Small-unmanned aerial vehicle is a small aircraft, which fly without direct human contact and is controlled by the remote control. The need for gathering information from the air in case of natural disasters and accidents has increased in recent years. Small-unmanned aerial vehicles have been attracting a great deal of attention as a safe and efficient means of acquiring such information. Due to its various features, such as easy to operate, easy to transport, high endurance, low life cycle cost, long picture taking range, high quality image and video, real time data transfer and capable to perform in all weather conditions, the demand of small-unmanned aerial vehicle is growing. Various types of small-unmanned aerial vehicle are light fixed-wing SUAV, heavy fixed-wing SUAV, multi-rotor VTOL SUAV and nano SUAV. These small-unmanned aerial vehicles plays an important role in many armed forces and civilian missions including border surveillance, military attacks, weather determination, mapping, surveying, and regional law enforcements.