In order to refine the outputs from Satellite Imageries control point data have to be retrieved through DGPS Survey. We shall collect from the client list of points and their locations and plan the DGPS survey. Benchmarks from Survey of India if available shall be provided by client or we will look in to options to extract. We shall field a team of 3 for the survey. The DGPS points to be taken are to be shown in the field to the field team by the client’s focal point.
SAKURA-GSR shall adopt Static Surveying method while conducting DGPS survey. This method is adopted since it is the most precise GPS surveying technique and provides a high level of precision. SAKURA GSR uses Dual frequency Leica / Trimble equipment will be used for the DGPS survey. Two receivers (one receiver at each point defining the baseline) will be used. The field team will ensure that each receiver logs observations simultaneously from at least four common satellites. SAKURA-GSR team will strictly observe each of the control points for 30 minutes per point. The observed coordinates will be processed in the office using Suitable post processing software and coordinates will be derived in latitude-longitude and UTM (WGS84).