D - demodulate 中文

demodulate vt.【無線電】解調；檢波。

demodulation
( 4 ) a method , realizing the fast frequency measurement for dual sinusoidal signals basing on dft and autocorrelation theory , is proposed . firstly , one frequency and its amplitude are measured by dft , with which to demodulate the signals and eliminate the 該方法先用dft估計其中一個信號的頻率和幅度,以此頻率對信號解調并對消該頻率成分,最后利用自相關理論估計出另一個信號的頻率。
The adsl soho gateway not only has the adsl modem function but also has the function of application gateway . it not just completes the work that analog signals coming from adsl lines are modulated and demodulated , but also shares the information Adsl網關集adslmodem和應用網關于一體，既完成adsl接入的調制解調工作，又在此基礎上實現了共享資源，是一種有著廣泛應用前景的技術。
In this paper , we are going to use high speed digital signal processor , track the carrier wave through the digital phase locked loop , and so to demodulate the modulating signal . it can overcome the difficult problems of the other ways 而我們這里就是準備用高速數字信號處理器，利用數字鎖相環實現對載波的跟蹤，從而實現調制信號的解調，它能有效克服其他解調方式所遇到的困難。
A kind of secure communication system scheme is presented , which utilizes vss synchronizing controller to demodulate . amplitude masking modulation and spread spectrum modulation are considered to validate feasibility of the presented scheme 在此基礎上，提出了一種基于變結構混沌同步的保密通信系統模型，該模型把一個混沌系統作為加密調制器，其變結構同步控制系統作為解調器。
Gmsk is selected as demodulating method for its excellent frequency spectrum characteristics and permanent envelope property . the paper introduces in detail the gmsk demodulation principle , different demodulating algorithm and realizing principle 由于gmsk良好的頻譜特性以及恒包絡特性，本系統選擇gmsk為解調方式，并詳細分析了gmsk解調的原理和不同的解調算法以及實現原理。
Many kinds of efpi sensors and their demodulation methods were compared . a comparative simple scheme , wavelength modulated / demodulated efpi strain sensing system , was adopted and been used in the new generation fiber optic strain - sensing gauge 分析了光纖法珀應變傳感的基本原理和調制/解調方式，通過對幾種解調方案的比較，選擇了波形分析技術作為實際傳感系統的解調方案。
The paper also combines the latest ofdm technology to research and design the channel encoding technology and modulating and demodulating technologies of power line communicating system , and gives the simulating results of system design 并結合目前最新的ofdm技術對電力線通信系統中的信道編碼技術和調制解調技術進行了研究和設計，并給出了系統設計的仿真結果。
After achieving the synchronization of the pn code and carrier , despreading and demodulating the received dsss signal can be executed with the local synchronized code and carrier . so , lots of energy and fund has been expended on it 直接序列擴頻系統只有在完成了偽碼同步和載波同步之后,才可能用同步的本地偽碼和本地載波對接收的擴頻信號進行解擴、解調。
Through the analysis of advantages of several gmsk arithmetic and requirement of system processing , the base - band time lag demodulating algorithm based on quadrature demodulation and tms320vc5402 are selected for base - band processing 通過分析gmsk幾種算法的優越性以及系統對處理的需求，選擇基于正交解調的基帶時延檢波算法以及tms320vc5402進行基帶處理。
Analog is converted to digital signal by using if under - sampling technology . then a uniform hardware platform is consisted from tms320c54 family dsp , in which , diverse modulated signals are demodulated using pure software 在中頻數字化以后使用ti的tms320c54系列dsp芯片等組成硬件平臺，在這個統一的硬件平臺上實現對不同類型調制信號的純軟件解調。
The fluorescence signal collected by probe was detected , acquired by the computer , and then demodulated by the signal demodulation program . the amplitude of the signal identified the concentration of the biology material 探針收集的熒光信號經過光電倍增管探測、數據采集卡采集后由信號解調程序檢測,信號的幅度就反映了待測生物物質的濃度。
The design of the amplifier is described in detail and the noise in the circuit is calculated in the third chapter . several demodulating methods are compared and the design of the demodulator is described in detail in the fourth chapter 第四章,對幾種信號解調方式進行了比較,并對系統采用信號解調電路的設計原理和方案進行了詳盡的分析。
The process is complete by software on the hardware roof . although we only implemented one mode of modulate and demodulate , it proved that the roof is currency . what we have done is the beneficial explore to sdr 整個過程均由軟件在硬件上實現，雖然僅作了一種調制解調方式，但是驗證了該平臺的通用性，是對軟件無線電的有益的探索。
Two kinds of improved algorithms ( peak - to - peak algorithm and multipeak algorithm ) were put forward to reduce this error . 3 . a new demodulated algorithm in gap domain was introduced and the characters were analyzed 對應于常規的波長域解調算法，本文還介紹了一種腔長域解調的新方法，詳細分析了該算法的特點和性質并進行了算法仿真。
The method is given to solve the problem in adaptive demodulation that adjudgement will worsen when the snr is low . by using the error signals to reduce the demodulated signals , the bit error rate will be improved 仿真中,針對dpsk信號的自適應解調中小信噪比下門限失效的問題,提出了利用誤差改進門限判決的方法,將誤碼性能提高了1 2db 。
Theoretical analyses and experimental results show that mw - cdma systems suppress multiple - access interference and ambient noise well . moreover , the scheme gives a new guideline of thought to reduce the computation for demodulating 因此，本文所提出的多子波cdma多址方案可以很好地抑制多址干擾和環境噪聲，并且其解碼計算相當簡單。
J . mitola proposed software radio ( or software defined radio , sdr ) technology to deal with those problems , i . e . , digitizing waveforms as near as possible to rf , and modulating / demodulating signals by software 針對這些問題， j . mitola提出了的射頻信號數字化、軟件化處理的思想，即軟件無線電技術，成為解決上述問題的有效途徑。
Rake receiving is a very effective method against multi - path fading in cdma system . it separately demodulates each received signal , and then overlaps output to enhance the effect of receiving Rake接收是cdma系統抗多徑衰落的一種十分有效的方法,它是分別對每一路所接收的信號進行解調,然后疊加輸出達到增強接收效果的目的。
We completed a hardware roof of spread spectrum receiver . we finished the whole process of modulate and demodulate in the roof . the mode of modulate is bpsk modulate 本文在完成理論分析的同時制作了一個擴頻接收機的硬件平臺，在該課題中還在該平臺上實現了信號的擴頻調制和解調解擴整個過程，該調制方式為bpsk調制。

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demodulate

demodulate vt.【無線電】解調；檢波。

demodulation