Railways to use hi-tech survey for high-speed train corridor
The railways will use LiDAR technology — which involves conducting an aerial survey, and is known to give accurate data on the contours of land, even below vegetation — to expedite work on India’s first high-speed train corridor between Mumbai and Ahmedabad.
The use of Light Detection and Ranging, or LiDAR, will allow the survey of the 508km corridor to be completed in 9-10 weeks against the normal 6-8 months. It will help the national transporter start ground work on the Modi government’s dream project by 2018. According to the plan, almost the entire corridor will be on an elevated track, except 21km that will be underground. Of the 21km, 7km will be undersea.
The survey will be conducted by a helicopter, which carries equipment, including a high-resolution digital camera (100 megapixel), a laser scanner and a data recorder. An official said LiDAR was a remote-sensing technology that measured distance by illuminating a target with a laser and analysing the reflected light. The GPS unit interacts with GPS satellites to finalise the ground control points.
“The total flying time for covering the full corridor will be 30 hours. The preparatory work and time taken in processing of data is quite high, but still the process allows the survey of the full 508km in 9-10 weeks instead of 6-8 months,” Mukul Mathur, executive director (PPP), railway board, said. The exercise is highly accurate and enables capturing data of buildings and forest,” Mathur said, adding that this technology would be used for the survey of a rail line for the first time. For the survey, the helicopter will fly at a height of 500 metres while identifying 15.6 points per square metre.
You might also like
Indian Railways waives off service charge on online booking of train tickets till March 31
The Indian Railways has dropped the service charges levied on online booking of tickets through its official website Indian Railway Catering and Tourism Corporation (IRCTC) till March 31, 2018. The
Cox & Kings voted ‘India’s favourite Tour Operator at Conde Nast Traveller India Readers’ Travel Awards 2016
Cox & Kings was crowned winner at the sixth edition of Conde Nast Traveller Reader’s Travel Awards (RTA) when it bagged the prestigious title of India’s favourite Tour Operator. The
US travel ban ‘not best way to protect’ America says UN
Under the executive order signed by President Donald Trump last Friday, refugees from all over the world will be denied US entry for 120 days. UN Secretary-General Antonio Guterres said