Design And Implementation Of The Communication Jamming Signal Simulator Based On FPGA

The Communication Jamming Signal Simulator simulates the real battlefield communication environment,can generate different types of communication jamming signals,which provide a real field test environment to the communication device or communication reconnaissance equipment.The Communication Jamming Signal Simulator adopts the combination of software and hardware,has flexibility,versatility and compatibility characteristics.According to the design requirements and technical indicators,this article designs The Communication Jamming Signal Simulator based on FPGA in detail.The main research work of this article is: 1.First proposed the research background and significance of Communication Jamming Signal Simulator.By consulting the literature,researched the development status of Communication Jamming equipment domestic and foreign.Then researched the composition and workflow of the Communication Jamming System and common Communication Jamming Technologies.At the same time,used MATLAB to model and analysis time and frequency domain characteristics of the Communication Jamming signal.Including noise jamming signal,tone jamming signal,frequency sweep jamming signal,deception jamming signals.2.By analyzing the design requirements of The Communication Jamming Signal Simulator,this article presents the design and implementation of The Communication Jamming Signal Simulator based on FPGA.The system uses DDS technology,with a high performance RF DAC to achieve digital-to-analog conversion,FPGA and DSP are responsible for command analysis,control of DAC and other functions.It can generate four channels of independent communication jamming signals.3.Design the hardware of The Communication Jamming Signal Simulator.According to the overall design,first completed the design of FPGA and DSP and their peripheral circuits.Peripheral circuits mainly includes FLASH circuit for curing program,Memory circuit for curing program and power-up sequence circuit.Then completed the circuit design of DAC module.Finally,designed the power supply of the entire system.The hardware adopts modular design to ensure the board is easy to debug and maintain.4.Design the software of The Communication Jamming Signal Simulator.According to the workflow of equipment and the types of communication jamming signals,the software is mainly divided into command analysis unit,baseband code generation unit,modulation unit,frequency control word unit,digital up-conversion unit,noise jamming signal generation unit,tone jamming signal generation unit and swept jamming signal generation unit.Completed the software design of The Communication Jamming Signal Simulator by completing the software of each unit.5.Test and analyze the function and performance of the communication jamming signal simulator.Use the oscilloscope and amplitude-frequency characteristic instrument to test and analyze the output signal of the communication jamming signal simulator.It shows that the output signal of the simulator meets the design requirements of the agreement.