Page 1 of 2
Name
Reg No

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
07 THRISSUR CLUSTER
SECOND SEMESTER M.TECH. DEGREE EXAMINATION APR 2018
CIVIL ENGINEERING DEPARTMENT
WATER RESOURCES AND HYDRO INFORMATICS
07CE6406 REMOTESENSING
Time 3 hours Max.Marks: 60
Answer all six questions. Part of each question is compulsory.
Answer either part or part of each question
Q.no. Module 1 Marks
1a Write a short note on orthophotos. 4
Answer b or c
b What is photographic scale? Two road intersections shown on a photograph
can be located on a 1:25000 scale topographic map. The measured distance
between the intersections is 47.2 mm on the map and 94.3 mm on the
photograph. What is the scale of the photograph? At that scale, what is the
length of a fence line that measures 42.9mm on the photograph?
5
c What is relief displacement? Derive an expression for the object height
determination from relief displacement measurement.
5
Q.no. Module 2 Marks
2a Explain various components of remote sensing. 4
Answer b or c
b Explain about various segments in GPS. 5
c What is the significance atmospheric windows in remote sensing. 5
Q.no. Module 3 Marks
3a
Write short note on various elements of visual image interpretation.
4
Answer b or c
b Differentiate between spatial resolution and spectral resolution. 5
c What is the significance ground truthing in remote sensing 5
Page 2 of 2
Q.no. Module 4 Marks
4a Discuss about the geometric corrections applied in image restoration. 4
Answer b or c
b Explain the various techniques of contrast manipulation in image
enhancement.
5
c What is meant by spatial filtering? Explain with examples 5
Q.no. Module 5 Marks
5a Write short note on classification accuracy assessment. 5
Answer b or c
b Explain about supervised classification of the digital image. 7
c Write short note on classification of mixed pixels. 7
Q.no. Module 6 Marks
6a Explain the role of remote sensing in land use land cover mapping 5
Answer b or c
b Discuss about the relevance of remote sensing in the modern world. 7
c Write short note on application of remote sensing in the field of water pollution
detection.
7