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Exam

GATE Preparation 2023

Geomatics Engineering 
Enroll with AGSRT and Get Trained by GIS Experienced Professionals

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Students Taking Exam
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Class Start Date - November 15th

Last Date of Admission - November 02nd

TABLE OF CONTENTS

PART A: Common


Remote Sensing - Basic concept, Electromagnetic spectrum, Spectral signature, Resolutions-Spectral. Spatial, Temporal and Radiometric, Platforms and Sensors, Remote Sensing Data Products - PAN, Multispectral, Microwave, Thermal, Hyperspectral, Visual and digital interpretation methods.


GNSS - Principle used, Components of GNSS, Data collection methods, DGPS, Errors in observations and corrections.


GIS - Introduction, Data Sources, Data Models and Data Structures, Algorithms, DBMS, Creation of Databases (spatial and non-spatial), Spatial analysis - Interpolation, Buffer, Overlay, Terrain Modelling and Network analysis.


PART B: Section I


Maps - Importance of maps to engineering projects, Types of maps, Scales and uses, Plotting accuracy, Map sheet numbering, Coordinate systems- Cartesian and geographical, map projections, map datum – MSL, Geoid, spheroid, WGS-84.


Land Surveying - Various Levels, Levelling methods, Compass, Theodolite and Total Station and their uses, Tachometer, Trigonometric levelling, Traversing, Triangulation and Trilateration.
Aerial Photogrammetry - Types of photographs, flying height and scale, Relief (height) displacement, Stereoscopy, 3-D Model, Height determination using Parallax Bar, Digital Elevation Model (DEM), Slope.


PART B: Section II


Data Quantization and Processing - Sampling and quantization theory, Principle of Linear System, Convolution, Continuous and Discrete Fourier Transform.


Digital Image Processing - Digital image characteristics: image histogram and scattergram and their significance, Variance-Covariance matrix, Correlation matrix and their significance.


Radiometric and Geometric Corrections – Registration and Resampling techniques.


Image Enhancement – Contrast Enhancement: Linear and Non-linear methods; Spatial Enhancement: Noise and Spatial filters


Image Transformation – Principal Component Analysis (PCA), Discriminant Analysis, Color transformations (RGB - IHS, CMYK), Indices (Ratios, NDVI, NDWI).


Image Segmentation and Classification – Simple techniques.

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