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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?

Atmospheric window
Radiometric error
None of these
Signature

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

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

Mechanical clocks
Electronic clocks
Quartz clocks
Atomic clocks

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Elements Of Remote Sensing
Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:

Cloud evolution
Vegetative cover
Snow cover
All of these

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Elements Of Remote Sensing
Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its

Five ground stations
Four ground stations
Six ground stations
Three ground stations

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Elements Of Remote Sensing
The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called:

Albedo
None of these
Reflectance
Reflectance factor

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