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Ultrasonic transmitting and receiving apparatus, ultrasonic transmission and reception method, and the ultrasonic transmitting and receiving program
Ultrasonic transmitting and receiving apparatus, ultrasonic transmission and reception method, and the ultrasonic transmitting and receiving program
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机译:超声波收发装置,超声波收发方法以及超声波收发程序
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摘要
PROBLEM TO BE SOLVED: To improve updating speed of an echo image in comparison to prior art while causing practically none deterioration in reliability of additional information.;SOLUTION: In an n-th transmitting and receiving group, a first and second ultrasonic signals FM(H)Tx are transmitted and a first and second echo data items FM(H)Rx and FM(L)Rx are obtained, thereupon a third ultrasonic signal CW(H)Tx is transmitted and a third echo data item CW(H) is obtained. In an n+1-th transmitting and receiving group, a first and second ultrasonic signals FM(H)Tx are transmitted and a first and second echo data items FM(H)Rx and FM(L)Rx are obtained, thereupon a fourth ultrasonic signal CW(L)Rx is transmitted and a fourth echo data item CW(L)Rx is obtained. A high frequency echo image and a low frequency echo image are updated every time from the first and second echo data items FM(H)Rx and FM(L)Rx. The third echo data item CW(H)Rx of the n-th time and the fourth echo data item CW(L)Rx of the n+1-th time are combined to be utilized for bottom sediment determination.;COPYRIGHT: (C)2014,JPO&INPIT
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