Research On Optical Fiber High Speed Transmission Technology In Infrared Array Semi-physical Simulation

With the rapid development of infrared and laser technology,infrared-guided weapons are increasingly mature,and constantly toward to the direction of strong real-time,high resolution and good control for development.As the main test and evaluation means of guided weapons,the infrared array hardware-in-the-loop simulation system is also increasing the demand for data volume and data transmission rate,as for the existing shortcomings of poor real-time of hardware-in-the-loop simulation system,this paper has carried out the research on the infrared array semi-physical simulation fiber high-speed transmission system.The system uses independent research and development of optical fiber communication protocol,independent intellectual property rights,out of the dependency of the original system on the reflective memory card.Also,it has more reasonable structure,with the characteristics of high transmission speed,strong portability and so on.It can ensure that the real-time of infrared array semi-physical simulation system.The main contents of this paper are as follows:Firstly,the topology of the fiber channel protocol and the structure of the protocol stack which are widely used in the field of optical fiber network communication are studied.The optical fiber communication protocol suitable for digital communication system is proposed.Combined with the existing analysis of system scheme,the infrared array of semi-physical simulation of high-speed optical fiber transmission system based on self-design optical fiber communication protocol optical fiber communication protocol is constructed,and the mechanism of the bus,the mechanism of optical fiber communication and the performance of the main controller are studied and analyzed,which provides the necessary guarantee and guidance for the functional design of each part of the system.Secondly,the overall hardware architecture of the infrared array hardware-in-the-loop simulation system is planned,and the hardware of each part is analyzed and designed.The system hardware framework including bus interface unit,parallel-to serial or serial-to-parallel conversion unit,optical transceiver module unit,main controller unit and power module is established.And based on the signal integrity theory,the high-speed transmission system cabling technology is studied,which provides the guarantee for the function realization of the system hardware.Then,the key technologies such as cross-clock domain and timing optimization in logic design are studied.Based on this,the overall structure of optical fiber communication protocol IP(intellectual property)core is constructed,and the bus control module,buffer module,transmit and receive control module are analyzed and designed,the function of each module is also simulated,the results show that each module can work properly.Finally,the system test platform is built and the host computer software and driver are programmed.The bus interface and the optical fiber communication function are tested separately to ensure that they can work normally.As well as,the system is tested and its performance is evaluated by embedded logic analyzer.The results show that the infrared array of semi-physical simulation of the optical transmission system can achieve a high transmission rate and meet the requirements of the project.