ELEMENTS OF REMOTE SENSING QUIZ

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

Five ground stations

Six ground stations

Three ground stations

Four ground stations

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Sensor IFOV is proportional to:

sec²

cos²

sin²

tan²

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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 = vλ

C = λ/v

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Due to scan geometry of a satellite sensor:

The ground distance swept by the senor, IFOV is proportional to sec2θ, where θ is the angle of scan measured from the nadir

All of these

The details towards the edge of the scan get compressed

The off-nadir resolution is degraded

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Remote sensing techniques make use of the properties of ___________ emitted, reflected or diffracted by the sensed objects:

Sound waves

Wind waves

Electromagnetic waves

Electric waves

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In case of reflection and refraction of electromagnetic radiation,

Angle of refraction = sum of the angles of incidence and refraction

Angle of incidence = angle of refraction

All listed here

Angle of incidence = angle of reflection

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The altitudinal distance of a geostationary satellite from the earth is about:

26,000 km

44,000 km

30,000 km

36,000 km

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The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :

8

12

24

16

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Leaf reflectance depends primarily on:

Internal cell structure

Equivalent water content

All of these

The pigments

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The code based GPS receivers are generally used for:

Trans movement

Vehicle tracking

Land navigation

All of these

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