实时频谱分析系统中多种触发捕获和数字荧光显示功能的设计与实现
发布时间：2019-04-09 18:04
【摘要】：近些年,通信技术日新月异,应用于无线通信的编码、调制技术不断改进,产生出许多用以优化带宽利用率、提高通信质量的新方法。人类享受更高通信质量的同时也给测试领域提出了新的更大的挑战。基于改善通信中的频谱容量和性能的考虑,完善的RF(射频)技术,如自适应调制、信号突发和跳频等被应用于通信传输中,此类技术不仅使得信号具有突发瞬变性而且表现出调制和频率随时间变化的特点。因此需要采用新的测试方案和更强大的信号监测功能来帮助发现、识别并捕获各种突发瞬态信号以及淹没在大信号下的小信号。本文基于频谱分析技术的国内外发展概况,提出具有数字荧光显示和多种触发捕获功能的实时频谱分析系统,重点研究和分析了频谱分析中的重叠帧技术、触发捕获技术、数字荧光显示技术等。其中利用重叠帧滑动步进有效地解决了频谱分析中的窗口效应,避免信号丢失。频率模板触发技术采用二维触发方式和存储控制方案触发采集各种异常信号。数字荧光显示技术通过高速傅里叶变换、数据压缩技术以及颜色等级设置,生动、直观地区分信号一段时间内的变化细节,文中同时在该部分权衡分析了两种位图数据提取方案,大大地缓解了系统各部分数据处理压力。另外本文还创新性地提出并实现了基于FPGA(现场可编程门阵列)的任意小数点位置对数运算。结合工程实践,对各模块在FPGA中的实现做了整体性能优化,并通过实时触发模块和数字荧光显示模块的实现对FPGA时序、芯片资源、功耗等方面做了优化分析并给出了相应的优化方案。最后通过完备的测试方案和软硬件测试平台对整个系统以及系统中各个模块进行了测试,给出了测试结果。本文设计实现的频谱分析、各种触发捕获功能以及数字荧光显示功能达到了设计指标要求,文中不仅给出了软件仿真结果,而且最后通过工程测试得到了实际的应用结果。通过软件仿真和最终的工程测试,系统各模块工作正常,稳定可靠,充分验证了文中各算法的可行性。可应用于各种测量仪器中。
[Abstract]:In recent years, communication technology has changed with each passing day, and it has been applied to the coding of wireless communication. Modulation technology has been continuously improved, resulting in many new methods to optimize the utilization of bandwidth and improve the quality of communication. While human beings enjoy higher communication quality, they also pose new and greater challenges to the field of testing. Based on the consideration of improving the spectrum capacity and performance in communication, perfect RF (Radio Frequency) technology, such as adaptive modulation, signal burst and frequency hopping, is used in communication transmission. This kind of technology not only makes the signal have sudden transient, but also shows modulation and frequency varying with time. Therefore, it is necessary to adopt new testing scheme and more powerful signal monitoring function to help discover, identify and capture all kinds of burst transient signals and small signals submerged in large signals. Based on the development of spectrum analysis technology at home and abroad, a real-time spectrum analysis system with digital fluorescence display and multiple trigger capture functions is proposed in this paper. The overlapping frame technology and trigger acquisition technology in spectrum analysis are mainly studied and analyzed. Digital fluorescence display technology, etc. The window effect in spectrum analysis is effectively solved by sliding step of overlapping frame, and the signal loss is avoided. Frequency template trigger technology uses two-dimensional trigger mode and storage control scheme to trigger and collect all kinds of abnormal signals. Digital fluorescence display technology through high-speed Fourier transform, data compression technology and color level settings, vivid, intuitive signal over a period of time changes in detail, At the same time, two kinds of bitmap data extraction schemes are analyzed in this part, which greatly alleviates the pressure of data processing in each part of the system. In addition, the logarithm operation of arbitrary decimal points based on FPGA (Field Programmable Gate Array) is proposed and implemented creatively in this paper. Combined with engineering practice, the whole performance of each module in FPGA is optimized, and the timing and chip resources of FPGA are realized by real-time trigger module and digital fluorescence display module. Power consumption and other aspects of optimization analysis and give the corresponding optimization scheme. Finally, the whole system and each module of the system are tested through a complete test scheme and software and hardware test platform, and the test results are given. The spectrum analysis, trigger capture function and digital fluorescence display function designed in this paper meet the requirements of the design target. Not only the software simulation results are given, but also the practical application results are obtained through the engineering test. Through software simulation and final engineering test, each module of the system works well and is stable and reliable, which fully verifies the feasibility of the algorithms in the paper. It can be used in all kinds of measuring instruments.
【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】：TM935.21
本文编号：2455410
[Abstract]:In recent years, communication technology has changed with each passing day, and it has been applied to the coding of wireless communication. Modulation technology has been continuously improved, resulting in many new methods to optimize the utilization of bandwidth and improve the quality of communication. While human beings enjoy higher communication quality, they also pose new and greater challenges to the field of testing. Based on the consideration of improving the spectrum capacity and performance in communication, perfect RF (Radio Frequency) technology, such as adaptive modulation, signal burst and frequency hopping, is used in communication transmission. This kind of technology not only makes the signal have sudden transient, but also shows modulation and frequency varying with time. Therefore, it is necessary to adopt new testing scheme and more powerful signal monitoring function to help discover, identify and capture all kinds of burst transient signals and small signals submerged in large signals. Based on the development of spectrum analysis technology at home and abroad, a real-time spectrum analysis system with digital fluorescence display and multiple trigger capture functions is proposed in this paper. The overlapping frame technology and trigger acquisition technology in spectrum analysis are mainly studied and analyzed. Digital fluorescence display technology, etc. The window effect in spectrum analysis is effectively solved by sliding step of overlapping frame, and the signal loss is avoided. Frequency template trigger technology uses two-dimensional trigger mode and storage control scheme to trigger and collect all kinds of abnormal signals. Digital fluorescence display technology through high-speed Fourier transform, data compression technology and color level settings, vivid, intuitive signal over a period of time changes in detail, At the same time, two kinds of bitmap data extraction schemes are analyzed in this part, which greatly alleviates the pressure of data processing in each part of the system. In addition, the logarithm operation of arbitrary decimal points based on FPGA (Field Programmable Gate Array) is proposed and implemented creatively in this paper. Combined with engineering practice, the whole performance of each module in FPGA is optimized, and the timing and chip resources of FPGA are realized by real-time trigger module and digital fluorescence display module. Power consumption and other aspects of optimization analysis and give the corresponding optimization scheme. Finally, the whole system and each module of the system are tested through a complete test scheme and software and hardware test platform, and the test results are given. The spectrum analysis, trigger capture function and digital fluorescence display function designed in this paper meet the requirements of the design target. Not only the software simulation results are given, but also the practical application results are obtained through the engineering test. Through software simulation and final engineering test, each module of the system works well and is stable and reliable, which fully verifies the feasibility of the algorithms in the paper. It can be used in all kinds of measuring instruments.
【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】：TM935.21
【参考文献】
相关期刊论文 前1条
1 郭连平;田书林;王志刚;罗浚溢;;并行数字下变频中的NCO实现研究[J];仪器仪表学报;2012年05期
，本文编号：2455410
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