This system can imitate the echo signal and get rid of it without interfering with the received information.
该技术精确地模仿回波信号，然后有效地抑制回波，而又不对接收信号形成干扰。
参考来源 - ISDNOne of the difficulties of ultrasonic signal detection is the detection of the echo signal in the ultrasonic signal.
超声波检测的难点之一是对所采集超声波信号中的回波信号的检测。
参考来源 - 基于小波时间熵的超声波信号检测研究与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
The geometry, the distance history and echo signal models of airborne bistatic SAR are built firstly.
首先建立了机载双基地SAR的几何模型、距离历程和回波模型。
Radar target simulator is used to generate radar echo signal comprised of target and radar environment.
雷达目标模拟器是用于产生包含目标以及雷达环境信息的雷达回波信号。
A portion of the waves is there reflected from the object encountered and forms what is referred to as the echo signal.
一部分波从所遇到的物体反射回来，形成一种信号，称为回波信号。
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