
adj. [电子] 无畸变的;不失真的;无失真
The zero-input responses of distortionless lines are analyzed and the analytical expressions are got.
分析了无畸变线的零输入响应,导出了其响应的解析式。
An algorithm of broadband minimum variance distortionless response (MVDR) based on the frequency energy normalization was proposed.
给出了一种基于频段能量归一化处理的宽带最小方差无失真响应算法。
Extended minimum variance distortionless response (EMVDR) method is also proposed by introducing dummy signals for constraining side lobes based upon GMVDR method.
在GMVDR方法的基础上引入虚拟信号来进一步抑制旁瓣得到扩展最小方差无失真响应(EMVDR)波束形成方法。
The problem of impedance matching must be considered in order to transmit the signal of generator to the load efficiently and distortionless by transmission lines.
为了使传输线能够将信号源的信号高效不失真地传送到负载,需要考虑阻抗匹配问题。
This method not only can achieve the distortionless envelope detection of voltage flicker, but also can detect the time, frequency and amplitude of the signal accurately.
该方法不仅能够对电压闪变信号进行不失真地包络检波,而且能够精确地检测电压闪变信号的时间和包络信号的频率分量及其幅度。
adj.|orthoscopic/undistorted;[电子]无畸变的;不失真的;无失真
distortionless(无失真)是电子工程、信号处理和通信领域的关键术语,指信号在传输或处理过程中保持原始波形特征不变的能力。其核心要求是系统输出信号与输入信号相比,仅存在固定的幅度缩放和固定的时间延迟,而不产生任何波形畸变。具体表现为:
时域特性
输出信号 ( y(t) ) 与输入信号 ( x(t) ) 需满足关系:
$$
y(t) = K cdot x(t - tau)
$$
其中 ( K ) 为恒定增益(幅度缩放系数),( tau ) 为固定时延。这意味着信号各频率分量在时域上保持同步,无相位扭曲或幅度非线性变化。
频域特性
无失真系统的频率响应需满足:
此条件确保信号所有频率分量以相同比例放大/衰减,且通过系统的时间一致,避免因相位差导致的波形失真。
应用场景
无失真传输是通信系统(如音频设备、射频电路)、测量仪器(示波器探头)及图像处理的核心目标。例如:
权威参考:
“Distortionless”是由“distortion”(失真/畸变)加后缀“-less”(无)构成的形容词,表示“无失真的、无畸变的”。以下是详细解释:
如需进一步了解专业用法(如电路设计或通信协议),可参考通信工程或信号处理领域的文献。
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