宽带波束形成在定点DSP上的实现  

Implementation of braodband beamformer with fixed-point DSP

作　　者：丰平[1] 马晓川[1] 李璇[1] 陈模江[1] 刘大鹏[1] 

机构地区：[1]中国科学院声学研究所数字系统集成部,北京100190

出　　处：《声学技术》2010年第2期206-209,共4页Technical Acoustics

基　　金：国防科工委基础科研资助(A1320070067);国家自然科学基金资助(60802072)

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。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 developing signal processing algorithms on fixed-point DSP are briefly described and given out as references for future work.

关 键 词：常规波束形成 自适应稳健波束形成 定点矩阵分解 

分 类 号：TB556[理学—物理]