載波抑制 的英文怎麼說

中文拼音 [zǎibōyìzhì]
載波抑制 英文
carrier squelch
  • 載 : 載Ⅰ名詞（年） year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 抑 : Ⅰ動詞（向下按; 壓制） restrain; repress; curb Ⅱ連詞[書面語]1 （表示抉擇） or 2 （表示轉折） but3 ...
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 載波 : signal carrier; carrier wave; carrier: 3路載波 three channel carrier載波傳輸 carrier transmission...
  • 抑制 : 1 （控制） restrain; control; check; hold up; curb; stop; repress; bridle; choke; prehension; sup...
  1. Suppressed carrier ssb emission

    抑制載波單邊帶發射
  2. Firstly, the methods to restrain the effect of ship swing are studied for two - axes shipbome radar. two different methods based on ship rectangular frame and inertial frame are proposed separately according to consistence of radar base angle and beam angle

    本文首先研究了艦載兩軸雷達系統抑制船搖的方案，對雷達天線轉角和波束轉角一致和不一致的情況，分別提出了基於甲板坐標系穩定和基於大地坐標系穩定的不同方法。
  3. In addition to the conventional techniques such as low sidelobe antennas and displaced phased center antenna ( dpca ), there has been great interest in space - time adaptive processing ( stap ) because it can suppress clutter effectively and improve the detection performance of airborne phased array radar evidently

    除了採用低副瓣天線、偏置天線相位中心（ dpca ）等傳統雜波抑制技術，能夠有效提高機載相控陣雷達地雜波抑制能力和動目標檢測性能的空時二維自適應處理（ stap ）受到了廣泛關注。
  4. The characteristics of the ground clutter are analyzed and presented. the development and the theories of clutter suppression of airborne radar are desicribed systematically

    首先分析總結了地物雜波頻譜的組成特性，系統地闡述了機載雷達雜波抑制的基本理論及其發展動態。
  5. The ground moving target detection ( gmti / gmtd ) is an important function of the battlefield awareness radar and fighter ' s fire - control radar. in the gmti / gmtd the ground clutter will do strong harm to the detection and stap can be used to suppress the clutter

    戰場感知雷達和機載火控雷達的地面慢速目標檢測功能也受到地雜波的制約，可以利用空時二維自適應處理提高抑制雜波的能力。
  6. Carrier frequency leakage less than - 40db can be attained since good agreement of the two diodes antiparalleled in even - harmonic mixer is guaranteed inherently

    在簡化載波信號產生電路的同時，利用偶次諧波混頻器固有的本振偶次諧波高抑制度特性，來抑制載波泄漏。
  7. This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller

    本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。
  8. The methods that can efficiently suppress the disturbance on gate of switching component of the inverter - bridge are synthesized. a dual - inductor output filter is employed to improve electromagnetic interference ( emi ), due to turn - on or turn - off of the power switches of the inverter, which may be lead loads into trouble

    本文詳細論述了1kva25hz新型鐵路信號電源和2kva高頻在線式ups的設計和調試工作，總結了幾種能夠有效抑制逆變橋功率開關管門極干擾的措施，並且運用一種雙電感結構的輸出濾波器來改善由逆變器功率管在開關過程中產生的、影響負載設備正常工作的電磁干擾。
  9. Clutter suppression is critical to airborne early warning surveillance sensors

    雜波抑制是機載預警雷達下視工作時的關鍵問題。
  10. Bsr confronts with complicated clutter circumstance, it ' s the most important thing we must do to restrain clutter not smooth in time domain or frequency domain in order to detect interesting targets of mainland and sea level

    機載戰場偵察雷達面臨的雜波環境是很復雜的，有效地抑制時間非平穩和空間非平穩的雜波干擾是雷達系統完成地面目標、海洋目標以及低空目標檢測必須首要解決的問題。
  11. Carrier - suppression ratio

    載波抑制度
  12. The basic idea is that increasing the equivalent harmonic impedance of power network by valid control of active filter, in order to enhance the performance of passive filter and damp the resonance between the passive filter and the equivalent inductance of the power network

    無源支路在補償無功功率的同時還可以濾除因非線性負載產生的特徵諧波電流，為了抑制無源支路跟電網等效電感產生的諧振現象以及改善無源濾波器的濾波性能，系統中採用諧振注入式有源濾波拓撲。
  13. Then a thorough analysis to the bias - magnetic of ppfc is made. the retraining effects of the main parameters ( include clamping capacitance c, output filter inductor lf, load r, the leakage inductor ls and source winding resistance r ) are studied under the conditions of different von, different ton and different winding parameters. then a conclusion can be drew, that the smaller lf and the bigger r are, the better the bias - magnetic is restrained and c has a best value to retrain the bias - magnetic

    分別對管壓降不同，導通時間不同以及兩原邊繞組參數不一致（包括漏感、電阻、激磁電感三種情況）的情況下，主要參數（包括箝位電容c 、輸出濾波電感lf 、負載r 、原邊繞組漏感ls 、原邊繞組電阻r ）對偏磁的抑制作用進行了模擬分析研究，得出lf越小， r越大時激磁磁勢偏移量ni越小， c在其他參數確定時對抑制偏磁有最優值等結論，為參數的優化設計提供了依據。
  14. The system can resolve the noise and impedance on the power line and obviously improve the abilities of anti - disturbance and successful rate of communication. at the same time, the software realy method and arithmetic is also introduced to settle the problem of attenuation and increase the distance of carrier communication, it can satisfy the need of remote reading meter system

    該系統有效地克服了電力線噪聲和阻抗變化等干擾因素，提高了抗干擾能力和通信成功率，同時提出軟體中繼的思想和演算法並加以實現，進一步抑制了線路衰減快的問題，使載波通信的距離增加，滿足了遠程抄表系統的要求。
  15. This dissertation focuses on studying adaptive clutter suppression of airborne radar. it not only gives impetus to the application of adaptive filtering and spectral estimation but also have important significance to project development

    本文對機載雷達雜波抑制技術進行研究，該研究對自適應濾波和譜估計的快速實時應用及工程研製具有重要意義。
  16. At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db

    本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素（ ql值）超過1000的一系列低損耗、高q值聲表面波rayleigh波或stw諧振器，頻率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同頻率的高性能聲表面波諧振器。並採用噪聲系數為1 . 25db的低噪聲系數放大器，精心設計電路，優化設計布置印製電路板，用標稱頻率為1ghz的聲表面波諧振器為頻率控制元件，製作出在偏離載頻1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的低相位噪聲聲表面波振蕩器。
  17. What i have done in this subject include : 1. consult the reference about gpr and appreciate the general theory of gpr ; 2. analyze the signal model of carrier - free pulse ground penetrating radar and the feature of each part of radar echo data

    本人的主要工作包括： 1 .查閱探地雷達資料，了解探地雷達基本原理； 2 .分析無載頻脈沖探地雷達回波數據信號模型及各信號分量特徵； 3 .研究並完成信號處理演算法，即雜波抑制和合成孔徑處理兩部分演算法； 4 .實測數據進行模擬，驗證演算法效果並分析模擬結果。
  18. This dissertation develops research work for some fields in which ground clutter suppression algorithm may be used for airborne phased - array radar, software design of 3dt - - stap algorithm with adaptive space - frequence steer vector algorithm is completed for clutter suppression realtime processing system based on tigersharc ts101 chip

    本論文圍繞機載相控陣雷達的空時二維處理技術展開研究工作，主要任務是為系統選擇地雜波抑制的演算法，並完成以浮點dsp晶元（ ts101 ）為核心的基於3dt
  19. Conventional airborne radar clutter suppression techniques utilize the diffrernce in doppler frequency domain between clutter and target returns to suppress clutter. doppler frequency domain one - dimension adaptive filtering, which usually used in main lobe clutter suppression

    傳統的機載雷達地雜波抑制方法採用多普勒頻域一維自適應濾波，即利用雜波和目標信號回波在多普勒頻域上的差別對雜波進行抑制。
  20. The list betterments aimed at the properties of system : through the testing of dc voltage, pulse width and inverting voltage and frequency can be regulated online to fit for different steady load ; reducing speed ripples by compensating with nonzero voltage working proportional time ; adopting the technology of harmonics suppression. as a result, the high precision and wide speed control is realized and the step out is overcome

    針對系統的性能指標，做了如下改進：對直流側電壓的檢測，在線調整逆變器導通脈寬、輸出電壓和頻率，可以適應不同大小的恆負載；並用非零電壓矢量作用時間進行補償的方法，減小電機的低速脈動；加入了諧波抑制技術等。
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