Map is the basis of all decisions and plans of development, and the need for its availability and preparation is not questioned by anyone. One of the main problems of our country is the lack of access to new and up-to-date coverage maps from all over the country. Coverage maps are a set of overlapping maps on the same scale that together cover the entire lands of a country. Such maps
are usually needed on different scales.
At present, coverage maps for the entirety of Iran are available on two scales of 1: 250,000 and 1: 50000. Unfortunately, the information on these maps is very old and belong to years ago, so that there is no indication of the current situation in most residential areas due to recent growth and development. On the other hand, many efforts have been made by the two major planning agencies, namely the Geographic Organization of the Armed Forces and Iran National Cartographic Center, to prepare and keep up-to-date coverage maps. The main problem is that it is not possible through traditional surveying tools (aerial photography, photogrammetry and ground-based geodesy) to produce maps at such speed and breadth to make certain that new and up-to-date maps are always available.