offset signal 中文意思是什麼
offset signal
解釋
偏置信號-
Second, the results of theory analysis and simulation research show that the output of one cycle controlled bridge switching power amplifier have dc offset because of the nonideal characteristic of reset signal. the magnitude of output dc offset voltage is proportional to width of reset pulse. a voltage compensation technique is used to solve this question, and the computation formula of compensation voltage is gived. the circuit compensated and not are researched through simulation and experiment, which results show that compensated circuit solve the output dc offset effectively
其次，理論分析和模擬研究結果表明，由於復位脈沖的非理想特性，單周控制的全橋開關功率放大器輸出端存在直流偏置問題，其大小與復位脈沖的寬度成正比。針對輸出直流偏置問題，提出了電壓補償的改進方案，給出了補償電壓的具體計算公式。對補償前和補償后的方案進行了對比模擬研究和實驗研究。 -
The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail
首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。 -
In the digital mobile communication, with the effect of modulation, transmission channels and demodulation, the received signal ineluctably has some distortion. frequncy offset is one of them
在移動通信系統中，信號經過調制發射、通道傳輸和接收解調的過程中，不可避免的會引入一些干擾，使得有用信號受到影響。 -
Magnus sandell et al. ml estimation of timing and frequency offset in multicarrier systems. research report, div. of signal processing, lulea university of technology, sweden
作者簡介：韓重陽（ 1981 ? ） ，男，河南駐馬店人，東南大學無線電工程系2005級碩士究生，研究方向為通信與信息系統。 -
The author reviewed the detection measures of prunus necrotic ringspot virus, and related the research progression of the pathogen detection technology inside and outside. the template amplication technology include pcr assays ^ nasba and so on. the cdna and crna probe which labeled with the isotope % biotin or dig, the offset probe and the peptide probe can be applied to magnify the signal. pcr - gene scan assays and pcr agilent chip chamber combine the template amplication and the signal magnification
本文回顧了李壞死環斑病毒的檢測方法，較全面地評述了國內外病原物檢測技術研究進展：在模板的擴增有各種pcr技術、 nasba技術；在信號的放大有同位素、生物素或dig標記的cdna和crna探針，分支探針和肽核酸探針；模板擴增和信號放大相結合的有pcr -基因掃描技術、 pcr安捷倫晶元實驗室技術；模板擴增和雜交以及信號放大相結合的有pcr - elisa技術、實時熒光pcr技術、生物晶元技術。 -
It is particulary suited to multirate signal transmission due to the use of an offset stacked spreading modulation scheme, which simplifies th ' e rate - matching algorithm relevant to multimedia services and facilitates asymmetric traffic in up - and downlink transmissions for ip - based applications
通過調整偏移棧，偏移的大小，可簡化多媒體服務的速率匹配演算法，特別適用於ip網路中上行鏈路和下行鏈路非對稱業務的傳送。 -
Algorithm of carrier frequency offset estimation for psk signal based on dft
信號載波頻差估計演算法 -
At last, this paper analyses the delay correlation properties of 2fsk signal, and proposes a new algorithm for symbol synchronization, which shows better performance when frequency offset exists
最後，從抗頻偏的角度出發，通過分析2fsk信號的延遲相關特性，給出了一種碼元同步演算法，具有良好的抗頻偏性能。 -
The results indicate that : with sa, the position precision of the integrated system, whose gyro drifting is 50 degree / hour and whose accelerator offset is 0. 001g, is 60 meters, its velocity precision is about 1. 75m / s out and its attitude angle precision is about 0. 25 degree. without sa, the position precision is about 20 meters, its velocity precision is about 0. 5m / s and its attitude angle precision is about 0. 1 degree. when the signal of gps is lost, the growing rate of the integrated system error is much lower than that of sins system
模擬結果表明：對于陀螺漂移為50度/小時、加速度計零偏為0 . 001g的組合系統，在有sa的情況下，位置精度大約為60米，速度精度大約為1 . 75米/秒，姿態角精度大約為0 . 25度；在無sa的情況下，位置精度大約為20米，速度精度大約為0 . 5米/秒，姿態角精度大約為0 . 1度；在gps信號丟失時，系統誤差的增長速度比純sins系統明顯減緩。 -
Associated with the military project " high speed arbitrary waveform generator ( awg ) module ", this thesis focuses on the designing methodology of analog channel of the awg developed by uestc. signal filtering, amplitude and offset controlling, square wave and modulating wave ' s generating are studied in detail and corresponding circuit implementation are developed
本文結合電子科技大學承擔的軍用型號項目「 vxi任意波形發生器es14v21 」 ，展開對任意波形發生器模擬通道設計技術的研究，詳細討論了信號的濾波、放大、衰減、加偏處理以及方波和調幅波的產生方式，並設計了具體電路。 -
Timing advance ( ta ) makes ms transmit signal ahead of schedule, to offset the delay of radio transmission line and thus transmit uplink signals of every ms to the bts in their own timeslot
時間提前技術為了補償無線傳輸路徑的延時而使ms提前發射信號，使得上行信號在各自的時隙內到達bts 。 -
As a result, the low - frequency contents increase as the centroid of signal spectrum experiences a downshift, in case that frequency is independent on quality factor, the offset of the centroid frequency is proportional to the integral of attenuation factor along wavepath, thus can he used to reconstruct the attenuation distribution
假設介質的品質因子與頻率無關，地震波主頻的偏移量與吸收系數對傳播路徑的積分成比例，則通過它們之間的關系可以估測介質的吸收系數。 -
Based on the coherent reception theory of radio signals and the theory of digital signal processing, the effects of carrier frequency offset, sampling clock offset, and symbol timing offset on ofdm signals are exploited. a series of amendments and new algorithms is derived from the in being algorithms of guard interval based symbol timing and frequency offset estimation, frequency - domain frequency offset, sampling offset, and symbol timing offset estimation
以無線信號的相干接收和數字信號處理理論為基礎，就載波頻偏、采樣鐘偏差和符號定時偏差對ofdm信號的影響進行了分析，對基於保護間隔的符號定時與載波頻偏估計演算法和多種現有頻偏、采樣鐘與符號定時偏差的頻域估計演算法進行了研究，提出了一系列改進措施與新演算法。 -
This project study the all - digital modulation and demodulation of / 4 offset differentially encoded quadrature phase shift keying ( / 4 - dqpsk ). then use / 4 - dqpsk digital modulation and baseband differential demodulation technology to implement digital signal transmission. the bite rate is 500kb / s and the intermediate frequency is 2mhz
本課題對/ 4 - dqpsk的全數字調制解調技術進行研究，利用/ 4 - dqpsk數字調制和基帶差分解調技術實現數字信號的傳輸，實現傳輸碼率500kbps ，調制中頻2mhz 。 -
The frequency offset estimation algorithms for gmsk signal are also discussed and a frequency offset estimator with larger estimation range and higher accuracy is proposed. two kinds of synchronization structures are compared with each other. at last, the synchronizer described above and a differentially coherent demodulator compose a blind gmsk receiver
其次，基於對目前gmsk信號盲載頻偏差估計方法的分析和比較，根據第五章提出的頻差估計思想，提出一種寬估計范圍、高精度的gmsk信號頻差估計方法。 -
Offset is a time presented in bytes ( different settings required different amount of memory to store sound data ) between the played signal and the same signal recorded by microphone
垂距是代表時間，以位元組的形式（不同的設置要求不同的記憶體的數量存放聲音數據）在播放的的信號和相同的信號之間由話筒記錄。 -
Based on the similarity of common reflection point trace gathers in one coherent zone, crs stack can focus more energy on the vicinity of the reflector, and therefore can obtain a high signal - to - noise ratio zero offset section by stacking events with the same phase
共反射面疊加利用了鄰近多個共反射點道集的相似性，提高了資料的覆蓋次數，從而壓制了隨機噪聲，增強反射波同相軸的連續性，大幅提高了地震資料的信噪比。 -
And then the stability and the stable error response of the dpll are analyzed. there is an obvious doppler shift frequency offset in the received signal with flight at a high speed, in the dissertation the uniform sampling second - order dpll is used to remove the frequency bias for its excellent high - pass characteristic of the error transfer function
由於高速飛行的遙測目標在接收信號中會出現較大的多普勒頻率分量，而典型均勻采樣二階數字鎖相環dpll （ digitalphase - lockedloop ）的誤差函數具有高通特性，所以本文提出一種利用其高通特性來去除多普勒頻率分量的新方法。 -
Besides introducing some different ways of readouting the signal of detector pixel, the principle circuitry of the whole array is also put forward. and a kind of temperature compensated load circuit is put forward to improve the offset correction and the gain correction for non - uniformity
本文對整個焦平面陣列的讀出電路做了原理性地分析，著重提出了對讀出電路校正的方法，並對傳統的校正方法做出了修正，使非致冷微測輻射熱計焦平面陣列具有更可靠的工作性能。 -
This thesis deals with the synchronization technologies for all digital receiver, particularly carrier offset estimation for mpsk signal
本文研究全數字接收機中的同步技術，重點是mpsk信號的載波頻偏和相位誤差的估計和恢復演算法。
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