(SEM IV) THEORY EXAMINATION 2017-18 GEOINFORMATICS

GEOINFORMATICS – B.Tech (SEM IV), RCE-402

This is a 3-hour, 70-mark theory examination that checks a student’s knowledge of photogrammetry, remote sensing, digital image processing, GIS, GPS, and geospatial data concepts.
The paper is divided into three sections: basic concepts (A), detailed explanations (B), and analytical/computational questions (C).
 

SECTION A — Short Conceptual Questions (2 × 7 = 14 Marks)

This section contains 7 brief questions covering fundamentals of geoinformatics.

Topics include:

Photogrammetric survey                                               Remote sensing

Electromagnetic spectrum in remote sensing               Digital image processing

GIS definition                                                                 Attribute data

GPS basics

These questions test basic definitions and conceptual clarity.
 

SECTION B — Descriptive / Explanation Questions (7 × 3 = 21 Marks)

Attempt any 3 of 5 questions.
These require detailed explanation, diagrams, or examples.

Topics include:

Aerial photography + influencing factors

Remote sensing + advantages + ideal remote sensing system

Digital image & digital image data formats

GIS components (hardware, software, data, methods, people)

GPS principle of position determination

This section checks analytical understanding and descriptive knowledge.
 

SECTION C — Long / Analytical Questions (7 marks each)

Each question has two alternative parts (a or b).
Requires calculations, comparisons, or deeper technical explanation.

Q3 – Aerial Surveys / Area Calculation

Difference between aerial photography & aerial photogrammetry
OR

Calculate flooded ground area using dot grid on aerial photo

Q4 – Remote Sensing Concepts

Spectral reflectance curves, atmospheric windows, resolution
OR

Multiconcept in remote sensing + flood study applications

Q5 – Digital Image Processing

Image rectification & its types
OR

Image classification: supervised vs unsupervised

Q6 – GIS Data Models & Functions

Raster & vector data
OR

Functions of GIS + GIS applications

Q7 – GPS Segments / DCPS

Functional segments of GPS
OR

Working principle of DCPS

This section tests problem-solving, differentiation, technical reasoning, and spatial data understanding.
 

 OVERALL PURPOSE OF THE EXAM

The paper evaluates whether students can:

Understand fundamentals of photogrammetry & aerial surveying

Explain remote sensing concepts (EM spectrum, reflectance, resolution, sensors)

Describe digital image processing & classification methods

Work with GIS concepts (data models, components, applications)

Understand GPS working principles & functional segments

Apply geospatial techniques for real-world problems (floods, mapping, analysis)

It tests both theoretical knowledge and practical understanding essential for geospatial, civil engineering, environmental, and GIS-related fields.