摘要
波束置零能有效地抑制强干扰,因而成为数字波束形成(DBF)中的一项重要技术,然而由于通道误差等的存在使得零陷深度受到限制。首先提出了一种带零陷DBF的权值求解方法,然后从误差模型出发,分析了误差对零陷深度的定量影响,讨论了波束置零对旁瓣电平和比幅曲线的影响。最后通过数值方法验证了该数学分析的正确性。
Null steering is an important technology of digital beamforming（ DBF） due to its high level ability to suppress the interference. However,because of the existence of errors,the null can only reach a restricted level. A DBF method with null is proposed,and then the error model between the error level and the null level is established. To apply this method to direction finding,the error of sidelobe levels and the curve of amplitude- comprised are analyzed. Finally,the analysis is demonstrated with examples.
出处
《电子信息对抗技术》
2016年第3期64-67,共4页
Electronic Information Warfare Technology
关键词
数字波束形成
通道误差
波束置零
digital beam-forming
channel errors
null steering
