The aim of this project is to provide an up-to-date GIS information, serving the needs of the different departments of Dubai Municipality, government departments, private sectors, and individual users, using the latest technology of scanning the earth’s surface by topographic GIS LIDAR data acquisition methods for the Emirate of DUBAI land including HATTA along with an up-to-date marine GIS LIDAR data acquisition method for the coastline of Dubai.
LIDAR technology, which is short for light detection and ranging, is the technology of using pulses of laser light striking the surfaces of the earth and measuring the time of pulse return. The LIDAR unit is mounted in an airplane coupled with global positioning instruments GPS, Inertial Measurement Unit IMU and a computer system, and uses a transmitter to produce near infrared laser pulses that are invisible to humans. These pulses are received back from the earth’s surface using a small telescope.
Deliverables
The main outputs of the project are the following:
The DTM (Digital Terrain Model) of all the project different areas.
The DSM (Digital Surface Model) of the scanned project areas.
TIN of both DTM and DSM data separately.
Break-lines of the Bare.
Earth model DTM.
One LIDAR terrestrial measuring station.
Filtered and classified geodatabase layers for:
Trees.
Bushes.
Power Lines.
Telecommunication high objects.
Pipes.
Buildings.
Roads. Bridges.
Other manmade structures.
Water Surfaces.
The under water bottom line surface.
LIDAR Applications
The resulted data and processed information of this project can be further used in many applications, some of which are listed below but applications are not limited to the following list:
Different GIS projects.
All applications that use DTM and DSM.
Urban planning.
Transportation corridor mapping.
Characterization of forest habitat and timber quality.
Assessment of stream quality; Riparian zone and flood plain mapping.
Hydrologic modeling and simulation.
Geologic hazard assessment.
Marine applications (Coastal Monitoring and Erosion Monitoring).
Power line Mapping.
Monitoring of deposits and mines.
Archeology and Environmental protection.
LIDAR Advantages
In compare to other methods of topographic data collection, LIDAR has gained considerable acceptance in both scientific and commercial communities as a tool for topographic measurement in terms of:
High Accuracy.
Time of data acquisition and processing is significantly less for LIDAR compared to other techniques.
Weather independence, data can be collected at night and can be operated in slightly bad weather and low sun angle conditions.
Provide topographic measurements of the surface underneath.
Cost, LIDAR could achieve good performance at a lower cost.
