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公开(公告)号：US07555062B2
公开(公告)日：2009-06-30
申请号：US11220122
申请日：2005-09-06
CPC分类号： H03D9/06 , H03D2200/0082
摘要： A method and device for detecting the amplitude and/or the phase position of an intensity-modulated signal, including the following: detecting an instant value of the intensity-modulated signal and of a first reference signal with a frequency differing from the intensity-modulated signal; mixing the first reference signal with the intensity-modulated signal to obtain a mixed-signal value; detecting an instant value of a second reference signal with a frequency differing from both the previously detected signals and of a third reference signal of the same frequency but phase-shifted from the second reference signal; mixing the mixed-signal value with the second reference signal to yield a first measurement value; mixing the mixed-signal value with the third reference signal to yield a second measurement signal value; and calculating the amplitude and/or phase position from the two measurement signal values.
摘要翻译： 一种用于检测强度调制信号的幅度和/或相位位置的方法和装置，包括：检测强度调制信号的瞬时值和具有与强度调制信号不同的频率的第一参考信号 信号; 将第一参考信号与强度调制信号混合以获得混合信号值; 检测具有与先前检测到的信号不同的频率的第二参考信号的瞬时值，以及与第二参考信号相移但相同频率的第三参考信号; 将混合信号值与第二参考信号混合以产生第一测量值; 将混合信号值与第三参考信号混合以产生第二测量信号值; 以及从两个测量信号值计算幅度和/或相位位置。
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公开(公告)号：US20060056544A1
公开(公告)日：2006-03-16
申请号：US11220122
申请日：2005-09-06
IPC分类号： H04L27/22
CPC分类号： H03D9/06 , H03D2200/0082
摘要： The present invention relates to a method for detecting the amplitude and/or phase position of an at least partly intensity-modulated signal (PE(t)), and a corresponding device for carrying out the method. In order to provide a method and a device which make it possible to avoid the disadvantages of the start of the art, according to the invention a method and a device for carrying out the method are proposed, the method having the following steps: i) Detecting an instant value of the at least partly intensity-modulated signal (PE(t)), ii) Detecting an instant value of a first reference signal (Um(t)), the first reference signal (Um(t)) having a frequency (ω2) which differs from the frequency (ω1) of the intensity modulation, iii) Mixing the detected instant value of the at least partly intensity-modulated signal (PE(t)) with the detected instant value of the first reference signal (Um(t)) to obtain a mixed-signal value (UΔ), iv) Detecting an instant value of a second reference signal (U1(t)), the second reference signal (U1(t)) having a frequency (Δω) which also differs both from the frequency (ω2) of the first reference signal and from the frequency (ω1) of the intensity modulation, v) Detecting an instant value of a third reference signal (UQ(t)), the third reference signal having the same frequency (Δω) as the second reference signal, but being phase-shifted to the second reference signal (U1(t)), vi) Mixing the mixed-signal value (UΔ) with the detected instant value of the second reference signal (U1(t)) to obtain a first measurement signal value, vii) Mixing the mixed-signal value (UΔ) with the detected instant value of the third reference signal (UQ(t)) to obtain a second measurement signal value, and viii) Calculating the amplitude and/or phase position of the at least partly intensity-modulated signal (PE(t)) from the two measurement signal values.
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