These are produced by the motion of electric charge

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