There are many applications involved in the radiation protection, homeland security, control fissile material and other detection of radio waves as well as their localizations. In the given article, we are talked about the basic directional detector based on semiconductor detectors array able to find out direction of the radioactive source. Single pad detectors of semiconductor are assembled in the rows and are separated by shielding matter that was subjected to the energy and type of radiations preferred to examine (for e.g. gamma rays, X-rays or neutrons). The signal's level, i.e. count rate, in all detectors all depends ...