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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?

None of these
Radiometric error
Atmospheric window
Signature

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Elements Of Remote Sensing
Electromagnetic spectrum contains:

Ultraviolet rays (wave length < 10⁻⁶ m)
Gamma rays (wave length < 10⁻¹⁰ m)
Infrared rays (wave length < 10⁻⁴ m)
All of these

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Elements Of Remote Sensing
For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is:

500 km
230 km
250 km
130 km

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Elements Of Remote Sensing
The most widely used antenna in GPS is

Parabolic antenna
Slotted antenna
Horn antenna
Microstrip antenna

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Elements Of Remote Sensing
Which one of the following quantities forms the basis of radiometry?

Radiant flux (φ)
Radiant intensity (I)
Radiant energy (Q)
All of these

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Elements Of Remote Sensing
The infrared portion of EMR lies between

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

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