Detection of surface-breaking cracks has been realized by signal processing method using the reference signal from a surface without flaws. The principle and experimental results are given.
本文以无缺陷时的表面回波为参考信号，用信号处理方法，识别表面缺陷回波，从而实现对表面缺陷的检测。文中给出了该方法的原理及实验结果。
This paper describes a method of suppressing correlation jamming at the frequency of reference signal which cannot be suppressed by lock-in amplifier and Boxcar integrator.
锁定放大器和取样积分器都不能抑制与参考信号同频率的干扰。本文提出了一种能抑制这种干扰的方法。
Using the optical chopper to modulate the detected light to make it related to the reference squarewave signal is a common method of locking phase detection of weak signals.
其中利用光学斩光器对被测光进行调制使其与方波参考信号相关是对微弱光信号进行锁相检测的一种常用方法。
We present a method for preserving time-invariant phase relationships, through introduce a third signal as a reference, when ratios are taken between two complex signals that are harmonically related.
本文阐述了在任意两个复信号谐波相关情况下，通过引入第三个复信号作为参考，使得在计算复信号比值时能保持时不变相位的计算方法。
In this method, the feedforward signal is obtained through establishing a reference model, so that the defect of traditional method can be avoided.
此方案以建立一个参考模型来得到前馈信号，从而避免了传统方案的缺点。
The book introduced the integrated services agreement with the signal transmission, the method of transmission media, reference topology considerations and voice quality tests.
本书综合介绍在服务提供方面的协议信号传输、媒体传输方法、参考拓扑考虑因素和语音质量测试。
The photoelectric sensor is selected as reference signal obtained from intelligent dynamic balance instrument. The method is successfully used in intelligent overall dynamic balance instrument.
在比较分析的基础上介绍了选择光电传感器法作为智能动平衡仪获得基准信号的方案，并将此方案成功应用于智能化整机动平衡仪中。
This method does not use the time variable as reference but is based on the amplitude of the signal. It can get the multirate sampling for complex signals.
不以时间作为采样的基准，而以信号的幅度作为采样的基准，实现了对包含多种频率成分的复杂信号的多采样率。
This method does not use the time variable as reference but is based on the amplitude of the signal. It can get the multirate sampling for complex signals.
不以时间作为采样的基准，而以信号的幅度作为采样的基准，实现了对包含多种频率成分的复杂信号的多采样率。
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