| 一种软件科斯塔斯环的模型建立与实现 |
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| 作者姓名： | 尚耀波 郭英 |
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| 作者单位： | 空军工程大学电讯工程学院,西安710077 |
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| 摘 要： | 文章通过双线性变换法建立了科斯塔斯环的Z域模型，分析了Z域模型下环路各项性能指标和环路参数之间的关系，系统总结了设计步骤和参数的选择方法。试验仿真结果证明捕获与跟踪性能符合理论分析。最后给出了科斯塔斯环在FPGA中的硬件实现结构。
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| 关 键 词： | 科斯塔斯环 软件无线电 环路滤波器 捕获特性 |
Model and Realization of a Software Costas Loop |
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| Authors: | Shang Yaobo Guo Ying |
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| Institution: | Shang Yaobo Guo Ying (The Telecommunication Engineering Institute, Air Force Engineering University, Xi＇an 710077, China) |
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| Abstract: | The Z-domain model of costas loop is established based on the bilinear transformation method and the relationships between performance of costas loop and inherent parameters are analyzed. Principles for parameters choice and the design procedure are summarized. Results of Acquiring and Tracking simulation agree well with theoretical analysis. Finally, the FPGA realization of the costas loop is presented. |
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| Keywords: | Costas loop Software defined radio Loop filter Acquisition characteristic |
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