A18702 REMOTE SENSING AND GEOGRAPHICAL INFORMATION SYSTEM

                                                                 

       

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Prepared by  
     S.Santhosh (Admin) 
Important questions 
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UNIT -1
1. Reflectance, spectral signatures for water, soil and vegetation
2. Satellites - Types full topic compulsory also expected from this topic
Unit 2 
1. Image interpretation - Visual interpretation elements
2. Image enhancement - image classification
Unit 3
1. DIFF types of map projections
2. Basic components of GIS, Adv,history,deveopmnt of GIS
Unit 4
1. Data Spatial, Non-Spatial Database models Hierarchical network
2. Simple spatial analysis,Buffering 
3. Modelling in GIS- Digital Elevation Modelling
Unit 5 
1.crop Acreage estimation full topic with classification of soil 
2.Application of Remote Sensing and GIS in Precision Agriculture Monitor Crop Health Management Decision Support Systems

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**Very important questions are bolded and may be asked based on this topic

PART-C

1.Compulsory Questions {a case study where the student will have to read and analyse the subject }
mostly asked from unit 2, 5(OR) a situation given and you have to answer on your own

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SYllabuS

UNIT I CONCEPTS OF REMOTE SENSING AND SATELLITES
Definition- Historical background - Components of remote sensing-Energy source, electromagnetic spectrum, radiation principle, platforms and sensors Active and passive remote sensing interference- Atmospheric effects on remote sensing Energy interaction with earth surface feature Data acquisition-Reflectance, spectral signatures for water, soil and vegetation- Satellites - Types - Sun synchronous Geo synchronous remote sensing satellites - LANDSAT SPOT & IRS-Resolution- Spectral, spatial, radiometric and Temporal resolution - Recent satellites with its applications


UNIT II DATA PRODUCTS AND IMAGE ANALYSIS
Data products-based on level of processing- o/p-scale-area/coverage-data availability-data ordering data price - Image interpretation - Visual interpretation elements - interpretation key. Digital image processing - Image enhancement - image classification-Supervised and unsupervised Vegetation Indices


UNIT III CONCEPTS OF GIS
Definition-Map and their influences - Characteristics of Maps - Elements - Map scale, Projection Coordinate systems - Sources of spatial data - History and development of GIS - Definition
Components-Hardware and Software. UNIT IV DATA INPUT AND ANALYSIS
Data Spatial, Non-Spatial Database models Hierarchical network. Relational and Object Oriented Data Models Raster and Vector Methods of Data input- Data Editing - Files and formats - Data structure - Data compression Introduction to analysis - Measurements-Queries Reclassification - Simple spatial analysis - Buffering - Neighboring functions Map overlay Vector and raster - Spatial interpolation - Modelling in GIS- Digital Elevation Modelling - Expert
systems

UNIT V APPLICATION OF RS AND GIS
Crop Acreage estimation - Estimation of Crop Water Requirement-Crop condition - Soil mapping- classification of soil with digital numbers soil erosion mapping- reservoir sedimentation using image processing - Inventory of water resources- water quality assessment - Application of Remote Sensing and GIS in Precision Agriculture Monitor Crop Health Management Decision Support Systems

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