demodulated signal 中文意思是什麼
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The catv charge and control system is mainly composed of the management software 、 the header data modulator and the terminal charge and control equipment. i am responsible for design catv charge and control equipment and test system. the header data modulator is used to encrypt the control single from computer and transmit it into the appointed frequency. the terminal charge and control equipment demodulate out the control single from data modulator and transmit it to the addressing control part, where the demodulated fsk single is received and well - handled by the cpu unit, decode the unauthorized signals and deliver it to the shut point, shut point make use of capability of wideband anf characteristic of shut, then the signal of illegal customer will be turn off and vice versa, the legal customer can receive the normal signal
前端數據調制器完成對計算機輸出的控制信號加密處理，將指令碼載送到一指定頻率點。終端收費控制器解調出控制信號，送至單片機尋址控制部分。單片機尋址控制部分接收經fsk數據解調器送來的信號，送入cpu單元后，解出不授權信號，然後向關斷部分送入信號，關斷部分利用pin二極體的寬帶工作能力以及關斷特性，實現對非授權用戶或者非法用戶的信號關斷，使之不能正常收視，繳費用戶進行開通正常收視，達到控制用戶通道的管理。 -
When the cur - cuit resets, the chip remains accepting state, works in burst mode, and adopts dpsk modulation mode. it proceeds quadrature - sampled intermediate frequency signal after the ad9057 has converted, then down - converses, despreads and demodulates. the demodulated baseband signal will be sended into scm to dispose through interrupt
上電復位后，晶元處于接收狀態，工作在突發模式下，採用dpsk調制方式，將ad9057轉換完的中頻信號進行復正交取樣後下變頻、解擴、解調，通過中斷將解調完的基帶信號送入單片機處理；處于發送狀態時，可將數據擴頻、調制，經ad9768送出。 -
At first, environment detection data is collected, modulated and emitted in the the system of fy - 2 and detectors. then data signal is magnified, demodulated and sent in the earth - based system of data receiving and demodulating. at last, data is received, processed, stored, displayed and judged to make alarm automatically by telephone for solar proton - events and x - ray flare in the system of data processing and alerting
首先在fy - 2衛星及探測器系統中，環境探測數據被收集、調制並發射，接著由地基數據接收及解調系統將數據信號放大、解調還原並發送，最後由數據處理及警報系統將數據接收處理、保存顯示並對太陽質子事件、 x耀斑進行自動電話報警。 -
In this part the signal from the infrared sensor was amplified by common collector amplifier, and the demodulator was built by filter. in which the signal got demodulated. because we just need the frequency of the signal, filter may achieved
通過信號通路，傳感器生成的調幅波信號轉變為與脈搏頻率相同的方波。先由運算放大器接共集電極電路完成信號放大，通過濾波得到脈搏信號的頻率，從而用濾波器電路完成了解調功能。 -
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、數據採集卡採集後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。 -
Other than traditionally theory analyze and discussion of digital correlator which is laid after demodulator, a scheme based on non - interrelated correlative dll will be discussed in this paper after referencing the theory and the result of simulation. the demodulated data and the information of carrier are not need in this plan. we sample the result of correlation between local sequences and the received signal, then realizing the code synchronization by software
不同於一般的理論分析以及解調后數字相關器的討論，本文通過理論分析與模擬結果，選用了非相干相關同步的基本結構，並加以改進，不需要解調和載波的信息，將本地序列與接受信號直接相關后進行采樣，通過軟體的方法，實現同步。 -
2. based on interoferometric technique, a parasitic interference configuration was introduced to transpose the wavelength - shift signal into phase - shift signal ; the strains were demodulated by measuring the phase change of the signal with a phase - meter
利用干涉技術，採用寄生干涉結構對傳感光柵的反射譜進行波長解碼，用相位計觀測波長漂移引起干涉儀兩臂間相位差的變化，進而監測作用在傳感光柵上的待測應變量。 -
In transmission system, the original signal is modulated to ofdm signal after be coded in dpsk. and in receiving system, the modulated ofdm signal is synchronized and demodulated
在發射端，將以一定速率輸入的二進制信息在進行dpsk編碼后調制到基帶ofdm信號上，在接收端，對已調制的ofdm信號進行同步和解調。 -
By the tuner, the dvb - t signal received has been converted to the if signal, and then demodulated by the cofdm demodulation chip. in the end, the usb controller sends the ts ( transport stream ) to the pc where it is decoded by the software
接收到的dvb - t信號經調諧器進行下變頻處理后輸出中頻信號，再進行cofdm （編碼正交頻分復用）解調，得到的ts碼流信號通過usb控制器送入pc機中進行軟體解碼播放。 -
The fpga and dsp architecture has been used in the digital correlator, by which the spread spectrum signal can be demodulated at the intermediate frequency
數字相關器採用fpga + dsp的結構設計，實現了擴頻信號在中頻的解擴解調。 -
Based on the theory of dsss, the received signal can be despreaded and demodulated only when the phase of spread sequence in the receiver is equal to the phase of the received signal, or the useful signal would be overwhelmed by the noise
根據直接序列擴頻原理，只有當接收端的本地擴頻序列與接收信號中擴頻序列相位一致時，即擴頻序列同步時，才能實現接收信號的解擴和解調，否則信號將淹沒在噪聲中。 -
Moreover, the demodulation is simulated with matlab to ensure the essential conditions for the detection system to run normally. ( 2 ) a simple and general hardware stage is built, on which the dpsk signal will be differentially demodulated and processed
在給定系統的技術指標基礎上，利用matlab對解調過程進行模擬，確定差分檢測系統正常工作需要滿足的條件； （ 2 ）採用軟體無線電的思想，構造了簡單通用的硬體平臺，軟體完成dpsk差分解調和數字處理。
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