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움직이는 물체의 거리 및 속도 측정을 위한 고전력 쏘나 시스템 개발
장순석,안홍구,이제형 조선대학교 에너지.자원신기술연구소 1999 에너지·자원신기술연구소 논문지 Vol.21 No.2
This paper aims for the development of the high power sonar system for measuring the distance and the velocity of a moving object. The high power sonar system transmits two gated 190 KHz sinusoidal signals with 1.6〔ms〕 time interval to the moving object. Then the sonar system detects and calculates the changed time delay of the reflected ultrasonic signals in order to derive the velocity of the moving object. The transmission part uses a high power amplifier so that 250W gated sinusoidal signals can be transmitted to the transmitter. 1M RAM is utilized for transmitting and storing of the ultrasonic signals. The time delay is calculated by the cross-correlation technique between the transmitted signals and the received signals. The measured value from the high power sonar system is compared with directly measured values by photo diodes. The result confirms the adjacency to 0.3% error.