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Elements Of Remote Sensing

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

Radiometric error
None of these
Signature
Atmospheric window

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Elements Of Remote Sensing
The infrared portion of EMR lies between

0.5 mm to 1 μm
0.7 - 1.3 μm
0.4 - 0.7 μm
0.7 to 14 μm

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Elements Of Remote Sensing
Electromagnetic radiation:

All of these
Once generated, remains self-propagating
Is capable to travel across space
Produces a time varying magnetic field and vice versa

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Elements Of Remote Sensing
Consider the following statements regarding the satellite imaging:
1. The satellite orbit is fixed in the inertial space
2. During successive across-track imaging, the earth rotates beneath the sensor
3. The satellite images a skewed area
Which one of the following statements is/are correct?

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

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Elements Of Remote Sensing
The changes in the reflectivity/emissivity with time, is called:

None of these
Spectral variation
Spatial variation
Temporal variation

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Elements Of Remote Sensing
The altitudinal distance of a geostationary satellite from the earth is about:

44,000 km
36,000 km
30,000 km
26,000 km

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