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- faint echo signals 弱信号
- The hills sent back a faint echo. 座座山丘传来微弱的回声。
- Michael Feroli of JPMorgan Chase proposes outright purchases of mortgage-backed securities-another faint echo of Japan. 另一种说法是，市场上几乎没啥成交量，使得实际利率难以估算。
- Andy doesn't seem to mind. His arms sweep to the music still playing in his head. We hear a FAINT ECHO of the soaring duet. 安迪似乎并不在意,还在指挥着盘旋在脑海中的音乐。可以听到微弱的响起那激扬的二重唱。
- In a PPI, the radar echo signals are shown in plan for with the range and azimuth angle displayed as polar coordinates. 在生产者价格指数，雷达回波信号显示与范围和方位角的极坐标显示在计划。
- The complex scene is simulated,based on the non-correlation of multi-kinds of radar echo signals. 利用各种雷达回波信号之间的不相关性,实现了复杂场景的数字仿真。
- Target echo signals are the main information source in underwater acoustic detection system. 目标回波信号是水声探测系统主要的信息来源。
- The characteristic values of measured echo signals are extracted by this method and evaluated by the separability criterion. 进而采用基于距离的类别可分性判据对提取结果进行了评价。
- In this paper, a method of feature extraction of ultrasonic flaw echo signals is introduced, which is based on the theory of multilevel wavelet packet transform. 文章介绍了一种基于小波包变换的多尺度空间能量特征提取方法，并对实测的超声缺陷回波信号进行了特征提取；
- It can also simulate the speed about distance changing and adjust the pulse width of echo signal. 此外，本目标回波距离处理器还可以仿真距离变化速率，调节回波脉冲的宽度。
- SPGA algorithm compensates the envelope and phase of the echo signal which has not be corrected range migration. SPGA算法利用估计得到的侧摆对距离徙动校正前的回波数据进行包络和相位补偿。
- Describes a distance simulator of echo signal used in radio frequency simulation system. 描述了射频仿真系统中使用的目标回波距离处理器。
- By interaction between ultrasonic waves and elastic medium, it has carried much information of material, which are received in the form of ultrasonic echo signals. 它是利用超声换能器的振动产生的超声波与弹性介质相互作用,从而携带大量有关材料性能的信息,这种信息以超声回波信号的形式被接收到。
- He could hear the faint echoes of voices far above him on the mountainside, startling him after great silence. 他能够听到从远处高山上传来的说话声的微弱回音,这使他感到惊讶。
- The duplexer acts as a very broad band pass filter during receiving mode and the prearnp is a low noise wide band-width amplifer that is used to amplify the echo signals. 调谐电路对系统共振频率的漂移进行实时调谐,针对以上天线和模拟电路的功能,对天线和模拟电路进行了设计。
- Objective To analyze the echo signals in bioradar and to recognize the amount of human bodies by using the method of recurrence quantification analysis(RQA). 方法采用超宽谱生物雷达对位于砖墙后的生物体进行探测,采集雷达回波信号,运用重现量化分析方法对回波信号进行分析。
- Because the truths of the echo signal simulation are directly influenced by the accuracy of the simulation algorithms. 模拟算法的优劣直接影响着模拟产生的回波信号的真实性。
- Radio frequency simulation system(RFSS) is mainly used to simulate echo signal of radio frequency target in laboratory. 射频仿真系统(RFSS)主要是用在实验室里模拟空中射频目标信号。
- A way to measuring the vector miss distance using echo signal from Multiple Frequency CW-Tracking Radar is described in this paper. 本文详细介绍了利用多频连续波测量雷达回波信号进行脱靶量测量的方法。
- Miss distance parameters are estimated by matching pursuit algorithm to search the basis function which best matches the echo signal. 通过匹配追踪算法寻找与回波信号最匹配的基函数来确定脱靶量参数。
