JNTU
JNTU B.Tech III REMOTE SENSING AND GIS Previous Question Paper (July - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
Write down fundamentals of stereoscopy.
Answer
Stereoscopy is the technique of viewing two overlapping aerial photographs of the same area, taken from different camera positions, through a stereoscope to perceive a three-dimensional model of the terrain.
What is parallax in photogrammetry?
Answer
Parallax is the apparent displacement or change in the position of an object with respect to a reference system, caused by a change in the observer's position. In photogrammetry, it refers to the difference in the position of an image point on two successive overlapping photographs due to the movement of the aircraft.
Define active remote sensing.
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What is spatial resolution?
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Write the purpose of datum.
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What do you mean by projection?
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Write topology rules.
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Define raster.
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What is metadata?
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What is remote sensing data?
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Part B
Explain principles of photogrammetry.
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List and explain various types of aerial photograph along with the neat sketches.
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What is relief displacement and how it is useful in photogrammetry and how it is measured.
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Elaborate the following:
- Spectral resolution
- Radiometric resolution
- Temporal resolution
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Draw the electromagnetic spectrum along with band widths and its utility.
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Compare natural colour composite and false colour composite.
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Explain the following:
- Datum
- Map projections
- Coordinate systems
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Write down the components of GIS.
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Differentiate spatial data and attribute data.
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Write the importance of down topology rules.
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Compare raster data and vector data.
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Explain object based vector data model.
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Explain classes and their relationship.
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Write down elements of the raster data model.
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Explain types of raster data and raster data structures.
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Elaborate integration of raster and vector data.
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Explain how field data is integrated with remote sensing data.
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