receiving noise 中文意思是什麼
receiving noise
解釋
接收雜音-
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
聲發射源與接收訊號傳感器間的距離以及環境噪聲的電平是選擇頻帶的主要依據。 -
This method uses two spatially separated receiving equipment. cross correlation of the two outputs will therefore yield the auto correlation function ( acf ) of the signal, plus noise which is spread uniformly over the whole width
該演算法採用空間上分離的兩路接收設備，通過對包含同一個信號的2個輸出信號互相關，得到信號窄自相關函數（ acf ）和在整個帶寬里均勻分佈噪聲成分。 -
The first two methods use the advanced gaas materials and devices to reduce the noise of receiving system. without increasement of the transmitted power, the system margin gains 1 db compared to the conventional project margin, the information rate can be increased 2 mbps or more
前兩種方法通過採用先進的gaas材料和器件降低接收系統的噪聲，在發射功率不變的情況下，使系統余量比常規工程設計余量提高1db以上，信息速率可以提高2mbps以上。 -
At the same length, the insertion loss of different sub - channels also undergoes changes. this effect, along with the intrinsic background noise, impulse noise and the receiving sensitivity of modem on the adsl, will limit the maximum transmission distance on one single subscriber line
首先，銅線的插入損耗將隨著線路距離的增加而成比例地增加，並且在同一距離下各子通道的插入損耗也發生變化，這個因素和線路固有的背景噪聲、脈沖噪聲、數據機的接收靈敏度一起將限制在單用戶線上adsl所能夠傳輸的最大距離。 -
The precise clock source is crystal oscillator made of 74hc04 ; the mute circuit can conceal the error and solve the problem of noise ; the antenna switching circuit in the receiver is to select one antenna from two which receives signal better. it can improve the quality of the receiving audio signal, restrain the noise effectively and promote the system performance
高精度的時鐘源是由74hc04構成的晶體振蕩器;靜音電路將出錯的音頻信號進行差錯掩蓋，很好地解決了噪聲問題;接收機採用兩副天線切換工作，提高了音頻信號接收質量，有效地抑制干擾，提升了系統的性能。 -
The thesis analyses the problems on the noise of apd photoelectric receiving system. author designs apd laser signal receiving system circuits, front amplify circuit, controlling time - series logic circuits, dc / dc transform circuits. and takes apd bias voltage fuzzy control
分析了apd光電接收系統的噪聲問題，並對apd激光信號接收系統電路、前置放大電路、控制時序邏輯電路、 dc / dc變換電路進行了設計，採取了apd偏壓模糊控制。 -
The dialing is slow and the system ca n ' t ensure the calling party fast and accurately put through the called one who is asked for receiving. 5. the bell ring is so low that the workers ca n ' t hear in the large - scaled working space with strong noise
它存在的缺點有：工程布線麻煩、費用高；電話線路成本高且利用率低；系統可靠性差；呼叫速度慢，並且不能保證主叫用戶快速、準確地找到需要接聽的被叫用戶；振鈴聲難以保證在大范圍、強噪聲的生產場所下的工作人員接聽到。 -
The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。 -
Arranged signal activating lock circuit and time - base control circuit in the sound wave receiving circuit to take the initial signal of back wave as the valid one in the cycle, thus to improve the ratio of signal vs. noise and detective precision
在超聲波接收電路中設有信號觸發鎖定電路和時基控制電路。實現以各探頭中最早收到的回波信號為本檢測單元的有效信號，有效提高信噪比和檢測精度； 4 -
We can reduce the isi and noise by elaborately designing transmitting filter and the receiving filter when the channel is known and unaltered. however, the factual channel is time - varying and not known entirely. so the isi is always existent
在通道特性已知且恆定的情況下，通過精心設計發送和接收濾波器就可以消除碼間干擾和使噪聲的影響最小，但實際通道既不可能完全知道，也不可能恆定不變，系統碼間干擾總是存在。 -
The parameters of the long - range remote control receiving system are analyzed and simulated thoroughly, such as the signal to noise ratio ( snr ) at the receiver, the delicacy of receiver, auto - gain and band - width of the pass - band. then the important references are provided for the design of long - range remote control receiver
分析了遠程遙控接收系統的參數如接收機輸入信噪比、接收機靈敏度、自動增益和接收機通帶帶寬等，並對遙控接收系統性能指標進行了估算，為遠程遙控接收機的設計提供了一定的理論依據。 -
4. according to the analyses of underwater acoustic channel and long - range remote control receiving system, we designed the long - range remote control receiver, including a low noise prefix - amplifier, a band pass filter and an auto - gain control circuit. finally, the analog part of the receiver is tested and the frequency response of this receiving system is obtained.
結合對水聲通道特性和遠程遙控接收系統的分析，進行了遠程遙控接收機的設計，包括接收機低噪聲前置放大器的設計、帶通濾波器電路的設計和集成以及自動增益控制電路的設計，最後對接收機模擬電路進行了調試。 -
Noise and interference are inevitable in radar channel. they enter the received system through side or main beams, and reduce the system ’ s receiving signal - to - noise ratio ( snr )
在雷達通道中，不可避免地存在著噪聲和干擾，它們通過天線方向圖的邊波束或主波束進入接收系統，從而降低系統的接收信噪比。 -
After observing the correlative of pseudo noise code, we analyse the main cause of multi - access interference, and build the receiving model of multiuser system. in the thesis the optimum multiuser detectors with minimum probability of error and the near - optimum detectors are intrduced, and then pic multiuser detection is improved on
介紹了最佳多用戶檢測器和次最佳多用戶檢測器，並對現有一些并行干擾抵消多用戶檢測器進行了介紹並提出了改進的措施。對採用改進的演算法的系統用montecarlo演算法進行了誤碼性能分析。 -
High sensitivity and low power signals receiving can be realized by the low noise figure technology
低噪聲接收技術，是實現ew接收系統高靈敏度及小信號接收的關鍵技術。 -
Considering space environment of laser atmospheric communication, the thesis analyses issues of atmosphere turbulance and interference of background light noise during the course of transmission, furthermore, discusses the structure and basic constitute of the laser atmospheric communication system. combining the technical index requirement of the subject, it provides design scheme and circuit of the transmitting and receiving system
論文從激光大氣通信的空間環境出發，對光信號傳輸過程中通道中的大氣湍流和背景光噪聲干擾問題進行了分析，並在此基礎上論述了激光大氣通信系統的結構和基本組成，結合課題的技術指標，給出了發射和接收系統的設計方案及其電路實現。 -
Simulations on the key technique of spread spectrum communications are studied here, according to the characteristic of lduwarc system, issues concerning pseudo - noise codes, spread spectrum method, correlation receiving and synchronization. we also design an error correction code for the system
論文還對擴頻通信的關鍵技術進行了模擬研究，針對遠程聲遙控系統的特點，討論了擴頻碼、擴頻方式、相關接收和同步問題，同時討論了適合遠程聲遙控系統的糾錯編碼技術。 -
The adaptive receiving array can not only control itself to gain the signal and divide it from the noise when the directions of signal and noise are different, but also confirm the direction of the signal with the existence of noise
採用不同類型的自適應演算法，自適應接收陣不僅可以自動操縱自己獲得信號，而且還可能在干擾存在的情況下確定信號的方向等，使波束的零缺陷對準干擾方向，最大限度地加強有用信號，從而大大提高了信號干擾比。 -
By analysis of the reasons of why the data is not coincident, we got the following quality monitoring measures : the first is, to choose wells with low noise as receiving wells ; the second is to bring down the source sweep frequency segment ; and the third is to conduct multiple stack
通過分析，我們得出以下三點質量監控措施： （ 1 ）選擇噪聲小的井做為接收井，因為如果接收井的噪聲大於500微巴，得到的記錄基本上都是噪音記錄，要得到比較好的井間記錄，接收井的噪聲必須小於500微巴。 -
My main work in this thesis is designing and making emitting - receiving equipment, which consists of three parts, ( 1 ) signal pre - amplifying and conditioning circuit is used to filtering noise and amplifying the micro - leaking - signals
無線採集系統體積小、重量輕，使用方便，可以進行實時採集和監控。有線存儲系統體積小，可靠性高，存儲量大，可存儲8m位的數據。
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