首页 | 本学科首页   官方微博 | 高级检索  
     

基于DSP Builder多相滤波器组的实现
引用本文:董亮,汪敏,许春,施硕彪.基于DSP Builder多相滤波器组的实现[J].电子测量技术,2009,32(12):80-84.
作者姓名:董亮  汪敏  许春  施硕彪
作者单位:中国科学院云南天文台,昆明,650011
摘    要:在详细分析了多相滤波器组原理和实现方法后,通过在DSPBuilder下调用FIRIPCore(FiniteImpulseResponseIntellectualPropertyCore,有限冲击响应滤波器知识产权核)构建了一个多相滤波器组,实现了对输入信号的抽取式下变频的同时减低了等效采样带宽,进而使FFT(FastFourierTransformation,快速傅里叶变换)的处理带宽减低,在同等变换N点数的情况下有效地提高FFT通道的利用率和谱分辨率,提高倍数取决于抽取因子M,该设计能广泛使用在射电天文的谱线信号的精细分析同时也提高了处理器速度和性能。

关 键 词:多相滤波器  FIR  IP  Core  高效谱分析射电天文谱线信号

Polyphase filters bank's achieving based on DSP Builder
Dong Liang,Wang Min,Xu Chun,Shi Shuobiao.Polyphase filters bank's achieving based on DSP Builder[J].Electronic Measurement Technology,2009,32(12):80-84.
Authors:Dong Liang  Wang Min  Xu Chun  Shi Shuobiao
Affiliation:Dong I.iang Wang Min Xu Chun Shi Shuobiao (YunNan Observatory of Chinese Academy Kunming 650011)
Abstract:Analyzed the polyphase filters bank's theory and achieving method and then we founded a polyphase filters bank by calling FIR IP(Finite Impulse Response Intellectual Property ) core based on DSP Builder. It achieved down sampling down-frequency and improved the utilization rate of FFT (Fast Fourier Transformation)by improving frequency resolution at the same N points. This design can be widely used to subtle line spectrum analysis in radio astronomy in the same time it can improve the processor's performance and processing speed.
Keywords:FIR IP Core
本文献已被 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号