Civil Engineering - Elements of Remote Sensing

Exercise :: Elements of Remote Sensing - Section 1

16. 

If 0 is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to :

A. sin2θ
B. cos2θ
C. sec2θ
D. tan2θ

Answer: Option C

Explanation:

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17. 

Which one of the following statements is correct regarding the GPS satellites ?

A. The nominal altitude is about 20, 200 km
B. The inclination of axis satellite is 55°
C. The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)
D. All of these

Answer: Option D

Explanation:

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18. 

Pick up the correct statement from the following:

A. Indian space effort started in 1962 with the establishment of a rocket.
B. Development of space (DOS) was established by the Government of India in 1972
C. Indian Space Research Organisation (ISRO) is responsible for the space technology and its application to various activities.
D. All of these

Answer: Option D

Explanation:

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19. 

Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).

A. h > λ/Δ cos θ
B. h = λ/8 cos θ
C. h > λ/8 cos θ
D. h < λ/8 cos θ

Answer: Option C

Explanation:

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20. 

Pick up the correct statement from the following :

A. The distance between two successive crests or troughs of a wave, is called, the wave length
B. The wave length is measured in metres and a fraction of a metre
C. The wave length is generally denoted by λ
D. The length of the crest from the mid point, is called amplitude
E. All of these

Answer: Option E

Explanation:

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