Real-time algorithm for acoustic imaging with a microphone array.
Acoustic phased array has become an important testing tool in aeroacoustic research, where the conventional beamforming algorithm has been adopted as a classical processing technique. The computation however has to be performed off-line due to the expensive cost. An innovative algorithm with real-time capability is proposed in this work. The algorithm is similar to a classical observer in the time domain while extended for the array processing to the frequency domain. The observer-based algorithm is beneficial mainly for its capability of operating over sampling blocks recursively. The expensive experimental time can therefore be reduced extensively since any defect in a testing can be corrected instantaneously.
Huang
Xun
X
Department of Mechanical and Aerospace Engineering, College of Engineering, Peking University, Beijing, 100871, China. huangxun@pku.edu.cn