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Elements Of Remote Sensing

Elements Of Remote Sensing
In GPS, receivers are used are;

Atomic clocks
Quartz clocks
Mechanical clocks
Electronic clocks

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Elements Of Remote Sensing
Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct?

C = v + λ
C = 1/λv
C = λ/v
C = vλ

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Elements Of Remote Sensing
The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:

None of these
Near-IR (0.7 - 1.3 μm) region
Visible (0.4 - 0.7 μm) region
Short wave-IR (1.3 - 2.7 μm) region

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

Parabolic antenna
Microstrip antenna
Horn antenna
Slotted antenna

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Elements Of Remote Sensing
If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height

h = (B/H) dp
h = dp/(B/H)
h = dp/(H/B)
h = (H/B) dp

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Elements Of Remote Sensing
Who coined the term, ‘Remote sensing’.

Gaspard Felix Tournachon, a French scientist
Evelyn L. Pruitt, a geographer
None of these
Wilbur Wright, an Italian scientist

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