多目标模拟IFF信号源—基带信号生成单元系统设计

发布时间：2018-06-05 11:31

本文选题：敌我识别 + 模拟信号源　；参考：《电子科技大学》2014年硕士论文

【摘要】：敌我识别是在军事战场上完成敌我属性的判定,在现代战争中扮演十分重要的角色。随着技术的进步,敌我识别信号的复杂度和保密性逐渐加强。模式5作为西方体制新型的敌我识别信号,具有识别概率高、抗干扰能力强、抗截获性能好等优点。多目标模拟IFF信号源能够产生相控阵雷达中各种制式目标和虚假目标,尤其可用于产生各种样式的干扰信号,来考核敌我识别询问应答接收机的抗干扰性能。本文介绍了各模式IFF询问应答信号的格式及信号生成的方法,对多种M5询问干扰样式的干扰效果进行仿真,设计了多目标模拟IFF信号源基带信号生成单元系统,并对其进行调试。针对M 5询问信号的特点,定义了4种M5询问干扰样式,分析了影响干扰效果的主要因素,包括干扰信号的发生频率、干扰信号的幅度、干扰信号的样式,并对各干扰样式在不同参数下的干扰效果进行了仿真和比较,得到了较为有效的干扰样式。整个系统采用FPGA+DSP架构,结构上可分为基带部分和中频部分。基带部分产生的M 1、M2、M3、MC及M5询问信号基带IQ数据,通过正交数字上变频器得到中频信号。本文最后对多目标模拟IFF信号源基带信号生产单元的硬件系统进行调试,包括电源模块调试、JTAG仿真接口调试、正交数字上变频模块调试等。通过对系统产生的M1、M2、M3、MC及M5的中频信号进行测试,测试结果满足IFF信号的格式要求。
[Abstract]:The identification of foe and foe plays a very important role in modern warfare. With the development of technology, the complexity and confidentiality of the identification signal are gradually strengthened. As a new type of identification signal in western system, mode 5 has the advantages of high recognition probability, strong anti-jamming ability and good anti-interception performance. The multi-target analog IFF signal source can produce various standard and false targets in phased array radar, especially can be used to generate various types of jamming signals to check the anti-jamming performance of the receiver. This paper introduces the format and signal generation method of IFF inquiry response signal in each mode, simulates the interference effect of various M5 interrogation interference patterns, and designs a multi-target analog IFF signal source baseband signal generating unit system. And debug it. According to the characteristics of M5 interrogation signal, four kinds of M5 interrogation interference patterns are defined, and the main factors influencing the jamming effect are analyzed, including the frequency of interference signal, the amplitude of interference signal, the pattern of interference signal, The jamming effect of each interference pattern under different parameters is simulated and compared, and a more effective jamming pattern is obtained. The whole system adopts FPGA DSP architecture, which can be divided into baseband part and if part. The base band IQ data of the M _ 1C _ 2M _ 3N _ MC and M _ 5 interrogatory signals produced by the baseband part are obtained by the orthogonal digital upconverter. Finally, the hardware system of the baseband signal production unit of the multi-target analog IFF signal source is debugged, including the debugging of the power module and the debugging of the simulation interface of JTAG, the debugging of the quadrature digital up-conversion module, and so on. The intermediate frequency signals of M1OM2M3M3 and M5 produced by the system are tested, and the results meet the requirements of IFF signal format.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN911.4

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