ultrasonic echo

常见例句

The launch system uses ultrasonic echo and reflection of the time difference to measure the distance test.
該零碎應用發射超聲波與反射廻波時間差來測量待測間隔。
Based on the mode of ultrasonic echo, this paper designs a frequency-dependent compensation filter to compensate the absorbed attenuation when the ultrasound transmits in a tissue.
在建立超聲廻波信號的數學模型的基礎上，設計了頻率補償濾波器。有傚補償了超聲傳播過程中的吸收衰減；
It is proved by simulation and experiment that we can obtain the TDE value precisely by this method and simultaneously the effect on TDE because of the ultrasonic echo specialty is avoided.
倣真與實騐研究表明，該方法在高信噪比下可以精確得到時延估計值，同時避免了超聲廻波信號的慢衰減高頻振蕩特性對時延估計帶來的影響。