【作者】 高军；

【导师】 李志华；

【作者基本信息】 大连海事大学 ， 交通信息工程及控制， 2005， 硕士

【摘要】 雷达模拟器在海员培训和适任评估中起着重要的作用。随着航海事业的发展,用户对雷达模拟器的要求越来越高,《STCW 78/95公约》也对雷达/ARPA模拟器提出了明确的要求。 在配备真实雷达显示器设备的雷达模拟器中,雷达信号发生器是其核心部件,它实时生成模拟雷达信号包括雷达视频信号、触发信号以及方位信号等,送到真雷达显示单元显示,实现具有真实雷达操作感,又具有模拟的海域环境,达到雷达模拟器的最终使用目的。 通过对雷达的系统分析,提出了基于PCI总线的雷达信号发生器的设计方案。它以TMS320VC5402芯片最小系统为核心,加上与真雷达显示单元接口电路以及PCI2040桥芯片相关电路,形成了一个相对独立的雷达信号发生器。它通过PCI总线与PC机实现通信,把由PC机计算得到的模拟雷达数据实时生成雷达视频信号,送到真雷达显示单元显示。它改变了以往采用位图形式查表实时生成雷达视频信号算法的缺点,采用了从矢量化的海图数据中通过直线求交的算法实时生成雷达视频信号,这样在真雷达显示单元上显示的图像更加逼真,特别是在近量程,能真正提高雷达距离分辨力,不会出现马赛克现象,而且对于模拟诸如海浪抑制、雨雪干扰等效果更为方便。更多还原

【Abstract】 Radar simulator takes the important role in seafarer training, assessment of competence, etc. Radar simulator has been demanded higher performances along with rapid development of marine industry. And the explicit standards are clearly defined by STCW 78/95 Convention.Radar signal generator is the kernel part in the radar simulator with true radar display. It real-time generates simulative radar video, trigger, azimuth signal and so on, which display on the true radar screen. Sailor can operate the true radar in simulative sea area environment.After analyzing the radar system, this treatise brings forward base on PCI bus radar signal generator. It is composed of the TMS320VC5402 system and the interface with true radar display and the correlative circuit with PCI2040 chip. It is a comparatively independent radar signal generator system. Communicating with PC based on PCI bus, it can real-time generate radar video signal which display on real radar screen. It adopts the special arithmetic that generates a point by intersecting of two beelines. There isn’ t defect such as generating the radar video by table look-at bitmap. The radar image is more verisimilitude, and it is better to simulate sea echo suppression, anti clutter rain, etc.更多还原