Remote Sensing For Environmental Science Question Paper

Remote Sensing For Environmental Science

Course:Bachelor Of Environmental Studies

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2009/2010
FIRST SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR
ENVIRONMENTAL SCIENCE

ENS 331:
REMOTE SENSING FOR ENVIRONMENTAL SCIENCE

================================================================
DATE: TUESDAY 22ND DECEMBER 2009
TIME: 8.00 A.M. – 10.00 A.M.

INSTRUCTIONS
Answer Question 1 and any other 3 questions.

1.
a)
Explain image interpretation.

(3 marks)

b)
Outline the criteria used in the selection of sensors for data acquisition in

Remote Sensing.

(6 marks)
c)
Define
map
projections and describe the various types of map projections.

(10 marks)

d)
Write short notes on the following:

i)
Datums

(2 marks)

ii)
Geoid

(2 marks)
iii)
Flattening
factor
(2
marks)

2.
Suppose that you have been contracted to carry out research to evaluate the

ecosystem changes in the Aberdare Forest, state the factors that you would consider

in the fieldwork and explain how you would apply GIS and Remote Sensing

techniques, including use of appropriate satellite image types.

(15 marks)

Page 1 of 2

3.
a)
Describe the various components of the Global Position System. (6 marks)

b)
Distinguish between polar orbiting and geosynchronous altitudes. (6 marks)

c)
Enumerate the advantages of digital data applications.

(3 marks)

4.
a)
What are the major components of Remote Sensing technologies in the
acquisition
and
processing
of
satellite
data.
(7
marks)

b)
Dedifferentiate between a panchromatic and multispectral satellite image.

(4 marks)

c)
Enumerate the likely sources of errors when using a Global Positioning

system.

(4 marks)

5.
a)
i)
Outline the classification process in the quantitative analysis for

computer photo interpretation of a satellite image.
(4 marks)
ii)
Describe
the
main
classification
types in the processing of satellite
images
of
photo
interpretation. (4
marks)

b)
Make a comparison between aircraft and satellite scanners giving examples
for
each
type
of
scanners.
(7
marks)
Page 2 of 2

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