复杂CNI信号环境模拟器的研究与实现

发布时间：2018-03-26 02:57

本文选题：CNI　切入点：复杂信号环境　出处：《电子科技大学》2014年硕士论文

【摘要】：为了适应未来电子战装备测试验证需求,开展在复杂电磁信号环境下通信信号、导航系统信号、IFF系统信号、数据链网络信号的截获、分析、识别,以及作战对象信号和环境背景信号的区分识别等深入研究是十分必要的。随着电子战装备的侦察截获能力、快速捕获能力、高分辨率信号分选能力的不断提高,对于电子战装备的测试,需要在不同战术背景和试验条件下,逼真地模拟产生宽瞬时频段、时隙可控、频率可控、信号样式可调的复杂CNI信号环境。用实体电台来模拟战场通信信号,不仅会浪费大量的财力和物力,而且根本无法满足新体制装备测试试验的要求;用标准测试仪器对设备性能进行测试,但是由于被测试对象的保密性、非标性,标准测试设备的针对性、固化性、可操作性及测试集成度低的问题,很难满足日益复杂的电子战装备内场和外场测试需求。本文在广泛收集国内外卫星通信信号、战术通信信号、数据链信号、导航信号及IFF信号等文献资料基础上,对复杂环境信号的信号类别、时频特点、细微特征及产生方式等特征进行了分析。根据复杂环境信号的多体制性、突发性、时隙性,从系统的复杂度、可实现性考虑,以硬件平台为载体,软件可重构、可配置思路,给出了复杂CNI信号环境模拟器系统总体设计方案。针对超过20种时隙可控、频率可控调制信号(模拟调制、PSK调制、QAM调制、CPM调制、APSK调制、FSK调制等)的模拟,从信号空间角度,对调制映射方式进行了详细分析,给出了相应实现结构。结合时隙分配、多速率的调制实现结构,并从系统小型化、稳定性角度考虑,对多速率升采样模块进行了优化设计,也对多信号环境关注的大动态范围进行了仿真分析,完成FPGA资源占用方面进行评估,为基带板设计提供了参考依据。另外,本文重点完成了波形处理模块的硬件设计,分析了器件选型依据,给出了硬件实现结构。最后,论文给出了系统测试连接关系和测试方法,得到了模拟调制时域测试图、频域测试图,数字调制星座测试图及EVM测试值,以及复杂多信号的时域频域测试结果。
[Abstract]:In order to meet the needs of testing and verification of electronic warfare equipment in the future, the interception, analysis and identification of communication signal, navigation system signal and IFF system signal, data link network signal under complex electromagnetic signal environment are carried out. It is very necessary to study the distinction and recognition of target signal and environment background signal. With the improvement of reconnaissance and interception capability, fast capture capability and high resolution signal sorting ability of electronic warfare equipment, For the testing of EW equipment, it is necessary to simulate the wide instantaneous frequency band, the time slot is controllable and the frequency is controllable under different tactical background and test conditions. The complex CNI signal environment with adjustable signal style. Using entity radio to simulate battlefield communication signal will not only waste a lot of financial and material resources, but also can not meet the requirements of the new system equipment testing test. The performance of the equipment is tested with standard test instruments, but due to the confidentiality, non-standard, pertinence, solidification, maneuverability and low test integration of the standard test equipment, It is very difficult to meet the increasingly complex requirements of field and outfield testing of electronic warfare equipment. Based on the extensive collection of domestic and foreign satellite communication signals, tactical communications signals, data link signals, navigation signals and IFF signals, etc. The signal types, time-frequency characteristics, subtle features and generation methods of complex environment signals are analyzed. Considering the complexity and realizability of complex environment signals, the characteristics of multi-system, sudden, time slot, and so on, are considered. Taking the hardware platform as the carrier, the software can be reconfigurable and configurable, the overall design scheme of the complex CNI signal environment simulator system is presented. The simulation of frequency controlled modulation signal (analog modulation PSK modulation QAM modulation CPM modulation APSK modulation FSK modulation etc.), from the point of view of signal space, the modulation mapping mode is analyzed in detail, and the corresponding realization structure is given. The structure of multi-rate modulation is realized. Considering the miniaturization and stability of the system, the design of multi-rate up-sampling module is optimized, and the large dynamic range of multi-signal environment is simulated and analyzed. In addition, this paper focuses on the hardware design of the waveform processing module, analyzes the basis of the device selection, and gives the hardware implementation structure. In this paper, the test connection and test method are given, and the time domain test diagram, frequency domain test diagram, digital modulation constellation test diagram and EVM test value are obtained, as well as the time domain and frequency domain test results of complex multi-signal.
【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】：TN911.7

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