摘要
以舷侧阵作为研究对象,首先介绍了常规波束形成器(CBF)和最佳波束形成器(OBF)的波束输出信号模型,然后推导了信号+噪声场合下的阵增益表达式,比较了在不同信号频率和不同信号源方向角下,CBF和OBF的阵增益,最后在增加了有指向性的CW干扰后,分析了此场合下的阵增益,并比较了不同的信号频率下,干扰源方向角的变化对两类波束形成器阵增益的影响。
The beam output signal models of conventional beamformer （CBF） and optimum beamformer （OBF） are introduced. The formulation of array gain is deduced in the case of signal plus noise. The array gains of CBF and OBF are compared at different signal frequency bands and different source azimuth angles. Finally, the CW interference is added to the flank array to analyze the array gain. The influences of two kinds of beamfomers on the array gains are compared when the interference azimuth is changing at different signal frequencies.
出处
《海洋技术》
北大核心
2011年第3期64-67,共4页
Ocean Technology
基金
江苏省南京理工大学紫金之星基金资助项目(0907901-50)
关键词
常规波束形成
最佳波束形成
阵增益
舷侧阵
conventional beamformer
optimum beamformer
array gain
flank array
