環境背景噪聲 的英文怎麼說

中文拼音 [huánjìngbēijǐngzàoshēng]
環境背景噪聲 英文
environmental background noise
  • 環 : Ⅰ名詞1 （環子） ring; hoop 2 （環節） link 3 （姓氏） a surname Ⅱ動詞（圍繞） surround; encircle;...
  • 境 : 名詞1 （疆界; 邊界） border; boundary 2 （地方; 區域） place; area; territory 3 （境況; 境地） co...
  • 背 : 背動詞1. （用脊背馱） carry on the back 2. （擔負） bear; shoulder
  • 景 : Ⅰ名詞1 （風景; 景物） view; scenery; scene 2 （情形; 情況） situation; condition 3 （戲劇、電影的...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 環境 : environment; surroundings; circumstances; ambient; closeness; ambience; ambiance; atmosphere
  • 背景 : （布景; 襯托主體事物的景物; 對人物、事件起作用的歷史條件或現實環境） background; backdrop; setting
  1. The main research advances can be summarized as follows : ( 1 ) study the signal processing ' s performances and methods of homing torpedo system comprehensively, in order to setting up a corresponding mathematical models ; ( 2 ) analyze the ocean channel ' s effects on the work of homing system, then found some models such as target echo signal, noise ( including background noise, target radiating noise, etc ), ocean reverberation. according to them, simulate the array signal ; ( 3 ) the system structure, every function blocks composing are studied and founded thoroughly. then, discuss methods of signal processing in time domain and airspace domain ; ( 4 ) program the simulation software of torpedo ' s homing system according to the simulation models and flow charts, which connected with torpedo ' s control part

    本文所作的主要工作及研究成果主要有以下幾個方面： （ 1 ）對自導工作過程中的信號與信息處理的基本理論與方法進行了較為全面的研究，為建立一個較為完備的自導模擬系統提供了理論基礎； （ 2 ）討論了自導系統工作過程中海洋通道對目標回波信號與目標輻射噪聲信號等的影響，建立回波信號的數學模型、環境場中的噪聲信號模型（包括海洋環境噪聲、目標輻射噪聲與魚雷背景噪聲等）與海洋混響模型，模擬產生了聲自導系統基陣接收到的回波信號與噪聲信號； （ 3 ）深入研究並建立了自導模擬系統的總體框架，給出各個具體功能模塊組成，討論了聲自導系統對信號的時域與空域處理，並結合模擬程序中陣列信號處理模塊，給出固定多通道波束形成的模擬實現過程； （ 4 ）根據系統的模擬模型與已建立的模擬流程圖編制了通用魚雷模擬器自導系統模擬軟體，通過網路與控制系統相連，組成完整的魚雷模擬器。
  2. Because period narrow band signals are the main part of background noises, this thesis uses hardware description language to design a multi - band finite impulse response filter ( fir ) and downloads the program into filed programmable gate array to eliminate the period narrow - band interferences in the background noises

    3 ）在現場環境中，背景干擾主要是周期性的窄帶，本文利用硬體描述語言（ vhdl ）設計了一個多帶fir有限沖擊響應濾波器。應用到可編程邏輯器件中，消除了背景噪聲中的周期性干擾，為信號的進一步處理提供盡可能幹凈的信號。
  3. A tv target tracing system has following features : real - time, image indistinctness on the ground of dynamic tracing and external environmental distortion, high noise background intensity and so on

    電視目標跟蹤系統實時性強，由於是動態跟蹤和外界環境干擾，所以導致圖像不清晰、背景噪聲較強。
  4. Take integrity of object information into condition, a two - dimension signal processing method which can make a measurement of the target ’ s speed as well as the range is brought forward at the basis of waveform parameter design. and simulation in the background of hf multi - object with noise is taken. a comparison of signal properties, processing and antinoise detection performance is taken between mcpc and another two high range resolution radar signals : single carrier pulse coded signal and step frequency pulse coded signal

    考慮到目標信息提取的相對完整性，以高頻雷達為背景，在對多載波相位編碼脈沖串信號參數設計的基礎上，推導了三種多載頻相位編碼脈沖串信號的距離速度二維處理過程並相應的對多目標噪聲環境進行了模擬;將多載波相位編碼信號與另外兩種距離高分辨信號:單載頻相位編碼信號和相位編碼階梯跳頻信號，在信號特性、處理過程和抗噪聲特性方面進行了對比;本文從理論上為多載波相位編碼信號的波形設計和分析、信號的處理打下基礎。
  5. The underwater - radio buoy for use as obtaining the ocean ' s acoustical parameters, applied for synthetic experimentations that seeing about ocean underwater acoustic environment, can obtain and memorize the data for all kind of underwater acoustic experimentations, for example, acoustic propagation, reverberation, ocean ' s noise etc. the system can not only reduce requires in quantity of using ships and scales in military strength equipment but also keep away from ships environments, reduce background noise and increase the quality of the gathered data

    海洋環境參數獲取浮標監測系統用於海洋水聲環境綜合考察試驗中，獲取和記錄水聲傳播試驗數據。該系統不但可以減小參試艦船數量要求，降低兵力配備規模，而且可以遠離艦船環境，降低背景噪聲，提高所採集數據的質量。因此，浮標的研製對于保證未來海試完成既定試驗目標、順利完成試驗項目具有重要意義。
  6. 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。
  7. Because noise causes the mismatch between the acoustic models and the testing speech, the performance of speech recognition systems will degrade rapidly in noisy environments. therefore, noise robust technology is a very crucial problem for the speech recognition

    目前的連續語音識別系統對純凈語音已能達到非常高的識別精度，但是無處不在的背景噪聲帶來了訓練模型和測試語音之間的失配，這種失配使得連續語音識別系統的性能在噪聲環境中急劇下降。
  8. Because the field background is complex and uncertain, to remove the disturbance factor with general method is not very effective

    由於現場環境惡劣，帶鋼表面圖像具有背景復雜、噪聲大等特點，常規的分割方法難以準確提取缺陷。
  9. In the field of audio recognition, with many mature and creative technologies applying, especially the hidden markov models ( hmm ), the effect and efficient of the audio recognition system have been enhanced. but due to the mismatch between training and testing environment ( such as background, audio transition channel ), the recognition systems based on hmm tends to drastically degrade in performance

    在音頻信號識別特別是語音識別領域內，隨著隱馬爾科夫模型（ hmm ）的應用，使得系統的識別性能有了改進，但是由於訓練和測試環境（背景噪聲、音頻傳輸通道等）的失配常常導致識別性能的嚴重下降。
  10. With the development of mobile communication, speech in telecommunication under the environment of high background noise has been a problem which is an urgent demand to be meet. since the signal and noise have the same band, it is very difficult to separate speech signal from background noise, which is concerned by more and more researchers

    隨著移動通信的發展，高背景噪聲環境下的語音通信問題已成為一個迫切需要解決的問題，如何更為有效地去除背景噪聲對語音通信的影響，日益受到人們的廣泛關注。
  11. The accuracy of a speech recognition system in actually noisy environment is seriously affected by the additive noise and the channel distortions

    實際環境中的背景噪聲和傳輸通道變化所引起的畸變嚴重影響了語音識別系統的性能。
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