I'MGY-0021

No. of Printed Pages : 3

POST GRADUATE CERTIFICATE IN GEOINFORMATICS (PGCGI) Term-End Examination June, 2015

006-76

MGY-002 : REMOTE SENSING AND IMAGE INTERPRETATION

Maximum Marks : 50

Time : 2 hours Note :

All questions are compulsory. The marks for each question are indicated against it.

1. Answer all parts : (a) Fill in the blank spaces• with appropriate 4x1=4 word(s) : (i)

The word SAR' stands for

(ii) The word `IFOV' stands for



(iii) The word `ISODATA' stands for (iv) NDVI stands for

MGY-002

1

P.T.O.

(b) State if the following statements are True (T) or False (F) : 3x1.3 (i) Landsat is a series of satellites in sun-synchronous polar orbit first launched in 1974. (True/False) (ii) Mie scattering happens when the particles in the atmosphere are of the same size as the incident wavelength. (True/False) (iii) Image histograms are the frequency distributions of pixel values in an image. (True/False) (c) Match the items given in Column A with those in Column B : 3x1=3 Column A Column B (i)

2.

EVI

(1) Map accuracy

(ii) Thresholding

(2) Band ratio

(iii) Kappa

(3) Enhancement

Write short notes on any following :

four

of the 4x5=20

(a)

Systematic radiometric errors

(b)

Spatial resolution

(c)

Spectral signature of soil

(d)

Colour composite

(e)

Ground truth data and purpose of ground truth data collection

(f)

Sun-synchronous orbit

MGY-002

2

3. (a) Discuss in detail the Indian Remote 10 Sensing satellites for land applications. OR (b) Describe in detail the electromagnetic 10 radiation laws. 4. (a) Explain image interpretation with particular emphasis on visual image 10 interpretation. OR (b) Discuss in detail the image enhancement with appropriate examples and 10 illustrations, wherever required.



MGY-002

1,000

POST GRADUATE CERTIFICATE IN GEOINFORMATICS (PGCGI ...

(i) EVI. (1) Map accuracy. (ii) Thresholding (2) Band ratio. (iii) Kappa. (3) Enhancement. 2. Write short notes on any four of the following : 4x5=20. (a) Systematic radiometric errors. (b) Spatial resolution. (c) Spectral signature of soil. (d) Colour composite. (e) Ground truth data and purpose of ground truth data collection.

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