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宽带波束形成在定点DSP上的实现
引用本文:丰平,马晓川,李璇,陈模江,刘大鹏. 宽带波束形成在定点DSP上的实现[J]. 声学技术, 2010, 29(2): 206-209. DOI: 10.3969/j.issn1000-3630.2010.02.019
作者姓名:丰平  马晓川  李璇  陈模江  刘大鹏
作者单位:中国科学院声学研究所数字系统集成部,北京,100190
基金项目:国防科工委基础科研资助,国家自然科学基金 
摘    要:阐述了宽带波束形成算法在定点DSP上实现时需要考虑的问题,讨论了定点方式实现矩阵特征值分解和非线性运算。比较了宽带常规波束形成(CBF)和宽带稳健自适应波束形成(RCB)算法的定点和浮点实现结果,给出了快速实现和验证定点数字信号处理算法的方法和步骤。通过计算实际数据验证了这些方法的正确性,可以有效提高在定点DSP上开发复杂数字信号处理算法的效率。

关 键 词:常规波束形成  自适应稳健波束形成  定点矩阵分解
收稿时间:2008-12-05
修稿时间:2009-03-25

Implementation of braodband beamformer with fixed-point DSP
FENG Ping,MA Xiao-chuan,LI Xuan,CHEN Mo-jiang and LIU Da-peng. Implementation of braodband beamformer with fixed-point DSP[J]. Technical Acoustics, 2010, 29(2): 206-209. DOI: 10.3969/j.issn1000-3630.2010.02.019
Authors:FENG Ping  MA Xiao-chuan  LI Xuan  CHEN Mo-jiang  LIU Da-peng
Affiliation:FENG Ping,MA Xiao-chuan,LI Xuan,CHEN Mo-jiang,LIU Da-peng(Integrated Digital System Laboratory,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China)
Abstract:Problems about implementing beamforming on fixed-point DSP, such as eigenvalue-decomposition of matrix and non-linear calculation, are discussed and solutions to these problems are given out in this paper.Two methods, conventional beamforming(CBF) and robust Capon beamforming(RCB) implemented with floating-point and fixed-point are compared.Performance of using Jacobi method to calculate the eigenvalue-decomposition of Hemritten matrix with floating-point and fixed-point are compared.Steps to quickly develo...
Keywords:conventional beamforming  adaptive robust beamforming  matrix decomposition in fixed-point  
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