Download AKTU B-Tech 4th Sem 2016-17 CE402 Geoinformatics Question Paper

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B. TECH.

THEORY EXAMINATION (SEM–IV) 2016-17

GEOINFORMATICS

Time: 3 Hours

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Max. Marks : 100

Note: Be precise in your answer. In case of numerical problem assume data wherever not provided.

SECTION-A

1. Explain the following : (10×2=20)
   1. Stereoscopy
   2. Relief Displacement
   3. Parallax

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   4. Active Remote Sensing
   5. Passive Remote Sensing
   6. Flight Planning
   7. Sun-synchronous Satellites
   8. Geo-synchronous Satellites

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   9. Resolution
   10. Spectral Reflectance Curve

SECTION-B

Attempt any five of the following : (10×5=50)

1. a) Derive an expression for the scale of a vertical photograph. Explain how the ground coordinates and the distances can be obtained from a vertical photograph.

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2. b) Define relief. Derive an expression for the displacement due to ground relief.
3. c) Two consecutive photographs were taken with a camera of focal length 37.5 cm, at a height of 7200 m. The overlap was exactly half and the prints were 22.5 cm X 22.5 cm. The height was same for both the exposures and the aircraft flew on even peel with no drift. The ground was flat at approx. 2500 m above m.s.l. Determine the scale of the photograph and the length of the airbase.
4. d) How will you extract information from an aerial photograph? Explain.
5. e) What is a satellite image? Write short note on characteristics and formats of satellite image.
6. f) What do you understand by 'Image Enhancement'? Explain with reference to the Satellite Remote Sensing.

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7. g) What do you understand by Land Use / Land Cover Classification? Explain.
8. h) What is GIS? What are the applications of GIS? Explain in detail.

SECTION-C

Attempt any two of the following : (15×2=30)

1. Explain the various segments of GPS.
2. Differentiate between kinematic and differential GPS.

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3. How has GPS revolutionized our life? Explain.