We BPC Pi have specialists with us who indulge their time to invent the possible ways of using LiDAR and give the best solution amongst them to fulfill the needs of our clients.
What is LiDAR?
LiDAR stands for Light Detection and Ranging. LiDAR is the combination of light and radar where light is used instead of radio waves to determine range, angle or velocity of an object. LiDAR scanner works by illuminating the targeted object with a pulsed laser light, which can be of ultraviolet, near infrared or visible light, and then measuring the reflected laser with the help of a sensor.
3D representation of the target object is made by using the laser return time and wavelength. Different types of substances including solid metallic and non-metallic objects like stones, semi solid or liquid objects like rain, even aerosol, clouds, mist etc. can be targeted by LiDAR scanner.
LiDAR is very accurate and precise technology which uses a laser pulse to strike the object. Regular photogrammetry or other survey technology can miss the surface elevation value that is hidden by vegetation or forest canopy. But LiDAR can penetrate through the object and detect the surface value.
Based on the platform LiDAR can be of four types
These LiDARs are specifically designed for space shuttles. These are lightweight, with high vertical resolution so that these are able to measure the distribution of aerosols, clouds and trace gases such as ozone and water vapor, tropospheric winds and the vertical distributions of atmospheric pressure and temperature.
What kind of solutions can be provided using a LiDAR?
Forest planning and management | Environmental assessment | Industrial survey | Defense industry
LiDAR technology has a huge contribution in the environmental assessment which is done to protect the plants and environment. River survey, oceanography using LiDAR has become very popular now a day to predict possibilities of flood or tsunami by analyzing the changes of the water surface label and other underwater information. LiDAR wavelength is shorter and hence can image the objects which are of the same or larger wavelength. hence LIDAR can detect pollutant particles of carbon dioxide, Sulphur dioxide, and methane. This information helps researchers to create pollutant density map of the area which can be used for better planning of the city.
LiDAR technology has been used widely for industrial survey and management. From building planning to railway mapping or tunnel design, there is no other option than LiDAR technology. Airborne LiDARs are used for survey in the solar plant especially to check the position of the solar panels. Ground-based LiDARs are used for the design of the exterior as well as the interior of the building. As LiDAR can detect the smaller molecules of minerals and gasses it has been used in oil and gas exploration and mining industry. LiDAR is used in the wind farm to calculate the direction and strength of the wind.
Forest planning and management
LiDARs are widely used in forest planning and management. It is used to measure the vertical structure of the forest canopy and also used to measure and understand canopy bulk density and canopy base height. By analyzing LiDAR point clouds forest fire management is also possible. LiDAR image helps to monitor the possible fire area which is called fuel mapping (fire behavior model).
The military depends on LiDAR technology to map out the exact terrain of the battlefield and know the exact position of the enemy and their capacity. The technology can also be used to locate all enemy weaponry including tankers and help in neutralizing the threat on a much larger scale.
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