| 数字Costas锁相环的改进及应用 |
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| 引用本文： | 杨德勇,许林峰,樊丰,朱维乐.数字Costas锁相环的改进及应用[J].电视技术,2009,33(Z1). |
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| 作者姓名： | 杨德勇 许林峰 樊丰 朱维乐 |
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| 作者单位： | 电子科技大学,四川,成都,610054 |
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| 摘 要： | 介绍了Costas锁相环的基本原理,然后提出了一种适合电视信号色度副载波恢复的改进数字Costas锁相环的基本原理.并且详细介绍了其积分清零器、相位检测器、数字环路滤波器、NCO等各个基本部件的设计,最后在Matlab上给出了该算法的仿真结果并且做了分析.
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| 关 键 词： | Costas锁相环 积分清零器 色度副载波恢复 |
Improvement and Application of Digital Costas Phase-locked Loop |
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| YANG De-yong,XU Lin-feng,FAN Feng,ZHU Wei-le.Improvement and Application of Digital Costas Phase-locked Loop[J].Tv Engineering,2009,33(Z1). |
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| Authors: | YANG De-yong XU Lin-feng FAN Feng ZHU Wei-le |
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| Affiliation: | YANG De-yong,XU Lin-feng,FAN Feng,ZHU Wei-le(University of Electronic Science and Technology of China,Chengdu 610054,China) |
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| Abstract: | Firstly the basic principle of Costas phase-locked loop is briefly introduced.Then the basic principle of an improved digital Costas phase-locked loop which is suitable for color TV signal sub-carrier to resume is put forward.And designs of all its basic components which include clear-points,phase detector,digital loop filter and NCO are given.Finally,the algorithm simulation is given and analyzed. |
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| Keywords: | Costas phase-locked loop clear-points color subcarrier recovery decode |
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