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ELEMENTS OF REMOTE SENSING

Elements Of Remote Sensing
In the given figure the phase of

Crest A is π/2
B crossing is π
All of these
Trough C is 3π/2

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Elements Of Remote Sensing
Which one of the following helps to identify the objects on the earth surface?

Atmospheric window
Radiometric error
Signature
None of these

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Elements Of Remote Sensing
The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called:

Neutral remote sensing
None of these
Active remote sensing
Passive remote sensing

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Elements Of Remote Sensing
The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:

0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm
All of these
4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm
2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm

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

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

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