基于FPGA的GPS模拟源数据回放系统的研究与实现

发布时间：2018-05-29 15:48

本文选题：FPGA + GPS　；参考：《南京邮电大学》2013年硕士论文

【摘要】：域，包括车辆导航、大地测M、导弹制导等。随着我II工业化发展，GPS应用越来越广泛.特别在军屯领域里人迨使用。GPS接收机能测试变得尤为亟要，这就孟要设I卜一款携带方便、功托低、性能优越的信号模拟器。这方面的研究还处于起步阶段，设计出的模拟器存在体枳大、功耗高的问题，这样就了我军装备的野外使用。本论文提出了一个基于FPGA的模拟源数据回放系统，将模拟信弓?数据存放在CF卡从而大大简化了数字信号处理部分的设计难度，有效地减小了系统体积，降低了功耗。GPS信号特点，提出系统指标要求，设I十出系统的总体方案：采用种“一主机+CF卡号处理”的方案。该方案由以下两大部分组成，第一部分是模拟数据生成及下载，第分足模拟数据回放及信号产生，并对模拟源数据回放系统作了详细的分析，对采样模控制模块和模拟器射频电路进行了设汁。依据系统方案，FPGA采用自顶向下模块划思想，将系统划分为串口转换模块，串口时钟信号产生模块，分频模块、si4133配置，AD9777配置模块，CF卡读写控制模块，进而对各个模块分别编程并仿真，直到所块满足其设it功能。将数据回放系统各个模块进行统一的整合，，经过仿真、系统联调，设汁方案完全满足GPS模拟信号源的性能指标要求。
[Abstract]:Domain, including vehicle navigation, geodetic M, missile guidance and so on. With the development of our II industrialization, GPS is applied more and more widely. Especially in the field of military and tun, it has become particularly important to use .GPS receiver to test, so we must set up a signal simulator which is easy to carry, low in performance and superior in performance. The research on this aspect is still in its infancy, and the designed simulator has the problems of large trifoliate orange and high power consumption, so the field use of our military equipment is achieved. In this paper, an analog source data playback system based on FPGA is proposed. The data stored in CF card greatly simplifies the design difficulty of the digital signal processing part, effectively reduces the system volume, reduces the power consumption. The overall scheme of I / O system: adopt the scheme of "one host CF card number processing". The scheme is composed of the following two parts: the first part is the analog data generation and download, the first part is the analog data playback and signal generation, and the analogue source data playback system is analyzed in detail. The sampling mode control module and the RF circuit of simulator are designed. The system is divided into serial port conversion module, serial port clock signal generation module, frequency division module si4133 configuration module AD9777 configuration module and CF card read and write control module. Then each module is programmed and simulated, until the block meets its it function. All the modules of the data playback system are unified and integrated. After simulation, the system is combined and adjusted, and the juicing scheme can fully meet the performance requirements of the GPS analog signal source.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

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