| With the continuous development of modern information science and technology and technological innovation,communication technology and network technology are gradually moving towards networking,modularization,and intelligence.With this background,avionic systems are also developing towards cloud networks and intelligent processing.In this field,avionic radar technology has been developing from traditional centralized and fixed radar system to phased array conformal skin antenna,to accomplish a multi-functional,high-speed information transmission and distribution,information distributed processing and integration smart skin system.Among them,how to realize the high-speed communication between the digital beamforming module and each module of skin in smart skin network and the data transmission and switching between each module of skin are the key technical issues.According to system requirements discussing above,thesis analyzes the current relevant technology of array network and ralated network implementation pattern,sets up the design of optical network of smart skin,and carries out theoretical research and practical simulation for the key processing about data transmission and switching,completing the construction of the optical network of smart skin.In order to realize the information interactive between multiple array units of skin optical network and meet the transmission requirements of various information in the skin optical network,the thesis firstly discusses the node structure of the skin optical network based on wavelength division multiplexing technology.Secondly,a three-level skin optical network architecture is proposed,which uses optical fiber as the physical path of internetworking to expand the network transmission rate and expand the network communication capacity through wavelength division multiplexing technology.At the same time,in order to achieve the architecture of all optical information network and meet the requirements of all optical information interactive and intelligent networking,a new type of interconnection network application technology and engineering implementation scheme for multi-channel information interactive is explored.For the simulation of optical switching network in thesis,considering the development the bottleneck of optical switching,difficulty of implementation and design of the simulated nodes,FPGA is used as the hardware platform for simulation implementation,and then develop the functions of each part of the network by using the programmable ability of FPGA.Using FPGA as the simulated network node,the definition and function of the node are designed according to the hardware platform logic,including the basic control and response communication between network nodes,node state interaction communication,data switching channel design,etc.Test part adopts 4×4-scale network,realizing the control of array network and logical interaction of data transmission and switching,completing the technical points of network management,network configuration,and data transmission and switching,and passing the network control test,data transmission and switching test and channal transmission speed test.According to the research and achievement of the thesis,it has certain reference significance for radar array optical network systems. |
