|
|
|
| 论文题目 |
宽带波束形成器的设计与实现 |
| 论文题目（英文） |
Designs and implementations of broadband beamformers |
| 作者 |
鄢社锋 |
| 发表年度 |
2008 |
| 卷 |
33 |
| 期 |
4 |
| 页码 |
316-326 |
| 期刊名称 |
声学学报 |
| 摘要 |
综述了宽带波束形成器的设计与实现问题，归纳出一种统一的窄带(子带)波束优化设计方法——多约束优化设计法，并推广为FIR宽带波束形成器统一优化设计法。阐述了频域DFT宽带波束形成器结构及其子带波束加权向量设计方法，以及时域FIR宽带波束形成器结构及其各通道FIR滤波器的设计方法，对几种具有代表性的方法的原理与性能进行了分析与比较。所归纳出的统一设计法将很多现有的波束设计法纳入统一框架体系，使之成为它的-个特例，可以满足多样化频域子带与时域宽带波束形成器设计的需求，提供灵活的波束设计准则，且设计精度高。子带与FIR宽带多约束统一设计法的优越性能在稳健旁瓣控制恒定主瓣响应自适应波束形成器设计问题中得到了充分的体现。
PACS数： 43．60 |
| 摘要_英文 |
Designs and implementations of broadband beamformers are revie、№d and discued．Broadband beamforning includes Discrete Fburier，nansform(DFT)implementation of aequency-domain beamformer and Finite Impulse Repoe(FIR)implementation of a time—domain beamformer．The designs of weights at each frequency bin for the DFT beamformer and that of FIR filters aLssociated with each sensor for the FIR beamformer are introduced．Performance analysis and comparisons of several typical approaches to them are presented．A unified approach，i．e．，multiple—coIlstrained aproach，to narrow_band beamformer is provided and is extended to the FIR implementation of broadband caLse．The unied approaches include the existing individual approacheas their special cases，which leads to much more exible desigILs． Design examples of broadband robust adaptive beamformer with constant mainlobe respoe and controlled
sidelobeafe given to illustrate the behavior． |
|
|
|
