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Examination Question of REMOTE SENSING AND GIS - BPUT - 2018

  • Remote Sensing and GIS - RSG
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Registration No : Total Number of Pages : 02 B.Tech. PEN6J004 6th Semester Regular Examination 2017-18 REMOTE SENSING & GIS BRANCH : ENV Time : 3 Hours Max Marks : 100 Q.CODE : C441 Answer Part-A which is compulsory and any four from Part-B. The figures in the right hand margin indicate marks. Q1 a) b) c) d) e) f) g) h) i) j) Q2 a) b) c) d) e) f) g) h) i) j) Q3 a) b) Part – A (Answer all the questions) Answer the following questions : A sensor is a device used for_____________________ Coherence of 2-electromagnetic waves takes place if their phase difference is __________________. A perfectly black body ______________________________. A passive sensor uses _____________ as the source of energy. The instruments which provide electromagnetic radiation of specified wavelength or,band of wavelengths to illuminate the earth surface are called ________________. ___________ data for a GIS are mainly tabular data collected by sampling. The arrangements of terrain features which provide attributes: the shape, size & texture of objects is called ____________________. Leaf reflectance depends primarily on _______________. The normal altitude of GPS satellite is _________________ km. Commonly boundary between 2-areas of locality as adjacency is called ___________________. Answer the following questions : Short answer type : Define Remote Sensing? What is sun-synchronous satellite? What is electromagnetic spectrum? Name two errors in digitizing. Write two types of active sensors and two types of passive sensors. What is thermal imagery? Explain the principle of a line camera. What is GIS data mining? List out any four advantages of GIS? List the three color spaces used in Remote Sensing? Part – B (Answer any four questions) List and describe the characteristics of Remote Sensing Images with the help of suitable block diagrams. Explain Electromagnetic spectrum. (2 x 10) (2 x 10) (10) (5)

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Q4 a) b) Explain the types of resolution in remote sensing with examples. Write advantages of GIS over DBMS. (10) (5) Q5 a) b) Explain in detail about image enhancement and image transformation. Differentiate between active and passive remote sensing system. (10) (5) Q6 a) (10) b) What is image classification? What are the elements of image interpretation, and how these elements help to interpret remote sensing imagery? What is difference between raster and vector data? Q7 a) b) Explain the role of Remote Sending and GIS in watershed management. Write briefly about preparation of thematic map from remote sensing data. (10) (5) Q8 a) b) Explain the GIS architecture with the help of components and its workflow. What do you mean by digital terrain modeling? Explain different approaches to digital terrain data modeling. (10) (5) Q9 a) b) Explain the application of aerial photo interpretation in various fields. Write short notes on the following : (i) Spatial planning approach (ii) Global Positioning system [GPS] (10) (5) (5)

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