哈尔滨工程大学学报2009，Vol.30Issue(10)：1175-1179,1193,6.DOI:10.3969/j.issn.1006-7043.2009.10.017
宽带数字波束测向系统性能分析
Performance analysis of a wideband digital beamforming
杨晓冬 1张灵珠1
作者信息
- 1. 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001
- 折叠
摘要
Abstract
A new method for wideband digital beamforming (DBF) that can be applied in an electronic reconnaissance system was created. This new approach uses a simplified weight coefficient distribution method in the frequency domain based on spatial re-sampling. Compared with the conventional frequency domain method, the algorithm greatly reduces both the data sampling ratio and computation, and is easy to implement. An effective method for calculating target position was a prerequisite for the multi-beam amplitude-comparison direction finding system. For wideband signals which can bring about deflection of beam width and beam direction with changes in frequency, directly applying the multi-beam amplitude-comparison direction finding method generates larger errors. A computer simulation was run to analyze the relationships between directional accuracy, beamwidth and different channel gain-phase errors. As a result of this comparison, the simplified weight coefficient distribution method was proven practical.关键词
宽带/波束形成/多波束比幅测向/测向精度Key words
wideband/ beamforming/ multi-beam amplitude-comparison direction finding/ direction accuracy分类
信息技术与安全科学引用本文复制引用
杨晓冬,张灵珠..宽带数字波束测向系统性能分析[J].哈尔滨工程大学学报,2009,30(10):1175-1179,1193,6.
