Design of Wide-Band Array with Frequency Invariant Beam Pattern by Using Adaptive Synthesis Method
Based on adaptive technique, a method for designing wide-band array with frequency invariant beam pattern is presented in this paper. For a given beam pattern, the entire design process can be completed automatically by a computer without deriving expressions of weight vector. The design process is divided into three steps: design the beamformer by numerical method at reference frequency and obtain the weight coefficient; within the operation frequency range, design the beamformer by adaptive simulation technique at other frequency points and obtain the weight coefficient under which the beam pattern is the same with the desired beam pattern; design FIR filter and evaluate the filter coefficient for a FIR filter frequency response specified by the weight coefficient of each channel. The proposed method can be applied to an arbitrary array and have no restriction on sensor patterns. This method is valuable in practical engineering.
frequency invariant beam pattern beamforming wide-band array adaptive simulation
Weijie Zhu Wei Wu
Dept. of Communication Engineering, Engineering College of Armed Police Force, Xi an, China
国际会议
武汉
英文
688-693
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）