| 摘要 |
The present invention relates to a recording medium where an analysis program of an acoustic detection signal measured in a sonar is stored, and a method for analyzing the acoustic detection signal. The method for analyzing the acoustic detection signal according to the present invention includes the steps of: (a) receiving an input of a GRAM image of the acoustic detection signal; (b) generating a Doppler cursor in a diagonal line shape corresponding to an inflection area showing the Doppler effect at a dominant frequency of the GRAM image; and (c) calculating a speed of an underwater object from x-axis and y-axis information of the Doppler cursor. According to the present invention, the method has the advantage of being able to identify the underwater object whose speed and direction changes from a frequency pattern displayed in the GRAM image through the Doppler cursor and a Doppler harmonic cursor, and to simply calculate the speed of the underwater object from the information of the Doppler cursor. |
