Study On The Reliable Mechanism Of Unmanned Aerial Vehicle(UAV) Ad Hoc Network

In recent years,with the development of science and technology UAV has appeared frequently in many fields,and played a powerful role.In the field of military UAV is mainly used for intelligence reconnaissance,military strikes,communications relay,airborne early warning and so on.UAVs have not only been used in militarily but also in all aspects of life,such as checking oil fields,cracking down on criminals,assisting search and rescue,and assisting disaster relief.At present,most of the use of UAVs is the use of single machine.The control method is limited to point-to-point communication,that is,the ground console communicates directly with the UAV.Using multiple unmanned aircraft network to perform tasks,you can expand the service airspace directly,enhance the duration indirectly,thus promoting the development of UAVs.Since the beginning of this century,mobile ad-hoc networks have drawn the attention of researchers.They have rich research achievements in the physical layer,link layer,network layer and cross-layer design.In the air,UAV nodes can meet the requirements of their operational scenarios by using ad-hoc network.However,the research on UAV ad-hoc networks is still in its infancy and in the simulation stage due to limited conditions.There are no mature technologies for Real environment currently.In order to explore the reliable ad-hoc mechanism of UAVs,This paper builds a UAV ad-hoc network on NS-3 simulation platform,simulates a variety of scenarios and compares the MAC protocol by adjusting the simulation parameters.These lay the foundation for the design of reliable cross-layer mechanism.The main research point of this paper is focused on two aspects.The first is the improvement of Network Simulatin 3(NS-3),including the improvement of the random walk mobile model and the encapsulation of a receiver and sender that can easily obtain the simulation results.The second is the comparison and analysis of the typical MAC layer protocols of UAV ad hoc networks.On the NS-3,the Wifi MAC protocol and the TDMA MAC protocol are designed and implemented,and a large number of simulations are carried out in different scenarios.The performance of the two MAC protocols is analyzed through the network performance parameter graph.