… RTK, which achieves performances in the choice of some centimeters, is a method normally used in surveying applications. Section of Relief and Rehabilitation: DEM of catastrophe susceptible regions should help in evaluating the problems of catastrophe. Use of topographical maps and DEM will ease the choice of relief distribution https://andersonuvvvt.ageeksblog.com/31284577/rumored-buzz-on-contour-survey-in-dhaka