RS4011 Laser Scanning for Terrain Mapping Syllabus:

RS4011 Laser Scanning for Terrain Mapping Syllabus – Anna University PG Syllabus Regulation 2021

OBJECTIVE:

 To provide exposure to LiDAR mapping and its applications

UNIT I LASER AND SPACE BORNE LASER PROFILERS

LASER, Components of LASER: Active Material, Energy Source, Reflection Mirror – LASER Production- LASER Classification: Eye Safety, Class I to Class IV Lasers – Comparison of Airborne Laser Scanning with Ground Survey, Photogrammetry, GPS Survey and Satellite Stereogrammetry– LASER RANGING- Types of LiDAR: Range Finder LiDAR,Doppler LiDAR, DIAL – Ellipsoid and Geoid – Principles of Laser Ranging: Pulse Laser, Continuous Wave Laser –Space Borne Laser Missions – Geo Science Laser Altimeter System (GLAS), LiDAR In-Space Technology Experiment (LITE), Chandrayaan, CALIOP – Aerosol Monitoring and Measurement

UNIT II AIR BORNE LASER SCANNERS

Components of Airborne Laser Scanning System – GPS, IMU, LASER Scanner, Position and Orientation System(PoS) – Types of Scanning Mechanism and Ground Measuring Pattern – UAV based Topographic Laser Scanner – Synchronization of Laser Scanner and PoS- LASER Scanners Specification and Salient Features – Concept of Multi return – 3D Cloud Points – Reflectivity of Ground features – Range Correction Factor

UNIT III LIDAR DATA PROCESSING

Pre Processing: Direct Georeferencing, Combining Inertial and Navigation Data – Determination of optimal Flight Trajectory – Data processing – Co-ordinate Transformations – Geolocating Laser Foot Prints – Strip Adjustment – Digital Surface Model to Digital Elevation Model: Filtering, Ground Point Filtering – Flight Planning – Quality Control Parameters – Preparation of flight plan

UNIT IV LIDAR DATA MANAGEMENT AND APPLICATIONS

Airborne Laser Scanner Error Sources – LiDAR data format: ASCII vs Binary, LAS Format – Software used for LiDAR data processing and management – Merits of Airborne Laser Terrain Mapping – Overview of LiDAR Applications – 3D city models – Road and Building Extraction – Forestry Applications – Power Line Mapping.

UNIT V TERRESTRIAL AND BATHYMETRIC LASER SCANNER

Terrestrial Lidar: Static and Mobile (Vehicle Mounted) LiDAR -Terrestrial LASER Scanner Specification – 3D Point Clouds and Processing Software – Applications of Terrestrial LASER Scanning – Airborne Bathymetric LASER Scanner- UAV based Bathycopter – Specification – Depth of Penetration: Secchi Depth – Applications of Bathymetric LASER Scanner

OUTCOMES:

On completion of the course, the student is expected to be able to

CO1 Understand types of LASER and its classication, types of LiDAR and Satellite Laser Scanning Missions
CO2 Understand components of ALS, various scanning mechanism and concept of multi returns
CO3 Analyze and process the Navigation and Inertial data for optimal flight path selection and coordinate transformation techniques for geolocating laser foot prints
CO4 Apply derived products of ALS in various application domains with reference to case studies
CO5 Understand the concepts of TLS and ABS and its application

REFERENCES:

1. Jie Shan and Charles K. Toth, Topographic Laser Ranging and Scanning – Principles and Processing, Second Edition, CRC Press, Taylor & Francis Group, 2018
2. Pinliang Dong, Qi Chen, LiDAR Remote Sensing and Applications, 1st Edition, CRC Press 2018
3. George Vosselman and Hans-Gerd Maas, Airborne and Terrestrial Laser Scanning, Whittles Publishing, 2010.
4. Matti Maltamo, Erik Næsset, Jari Vauhkonen, Forestry Applications of Airborne Laser Scanning-Concepts and Case Studies, Springer, Dordrecht 2014, reprint edition, ISBN 978-94-017-8662-1
5. Michael Renslow, Manual of Airborne Topographic LiDAR, The American Society for Photogrammetry and Remote Sensing , 2013.
6. Zhilin Li, Qing Zhu, Chris Gold, Digital terrain modeling: principles and methodology, CRC Press, 2005
7. Roger Read and Ron Graham, Manual of Aerial Survey: Primary Data Acquisition, Whittles Publishing, 2002.