Elements Of Remote Sensing
Which one of the following statements is correct regarding the GPS satellites?

All of these
The nominal altitude is about 20,200 km
The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)
The inclination of axis satellite is 55°

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

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

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

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

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