节点文献
小型高速数据采集、处理与回放模块的设计与实现
The Design and Realization of Small High-speed Module about Data Acquisition, Processing and Replaying
【作者】 曲少波；
【导师】 常青；
【作者基本信息】 国防科学技术大学 ， 信息与通信工程， 2007， 硕士
【摘要】 弹载有源雷达信号干扰机,对突破敌方雷达网有重要意义。作为干扰机核心部件之一的信号处理模块,在采用高速数字信号处理技术后,将使干扰机具有更加灵活多样的干扰方式。针对这一应用需求,本文研究了弹载条件下,小型化、宽频带的雷害信号干扰机的实时数据采集与处理技术。论文首先根据干扰机的应用需求,研究了高速数据采集、处理与回放模块的功能组成。接着研究并规划了在现有条件下各功能组成单元的实现方法,即:采用新型高速、高性能的ADC,FPGA和DAC芯片分别作为采集、处理与回放单元主要功能的实现芯片。然后,采用匹配的差分布线解决了高速数据传输时的串扰与反射问题;采用布局优化,规则驱动布线等措施解决小型化带来的布局布线难题。最终,完成了小型高速数据采集、处理与回放模块的设计与实现。论文研究的小型高速雷达信号采集与处理技术,为解决现有数字干扰机瞬时带宽相对较窄与雷达信号频带相对较宽的矛盾提供了一种可行的解决方案。论文最后总结了取得的工作成果,提出了下一步的研究方向。
【Abstract】 The active jammer, which is used in missile, is significant in breaking through enemy’s radar system. If the main part of jammer uses the new DSP (Digital Signal Processing) technology, the jammer can realize more flexible and more various jamming algorithm. Just because of this application foreground, the study of the module about data acquisition, processing and replaying is put forward.First, according to the request of jammer’s application, the thesis studies the functions of this module. Second, we study and plan the realization of all parts of the module’s functions. Third, we use impedance-matching differential line to solve the problem of crosstalk and reflection in high-speed signal transfer; To solve the place and routing problems in small PCB (Printed Circuit Board), we use some methods, such as the place-optimizing method, the rule-driving routing method; The basic signal-delay jamming algorithm and the circuit of module initialization are realized by using FPGA (Field Programmable Gate Array) technology. Lastly, we realize and test the module.In a word, the module’s realization gives us a way to solve the contradiction that the bandwidth of the digital jammer in existence is not in accord with the bandwidth of radar’s signal.At last, the paper summarizes the content and points out the further study emphases and direction.