New Delhi, Sept. 23 -- The Municipal Corporation of Delhi (MCD) on Tuesday launched a drone-based geographic information system (GIS) and digital survey pilot project to strengthen property tax assessment across the city, senior civic officials said. The first phase where drone surveys are being carried out covers Rohini-F ward in Rohini zone and Gharoli ward in Shahdara south zone, officials said. The exercise will use drone surveys, LiDAR-based mapping, geo-tagging and 3D digital modelling to create an integrated property database, officials said. "The survey is expected to strengthen MCD's property tax administration. It will help in identifying wrongly mapped or duplicate property records and assess additional floors or constructions no...