| 基于TMS320C5416的CZT鉴频系统的实现 |
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| 引用本文： | 郑康煌,程恩,郑旭琴.基于TMS320C5416的CZT鉴频系统的实现[J].厦门大学学报(自然科学版),2006,45(4):496-499. |
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| 作者姓名： | 郑康煌 程恩 郑旭琴 |
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| 作者单位： | 厦门大学通信工程系,福建,厦门,361005 |
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| 基金项目： | 福建省自然科学基金，厦门大学校科研和校改项目 |
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| 摘 要： | 为了满足水声跳频通信对鉴频系统分辨率的要求,本文提出了利用线性调频变换的方法进行频谱分析,给出了基于TMS320C5416芯片线性调频变换(CZT)快速实现的硬件和软件解决方案,并对工程实现中遇到的几个具体问题进行了详细说明.研究表明,该系统满足水声跳频通信对鉴频速度和分辨率的要求,并已应用于水下E-mail传输系统中.
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| 关 键 词： | 线形调频变换 数字信号处理 水声通信 |
| 文章编号： | 0438-0479(2006)04-0496-04 |
| 收稿时间： | 11 16 2005 12:00AM |
| 修稿时间： | 2005年11月16 |
Development of CZT Demodulation System Based on TMS320C5416 Chip |
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| ZHENG Kang-huang,CHENG En,ZHENG Xu-qin.Development of CZT Demodulation System Based on TMS320C5416 Chip[J].Journal of Xiamen University(Natural Science),2006,45(4):496-499. |
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| Authors: | ZHENG Kang-huang CHENG En ZHENG Xu-qin |
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| Institution: | Dept. of Communication Engineering, Xiamen Unversity, Xiamen 361005, China |
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| Abstract: | Underwater acoustic(UWA) channel is a random time-varying and frequency-varying channel.Frequency hopping(FH) technology is a simple and efficient way to solve the problem of inter-symbol interference(ISI) caused by the multipath.But underwater acoustic frequency hopping communication requires high resolution of frequency demodulation.In order to meet this requirement,the present article discusses Chirp-Z transformation method.The arithmetic of Chirp-Z transformation as well as the hardware and software implementation is illustrated in the paper.The system consists of TMS320C5416 digital signal processor,PCM3002 A/D converter and extended output circuit.Because the traditional executing flow is not efficient enough,four optimizing methods are illustrated.As a result,this system can meet the speed and resolution requirement of underwater frequency hopping communication.It is also applied to underwater E-mail transportation project. |
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| Keywords: | TMS320C5416 |
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