COSTAS环在载波恢复中的研究
Research of Costas Loop in Carrier Recover
胡占廷 1孙启伟 2秦楠 1乔立华 3王建安 4张志峰4
作者信息
- 1. 国网河南省电力公司，河南 郑州 450000
- 2. 国网河南南阳供电公司，河南 南阳 473000
- 3. 国网河南信阳供电公司，河南 信阳 464000
- 4. 国网河南安阳供电公司，河南 安阳 455000
- 折叠
摘要
Costas环是通信系统中载波同步模块的关键技术之一，对Costas环在载波恢复中的应用进行了研究。文章基于Costas环的基本模型，分析了Costas环在载波恢复中工作的基本原理。然后对Costas环各组成部分的作用进行分析，并且对各部分在MATLAB仿真中的参数进行分析与设定。对Costas环在MATLAB仿真平台上进行建模仿真，得出了2阶和3阶环路Costas环的主要性能结果，最后用3阶环路Costas环解决2阶环路Costas环锁频范围窄的问题，其中为了提高鉴相精度，用反正切鉴相法取代传统的乘法鉴相法，以便于实现。
Abstract
Costas loop is one of the key technologies of carrier synchronization module in communication system. The application of Costas loop in carrier recovery was studied. First of all, based on the Costas basic mode, the basic principle of Costas loop in carrier recovery work was analyzed. Then the role of each component of Costas loop was analyzed, and the parameters of each part in the matlab simulation were analyzed and set up. The simulation of Costas loop on matlab simulation platform was carried out. The main performance results of the 2 and 3 order loop Costas loop were obtained. In the end, to solve the 2 order loop Costas loop locking range narrow end with 3 order loop Costas loop. In order to improve the precision of phase detection, arctangent phase detection method was used to replace the traditional multiplication phase detection for more easy realization.
关键词
Costas环/载波恢复/滤波器/压控振荡器/鉴相器/MATLABKey words
Costas loop/carrier recovery/iflter/VCO/PD/MATLAB引用本文复制引用
出版年
2016
NETL
NSTL
万方数据