Research On The Performance Of Airborne Wireless UV Light Communication Jamming Link Of Formation UAV

Due to its flexible operation and high mobility,UAVs have been widely studied and applied in military and civilian fields in recent years.Compared with the functions of a single UAV,the formation UAV can not only meet the needs of various tasks,but also effectively improve the success rate of executing tasks.Wireless ultraviolet light communication is a new type of optical communication technology that has emerged in recent years.In order to achieve all-weather,non-direct line of sight and covert communication,it is widely used to realize communication in electromagnetic interference and wireless silent environment.When the wireless ultraviolet light communication system is transmitted to the formation UAV for communication,due to the positional relationship between the swarm UAVs and the mutual influence of the transceivers between the links,the receiving end of the working link often receives signals that do not belong to The optical signal of this group of links will not only occupy the signal bandwidth,but also affect the decoding process at the receiving end and affect the performance of the communication link.In the process of wireless ultraviolet optical communication,the atmospheric channel will interfere with the scattering of optical signal particles,thereby affecting the link performance of ultraviolet optical communication.The main research contents of this paper are as follows:(1)Wireless ultraviolet non-line-of-sight communication interference link model is established.The positional relationship between the transceiver ends of the wireless ultraviolet light communication link on the swarm UAV airborne during flight is studied,and the wireless ultraviolet light coplanar communication interference model and the wireless ultraviolet light non-coplanar communication interference model are established according to the positional relationship between the transceiver ends.And the interference model of wireless ultraviolet light non-coplanar and height difference communication.The Monte Carlo method is used to simulate the scattering of photons in the atmospheric channel,and the wireless ultraviolet optical communication channel is modeled and simulated.And by comparing the path loss data of the link calculated with the formula,the correctness of the Monte Carlo model in the ultraviolet optical communication is verified.The Monte Carlo model is used to study the influence of various angles and positions of the UAV airborne transmitter and receiver on the bit error rate.The simulation results show that when the interferer is below the receiver,the communication link performance is at the transmitter with an elevation angle of 20°.The best performance is achieved at 30°.When the interfering end is above the receiving end,the performance of the communication link gradually deteriorates with the increase of the elevation angle of the transmitting end.(2)The wireless ultraviolet non-direct-line scattering interference link model under different atmospheric channels is established.The swarms of drones are affected by the wake between the drones,and the drones located below and behind are severely affected.CFD modeling is used to model the wake between the lower and rear aircraft,and the influence of the wake at different positions on the communication performance of the interference link is studied.The Monte Carlo method is used to study the interference model,and the simulation results show that under the same conditions,the path loss of the wake between the lower aircraft is reduced by 9dB,and the path loss of the wake between the rear aircraft is reduced by 5dB.The reduction in flow is large.In addition,four common weathers are modeled,and the influence of the performance of the atmospheric channel on the performance of the wireless ultraviolet light interference link under the four weathers is studied.The order of sky,fog,and rain gradually deteriorates.To sum up,based on three interference models of wireless UV light communication,this paper uses Monte Carlo method to study the performance of wireless UV light communication link under different inter-machine wakes and different weather conditions,and obtains the existence of interference chain.The location of the sending and receiving end that is more suitable for communication during the road.