基于Bessel插值的数字正交相干检波器镜频抑制
Rejection of Mirror Frequency in Digital Quadrature Coherent Detector via Bessel Interpolation
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摘要: 该文叙述了两种插值方法实现数字正交相干检波的基本原理,分析了信号流程,重点讨论和比较了两种方法的镜频抑制效果并做了相应仿真,理论分析和仿真结果对于数字正交相干检波的工程实现有一定参考价值。
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关键词:
- 数字正交相干检波; 插值法; 镜频抑制
Abstract: Basic principals of digital quadrature coherent detection are described in this paper via interpolation method. Two implementations are presented, and the signal flow is analysed. The rejection effects to mirror frequencies are discussed and compared emphatically between the two implementations. Computer simulation is carried out. Both the theoretical analysis and simulation results make a good reference to engineering application. -
杨小牛,楼才义,许建良.软件无线电原理与应用.北京:电子工业出版社,2001年1月第1版,第一、二、四章.[2]孙晓兵,保铮.中频信号采样与正交相干检波.系统工程与电子技术,1993,15(5):1-9.[3]杨平,耿富录.正交采样的理论和技术实现.火控雷达技术,1992,(1):25-30.[4]胡广书.数字信号处理-理论、算法与实现.北京:清华大学出版社,1997年8月第1版,第九章.[5]Sinsky A L, Pwang P C. Error analysis of a quadrature coherent detector processor. IEEE Trans.on AES, 1974, AES-10(6): 880-883. -
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