The Simulation Research About System's Electromagnetic Interferrence Between UAV System And UWB Signals

Unmanned Aerial Vehicle(UAV) is an independent aerial vehicle which is equipped by embedded navigation computer,GPS,inertial navigation unit,vidicon and wireless communication equipments. UAV can navigate independently in certain area and completely works as the object identified and located. It is more and more widely applied in military,scientific research and civil servings. The current navigating status and location need to be known to control the vehicle, and because of that the real-time communication module is a very important component to the UAVS. It is usual to adopt direct—sequence spread-spectrum (DSSS) system which employs fake random codes to be the basic signal in the up control communication data links.Ultra Wide Band (UWB) technique is a revolutionary wireless communication technique which is developing at full speed in the whole world in these years. We defined a signal whose frequency band is upper than 1.5GHz or the bandwidth is 25% wider than its center frequency to be the UWB signal. Because the UWB communication system is using a wide frequency band where so many other kinds of wireless communication systems exist, including many very important wireless communication systems which used by the government or the security apartment, it is necessary to discuss the coexistence problem of the UWB system and other wireless communication systems, especially the EMI problem of UWB signal to the ordinary wireless communication signals.As the information technology developing faster and faster, UAV is used more and more widely especially in the military area. It is important to analysis other signal's EMI problem to the UAV system. Simulation is the main method of the UWB signals and the UAVS for electromagnetic interference problem research in this paper, and there is some analysis about the experiment result.