【作者】 顾兵；

【导师】 刘繁明；

【作者基本信息】 哈尔滨工程大学 ， 导航、制导与控制， 2006， 硕士

【摘要】 气象传真广播几乎覆盖了世界各地的海洋，利用传真接收机，船舶可以及时获得气象部门发布的海上天气分布情况、天气预报和警报等大量有用的海洋气象情报，这对于保障海上航行安全、选择最佳天气航线等方面都具有重要意义。 现有的气象传真图使用模式中，由于人工干预过多，对图中信息进行判断时错误率较高。在航海智能化高速发展的今天，对传真图信息进行数字识别处理，使之与其它航海数据(电子海图)等资料相结合已成为必然。但目前广泛使用的气象传真接收机存在整机体积大、接收可靠性较低、精度不高等缺点，很难满足传真图识别、气象信息提取等工作的要求。本文进行了气象传真信号数字解调技术的研究，为实现高性能、小型化的气象传真数字接收机奠定一定的基础。 论文针对现有气象传真机在性能和集成度等方面存在的不足，提出了一种DSP+ARM的嵌入式全数字化无线气象传真接收机方案，对其中的数字解调模块的实现方案进行设计，并用通信仿真软件System View对整个数字解调过程进行仿真研究，得到了满意的结果，论证了方案的可行性。最后设计了基于DSP(TMS320C6713)的气象传真信号数字解调模块。更多还原

【Abstract】 Currently, most ships equipped with the meteorological facsimile receiver, receiving a great deal of useful ocean weather information, such as circumstance, weather forecast, alert and so on. It is very useful for guarantee the safety of sea sails, choosing the best line, etc.In existing mode of using meteorological facsimile image, because of too much artificial intervenes, the rate of mistake is higher. With the development of the navigation intelligentize, it has become inevitable that carrying on digital recognition of facsimile image information, and using it with other navigation data (electronic nautical chart). But the widely used meteorological facsimile receiver, the entire volume is big, the receive reliability is lower, the precision is not high, it is very difficult to satisfy the following recognition works. This article conducts the meteorological facsimile signal digital demodulation technology research; it establishes certain foundation for realizing the high performance, the microminiaturized meteorological facsimile digital receiver.This paper eyes on the insufficiency of the current facsimile machine, proposes an embedded all digitization wireless meteorological facsimile receiver plan based on DSP and ARM, and carries on the design to the implementation of digital demodulation technology. In the paper, it conducts the simulation research with correspondence simulation software SystemView to the entire digital demodulation process, obtained the satisfactory result, and proves the plan feasibility. Finally the dissertation uses DSP to carry on the implementation about the meteorological facsimile signal digital demodulation module.更多还原