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Remote Sensing Question Paper

Remote Sensing

Course:Bachelor Of Science (Water & Environmental Engineering)

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
INSTITUTE OF OPEN LEARNING (IOL)
EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN WATER
ENGINEERING

SET 529:
REMOTE SENSING

DATE: Friday, 14th August, 2009

TIME: 8.00 a.m. – 10.00 a.m.
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INSTRUCTIONS:
Attempt question ONE and any other TWO.
Question One
a)
Define remote sensing and state the principle behind this technology (5 marks)
b)
Differentiate the following:
i)
Scattering and Absorption
ii)
Rayleigh scattering and Mie scatteing
iii)
Vidicon camera and Convectional camera
iv)
Active and Passive sensors
(12 marks)
c)
Define spectral reflectance. Sate it’s important in remote sensing (3 marks)
d)
Discuss any five basic characteristics of an image that are vital for interpretation process.

Question Two
a)
How will you distinguish cropland from agricultural land in terms of tone, texture, shape size, pattern, location and association (14 marks)
b)
Define resolving power of a senor (2 marks)
c)
What advantages do sensors carried on board satellites have those to those carried on aircraft? (4 marks)

Question Three
a)
Differentiate between the following pairs of terms
i)
Radiometric resolution and Spectral resolution.
ii)
Diffuse and specular reflection.
iii)
Radiometric correction and Geometric corrections
iv)
Photograph and Image
v)
Geostationary orbit and Sun – synchronous orbit
(10 marks)
b)
Mention different types of sensor resolutions (10 marks)

Question Four
a)
What are the advantages of remote sensing over convectional methods of data acquisition. Mention any THREE of its limitations. (10 marks)
b)
With an aid of a flow chart describe various stages of image processing (10 marks)

Question Five
a)
Define image processing (2 marks)
b)
Write short notes on digital image classification methods
(12 marks)
c)
Discuss application of remote sensing in the following areas:
i)
Geology
ii)
Forest
iii)
Land cover change
(6 marks)

Remote Sensing Question Paper

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