The Light Detection and Ranging (LiDAR) technology, an advanced topographic camera fitted on a drone, helped the municipal corporation and police to present a rerun of July 28, when the city was gridlocked for over 48 hours.
The Municipal Corporation of Gurgaon (MCG) used LiDAR cameras to delineate drainage system across the city between 5pm and 7.30 pm on Monday after heavy rain.
The MCG has five LiDAR cameras on a trial basis. They were used for the first time on August 28 to survey a locality. LiDAR is a technology that surveys and measures distance by illuminating a target with a laser light.
It has a higher advantage over other topographic data systems as it can cover terrains during the day or night, its rays have a higher penetration that can cover terrains in thick forests and water bodies.
The survey covered stretches on Delhi-Gurgaon Expressway on NH8, Delhi-Jaipur Expressway and Golf course road. MCG engineers identified clogged drains and blocked sewer networks after reviewing the map contours.
Based on the information, 27 super-suction water pumps were deployed at key stretches to reduce the waterlogging. MCG’s truck-mounted cranes were deployed at sites vulnerable to acute waterlogging to ensure traffic flow remained unhampered and encroachments were removed.
Upon reviewing of the map, it was found that the Badshahpur drain was receiving large amount of sewage flow from areas adjoining Golf Course and Golf Course Extension road.
A LiDAR camera shoots rapid amounts of laser rays at a surface. A sensor on the instrument measures the time it took for the ray to deflect and return. It helps in calculating the distance between the camera and the target with higher accuracy. Due to its high penetration level, it has a greater accuracy and constructs a three-dimensional map of the desired surface or terrain.
The information is automatically processed and uploaded at the MCG’s cloud database in the sector 34 office.
Each advanced LiDAR camera costs around Rs 40 lakh. MCG officials said the project has been cleared for execution of trials and tenders will be floated soon for hiring the private agency supplying the device.
The LiDAR technology has multiple uses it can identify properties accurately assisting the revenue department in collecting property taxes.
Sources said that on Sunday, the MCG conducted a LiDAR survey on a trial basis in Sushant Lok Phase 1.
MCG officials said they were able to identify structures, carpet area, and built-up area with the help of the technology. Around 2000 structures were covered in the survey.
Joint commissioner Rohit Yadav said that a Request for Proposal (RFP) has been prepared and will be floated soon to procure an agency.
“Currently, topographical survey that is in operation does not provide the desired quality and continuity. LiDAR will eliminate these deficiencies and three-dimensional mapping of MCG area will be carried out for planning and implementation purposes,” Yadav said.