CE-504-B Remote Sensing and GIS - Nov 2023 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aExplain advantages and limitations of remote sensing?
   How to answer

   • Define remote sensing
   • List advantages e.g. synoptic coverage, repetitive, inaccessible areas
   • List limitations e.g. cost, resolution, weather dependence, expertise
   • Conclude with suitability
2. 7 Marks
   bExplain electromagnetic spectrum with a neat sketch?
   How to answer

   • Define electromagnetic spectrum
   • Describe regions from UV to microwave with wavelength ranges
   • Explain interaction with atmosphere/remote sensing use
   • Provide neat labelled sketch of spectrum
3. 7 Marks
   aWhat is resolution of Sensor? Describe all sensor resolution.
   How to answer

   • Define sensor resolution
   • Describe spatial resolution
   • Describe spectral, radiometric and temporal resolution
   • Give examples for each
4. 7 Marks
   bDiscuss briefly about airborne and space borne platforms.
   How to answer

   • Define platforms in remote sensing
   • Describe airborne platforms: types, merits, limitations
   • Describe spaceborne platforms: types, orbits, merits
   • Compare airborne vs spaceborne
5. 7 Marks
   aExplain how spatial data and attribute data integrated to make a GIS?
   How to answer

   • Define spatial data and attribute data in GIS
   • Explain linkage via geocoding/ID/feature
   • Describe integration models: vector/raster with DBMS
   • Give example of GIS query using both
6. 7 Marks
   bDescribe different types of coordinate systems.
   How to answer

   • Define coordinate system need in GIS
   • Describe geographic coordinate system (lat/long/datum)
   • Describe projected/planar and UTM systems
   • Compare applications
7. 14 Marks
   Explain and compare vector and raster data structure.
   How to answer

   • Define vector data structure: point, line, polygon
   • Define raster data structure: grid/cell/pixel
   • Compare on structure, accuracy, storage, analysis
   • Give suitability examples
8. 7 Marks
   aExplain the applications of remote sensing in water resources.
   How to answer

   • List water resources problems needing RS
   • Explain applications: mapping, snowmelt, groundwater, flood, drought
   • Mention sensors/satellites used
   • Conclude benefits
9. 7 Marks
   bExplain the following.

   1. i)Synoptivity and Repetivity
   2. ii)Remote sensing applications in traffic management
   How to answer

   • Define synoptivity and repetitivity with satellite examples
   • Explain traffic management uses: congestion, routing, planning
   • Mention sensors/platforms for traffic studies
   • Summarize advantages
10. 7 Marks
    aExplain the elements of visual interpretation techniques.
    How to answer

    • List 8 elements: tone, size, shape, texture, pattern, shadow, site, association
    • Explain each with example
    • Describe visual interpretation process
    • Mention limitations
11. 7 Marks
    bBriefly describe the Indian satellite program.
    How to answer

    • Outline history of ISRO/Indian program
    • Describe IRS, INSAT, Cartosat, Resourcesat series
    • Mention applications
    • Current status
12. 14 Marks
    Explain in detail about Earth resource and Weather satellite.
    How to answer

    • Define Earth resource satellites: objectives, sensors
    • Define weather/meteorological satellites: geostationary/polar
    • Give Indian examples: Resourcesat, INSAT, Kalpana
    • Compare functions and orbits
13. 7 Marks
    aDifferentiate between digital image analysis and visual image analysis.
    How to answer

    • Define digital image analysis: computer-based classification
    • Define visual image analysis: human interpretation
    • Differentiate on basis, speed, accuracy, cost
    • Give use cases
14. 7 Marks
    bExplain the following:

    1. i)Spectral reflectance curves
    2. ii)Stereoscope
    How to answer

    • Explain spectral reflectance curves for vegetation, soil, water
    • Define stereoscope: principle and types
    • Explain use in 3D viewing/height measurement
    • Add illustrative diagrams