基于ARM和FPGA的NAVTEX接收机研究与设计
发布时间：2019-02-09 17:37
【摘要】：NAVTEX(奈伏泰斯)系统是以窄带直接印字电报(NBDP)的方式发送和自动接收航行警告、气象警告和紧急信息(统称海上安全信息)的系统,为保证船舶的安全航行发挥着极其关键的作用。目前,国外的NAVTEX技术已经非常成熟,而国内的起步时间相对较晚,自行研制并通过中国船级社CCS认证的NAVTEX接收机很少；随着海洋经济的发展以及国内中文NAVTEX接收机国家标准的实施,开发拥有自主知识产权并且能接收中文信息的NAVTEX接收机具有重要的现实意义。 本文通过对NAVTEX系统发展现状的介绍,在实验室原有的研究基础上提出了基于ARM和FPGA的NAVTEX接收机设计方案。系统严格按照国际及国内NAVTEX接收机标准研制和开发,支持中英双语系统,可接收518/486/490/4209.5kHz四频点的NAVTEX信息。 系统采用以ARM+FPGA为主架构的硬件平台,辅以相应的接口通信、设备电源、存储模块等电路,软件采用基于Linux操作系统的嵌入式开发环境。本系统具有通用性强、模块化开发等特点,便于进行后端功能性的升级和扩展。 系统采用软件无线电技术,用数字解调替代传统模拟解调,增加了系统的灵活性和可升级性；用彩色液晶LCD显示文本信息的方式更好地实现了人机交互；采用多线程的任务管理模式和数据库的文件管理系统来保证和提高系统的实时性和稳定性；实时的INS通信保证了NAVTEX接收机对各种信息的即时更新,提高了船舶航行的安全性。 通过自行研制的NAVTEX验证平台的实际测试,本文所设计的基于ARM和FPGA的NAVTEX接收机已经能正常工作,测试结果表明：接收机能成功接收中英文的NAVTEX信息,在-110dbm的发射信号强度下,英文NAVTEX信息接收误码率在4%以下,中文NAVTEX信息接收误码率在1%以下,接收机灵敏度和功能满足NAVTEX接收机国家标准。
[Abstract]:The NAVTEX system is a system that sends and automatically receives navigational warnings, meteorological warnings and emergency information (collectively referred to as maritime safety information) by means of narrow band direct telegram (NBDP). In order to ensure the safe navigation of ships plays an extremely critical role. At present, the foreign NAVTEX technology has been very mature, but the domestic start time is relatively late, the NAVTEX receiver developed by ourselves and certified by CCS of China Classification Society is few; With the development of marine economy and the implementation of national standards for Chinese NAVTEX receivers, it is of great practical significance to develop NAVTEX receivers with independent intellectual property rights and the ability to receive Chinese information. This paper introduces the development of NAVTEX system and puts forward the design scheme of NAVTEX receiver based on ARM and FPGA based on the original research in laboratory. The system is developed strictly in accordance with the international and domestic NAVTEX receiver standards. It supports bilingual systems in Chinese and English, and can receive NAVTEX information from four frequency points of 518/486/490/4209.5kHz. The system adopts the hardware platform based on ARM FPGA, supplemented by the corresponding interface communication, equipment power supply, storage module and so on. The software adopts the embedded development environment based on the Linux operating system. The system has the characteristics of generality, modularization, etc. It is convenient to upgrade and extend the back-end function. The system adopts software radio technology, replaces the traditional analog demodulation with digital demodulation, increases the flexibility and scalability of the system, and realizes better man-machine interaction by displaying text information with color liquid crystal LCD. The multithread task management mode and the database file management system are adopted to ensure and improve the real-time and stability of the system, and the real-time INS communication ensures the NAVTEX receiver to update all kinds of information immediately and improves the safety of ship navigation. Through the actual test of the self-developed NAVTEX verification platform, the NAVTEX receiver based on ARM and FPGA designed in this paper has been able to work normally. The test results show that the receiver can receive NAVTEX information in both Chinese and English successfully, and under the intensity of-110dbm transmission signal, The error rate of English NAVTEX information is less than 4%, and that of Chinese NAVTEX information is less than 1%. The sensitivity and function of the receiver meet the national standard of NAVTEX receiver.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN851
本文编号：2419221
[Abstract]:The NAVTEX system is a system that sends and automatically receives navigational warnings, meteorological warnings and emergency information (collectively referred to as maritime safety information) by means of narrow band direct telegram (NBDP). In order to ensure the safe navigation of ships plays an extremely critical role. At present, the foreign NAVTEX technology has been very mature, but the domestic start time is relatively late, the NAVTEX receiver developed by ourselves and certified by CCS of China Classification Society is few; With the development of marine economy and the implementation of national standards for Chinese NAVTEX receivers, it is of great practical significance to develop NAVTEX receivers with independent intellectual property rights and the ability to receive Chinese information. This paper introduces the development of NAVTEX system and puts forward the design scheme of NAVTEX receiver based on ARM and FPGA based on the original research in laboratory. The system is developed strictly in accordance with the international and domestic NAVTEX receiver standards. It supports bilingual systems in Chinese and English, and can receive NAVTEX information from four frequency points of 518/486/490/4209.5kHz. The system adopts the hardware platform based on ARM FPGA, supplemented by the corresponding interface communication, equipment power supply, storage module and so on. The software adopts the embedded development environment based on the Linux operating system. The system has the characteristics of generality, modularization, etc. It is convenient to upgrade and extend the back-end function. The system adopts software radio technology, replaces the traditional analog demodulation with digital demodulation, increases the flexibility and scalability of the system, and realizes better man-machine interaction by displaying text information with color liquid crystal LCD. The multithread task management mode and the database file management system are adopted to ensure and improve the real-time and stability of the system, and the real-time INS communication ensures the NAVTEX receiver to update all kinds of information immediately and improves the safety of ship navigation. Through the actual test of the self-developed NAVTEX verification platform, the NAVTEX receiver based on ARM and FPGA designed in this paper has been able to work normally. The test results show that the receiver can receive NAVTEX information in both Chinese and English successfully, and under the intensity of-110dbm transmission signal, The error rate of English NAVTEX information is less than 4%, and that of Chinese NAVTEX information is less than 1%. The sensitivity and function of the receiver meet the national standard of NAVTEX receiver.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN851
【参考文献】
相关期刊论文 前3条
1 蒋贵全;张辉;王国锋;;基于Linux的FPGA数据通信接口驱动设计与实现[J];计算机应用;2009年09期
2 金文光;杨雯;唐少华;;奈伏泰斯系统信号解调算法综述[J];中国航海;2008年02期
3 金文光;唐少华;张正宇;;中英文奈伏泰斯接收机软件设计和实现[J];中国航海;2009年03期
相关硕士学位论文 前4条
1 邱洪;基于ARM的NAVTEX接收机的设计与实现[D];哈尔滨工程大学;2011年
2 付震;NAVTEX接收机主控单元软件设计与实现[D];大连海事大学;2009年
3 梁志刚;基于AT91SAM9261的嵌入式Linux的移植及其应用研究[D];浙江工业大学;2009年
4 唐少华;双通道NAVTEX接收机的研制[D];浙江大学;2010年
，本文编号：2419221
本文链接：https://www.wllwen.com/falvlunwen/zhishichanquanfa/2419221.html
