海事雷达视频信号模拟器硬件前端设计  

Hardware design of marine radar video signal simulator

作　　者：郝伟[1] 李燕青[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《电子测量技术》2012年第1期104-107,共4页Electronic Measurement Technology

摘　　要：基于通用串行总线技术,结合CPLD与高速DAC,针对海事雷达视频信号的特点对雷达视频信号模拟器进行了研究和设计。海事雷达视频信号的采集处理是电子海图技术的重要组成部分,但是直接从雷达前端获取该信号较为困难,不便于在实验室进行研究分析。采用模拟器生成的信号具有成本低,灵活性高的特点,并且可以较好地拟合原信号,方便该信号的采集处理的研究。本文介绍了硬件系统的架构与工作流程,并对DAC输出级驱动电路进行了详细描述,最后对模拟器生成的信号进行了实验和验证。By USB technology, and combined with CPLD and high-speed DAC, the radar video signal simulator is studied and designed based on the characteristic of marine radar video signal. The collection of marine radar video signal is the very important part of ECDIS. It＇s difficult to get the signal from the radar front-end. The simulator has the features of low cost and high flexibility. It can fit the original signal, which is useful for acquisition and processing. The structure of the simulator and its work flow are introduced, and a particular description on the driven circuit of the DAC is given, and test of the simulator is proposed.

关 键 词：雷达视频信号 复杂可编程逻辑器件 数模转换 输出驱动 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]