反響定位の工学的モデル(<小特集>自然界に学ぶアルゴリズム)

概要

論文の詳細を見る
A computational model of bionic sonar is proposed for some species of bats that emit only frequency modulated (FM) sounds. From an engineering point of view, this study assumes that the FM bats could detect phase information of their high-frequency sounds to perceive the range and speed of moving objects. Since the phase information contained in echo waveforms is an important clue to the perception of speed, a mock architecture is designed in this study so as to simulate a coherent correlation receiver. On the basis of the frequency-tuned mechanism in the bats'auditory periphery, this architecture comprises a bank of constant-Q filters uniformly distributed along the log-frequency axis. Numerical experiments show that an equivalent function to the correlation receiver is realized and the range and speed of a simulated object can be measured precisely by the proposed model.
日本シミュレーション学会の論文
1993-03-15