ACOUSTIC HOLOGRAPHY MEASURING METHOD USING TWO PLANE MEASUREMENTS

摘要

The invention of sound generated by underwater sound particularly relates to a underwater acoustic holography measurement method will in consideration of the acoustic characteristics of the sensors are arranged to detect on each plane are arranged on the two flat double underwater acoustic holography measurement method of predicting a sound pressure distribution. ; This is the configuration of the present invention for the water source and, the at least one sensor array, and amplifying means for amplifying the detection signal, and a multi-channel converter for converting an analog signal into a digital signal, the sound pressure distribution and prediction means for predicting the distribution of sound pressure, the sound pressure distribution in the operation prediction prediction means The sound pressure distribution in the acoustic holography system including a display for displaying, the sound pressure distribution prediction means is spread in the Z-axis in the positive direction of the direct wave is a wave number in the sound-absorbing acoustic sensor array generated by the underwater sound sources directly set as the wave number, and the propagating wave number set as the Z-axis in the negative direction of the Z-axis positive and negative directions of the wave number of the wave number in the Z-axis direction of the sensor array directly to the frequency of the reflected wave is the reflected wave component The combined space above is characterized in that for calculating the sound pressure distribution.