PURPOSE: To prevent the contents of information reproduced from a frequency- modulated signal from being influenced by the variation of carrier frequency by supplying the reference level of a demodulated signal to a setting device for controlling the amplitude of a demodulation signal. CONSTITUTION: A...
phase modulated signal 调相信号 相似单词 modulated 已调整[制] 的 signal n. 1.(传递信息、命令等的)信号,手势,声音,暗号 2.(给人警告、信息等的)信号器或信号物 3.触发某些普遍活动的事情或行动;表明某事物存在或可能发生的任何事物 4.(电子脉冲或无线电 Signal n. 信号,暗号,近因,导火线,动机,预兆...
frequency modulated fuze 调频引信 frequency modulated generator 调频振荡器 相似单词 modulated 已调整[制] 的 signal n. 1.(传递信息、命令等的)信号,手势,声音,暗号 2.(给人警告、信息等的)信号器或信号物 3.触发某些普遍活动的事情或行动;表明某事物存在或可能发生的任何事物 4.(电子脉冲或无线电 ...
message (i.e., modulating) signal is used to modify (i.e., modulate) some parameter (e.g., amplitude, frequency, phase) of a periodic (such as a high-frequency sinusoidal) signal known as a carrier wave, individually or in combination, to produce the modulated signal for transmission. ...
For frequency modulation, the frequency f (or angular frequency ω) of the modulated signal linearly varies with the amplitude of the modulating signal s(t). ω=ωp+2kπ.st The expression of the frequency-modulated (FM) signal is given by: vFMt=V0.cosθ1 with: θ1=∫0tωt.dt=∫0...
The proximity probe has a transmission branch, which generates and transmits a frequency modulated transmission signal (200). A switch signal connects and disconnects a functional unit of the transmission branch. The frequency of the switch signal is higher than a maximum frequency of the target ...
the frequency spectrum of the probe transmission shows that we can obtain the frequency differential signal from the probe transmission spectrum. This represents an application of our atoms to reduce the modulated signal frequency (from terahertz to kilohertz magnitude), which allows the signal to be...
We also find a large DC signal in the spectra, which is originated from the carrier signal reflected from the unmodulated columns. Here we note that the high-order harmonic magnitudes are close to that of the fundamental harmonic, owing to the spatial multipath and shading effects when the ...
Of course, a bird sings many notes throughout the song, so we’d also like to knowwheneach note occurs. The Fourier transform takes a signal in the time domain (i.e., a set of measurements over time) and turns it into a spectrum—a set of frequencies with corresponding (complex2) ...
We apply the IF algorithm on the non-stationary frequency modulated signal(37)f(x)=4(x−0.5)2+(2(x−0.5)2+0.2)sin((20π+0.2cos(40πx))x),x∈[0,1] From Fig. 7, we see that the IF method decompose f(x) into two components. The first is the frequency modulated ...