The demodulation techniques for sagnac interferometer based hydrophone 干涉型水聽器的信號(hào)解調(diào)技術(shù)
Relative phase demodulation technique in frequency domain in projected grating phase method 雙頻投影柵線法的改進(jìn)
The research content of this dissertation is the modulation and demodulation technique of ds / dmpsk in software radio 本文的研究?jī)?nèi)容是軟件無線電臺(tái)中的ds/dmpsk調(diào)制解調(diào)技術(shù)。
Secondly, we discuss the application of if sampling and digital demodulation technique in pd weather radar signal processing system 其次,本文研究了中頻采樣及數(shù)字解調(diào)技術(shù)在氣象雷達(dá)中的應(yīng)用。
(3 ) an integrity demodulation system of fbg sensors was well designed . based on a f-p cavity driven by the voltage, a novel automatic trace demodulation technique was carried out (3)完整的研究設(shè)計(jì)了一套光纖光柵傳感器的解調(diào)系統(tǒng),適用于振動(dòng)(加速度)測(cè)量。
In this dissertation, we mainly focus on the research and realization of fiber bragg grating networks, including the principles and experiments of sensing and demodulation techniques 本論文主要以布喇格光纖光柵為研究對(duì)象,對(duì)其傳感技術(shù)、解調(diào)技術(shù)以及網(wǎng)絡(luò)技術(shù)進(jìn)行了理論和實(shí)驗(yàn)的研究。
In this dissertation, we mainly focus on the research and realization of fiber bragg grating networks, including the principles and experiments of sensing and demodulation techniques 本論文以光纖光柵為研究對(duì)象,對(duì)其傳感技術(shù)和解調(diào)技術(shù)進(jìn)行了探討,并著重分析研究了光纖光柵傳感的復(fù)用技術(shù)。
The research reveals that dds modulator made up of dds technique and micro-computer possesses many modulation capabilities and provides a new research way for modulation and demodulation technique 研究表明,將dds技術(shù)輔以微機(jī)構(gòu)成的dds調(diào)制器能將多種調(diào)制功能集于一身,為調(diào)制解調(diào)技術(shù)提供了一條新的研究途徑。
Most of today ’ s demodulation techniques rely on optical filtering method, such as bulk optical edge filters, scanning fiber fabry-perot filters, wdm fiber couplers, acousto-optic tunable filters and mach-zehnder filters 目前,以布喇格光纖光柵(fbg:fiberbragggrating)為傳感器件的傳感器已成為研發(fā)主流。
Then the resonance demodulation technique is used in analyzing the vibration signal of the gear and ball bearing . to some extent the results depend on the selected frequency band 這一方法的實(shí)現(xiàn)步驟是首先對(duì)測(cè)得的振動(dòng)信號(hào)進(jìn)行自相關(guān)分析,再對(duì)自相關(guān)函數(shù)進(jìn)行時(shí)延,然后對(duì)時(shí)延后的自相關(guān)函數(shù)進(jìn)行hilbert變換解調(diào)。