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Elements Of Remote Sensing

Elements Of Remote Sensing
Orbital radius of GPS satellites is approximately:

15,200 km
18,400 km
36,000 km
26,600 km

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Elements Of Remote Sensing
If θ is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to:

tan²θ
cos²θ
sec²θ
sin²θ

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Elements Of Remote Sensing
For interpolation of satellite data used for monitoring dynamic changes that occurs on the earth surface, the most suitable orbit for the satellite is:

Sun-synchronous orbit
None of these
Circular orbit
Near polar orbit

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Elements Of Remote Sensing
A passive sensor uses:

Its own source of energy
None of these
Sun as the source of energy
Flash light as a source of energy

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Elements Of Remote Sensing
Which one of the following geometric errors of satellite sensors is random?

Panoramic distortion
Scan skew
Earth rotation
Altitude variation

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Elements Of Remote Sensing
The normal altitude of GPS satellite is about

36,100 km
20,200 km
16,200 km
24,400 km

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