等雷頻 的英文怎麼說

中文拼音 [děngléibīn]
等雷頻 英文
isokeraunic
  • : Ⅰ量詞1 (等級) class; grade; rank 2 (種; 類) kind; sort; type Ⅱ形容詞(程度或數量上相同) equa...
  • : 1. (雲層放電時發出的響聲) thunder 2. (軍事上用的爆炸武器) mine 3. (姓氏) a surname
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  1. Whatever it is radar, eccm equipment, communication equipment or instrument, frequency source with high stability is needed to guarantee the quality of carrier signal

    無論是達、電子對抗,還是通信、儀器設備都需要高穩定度的率源,以保證載波信號的質量。
  2. The frequency respond to : the brief name rings, and measure a device right high, the inside, frequency for ability for even emersion of signal, general enlarger of low and each segment respond to and should attain the the. ear that excluding the person is out of hearinged, but skin etc. the other sensory apparatus it can feel. for example thunder, the frequency of the thunder voice is low, person ear can hear few, but we can feel the fierce vehemence of that kind of manner, and can have to grow the center of chest however spirit felling that come. this make the perfect new of science spirit, summer that re - appear of orotund details the the dollar of superior quality adoption the for piece with careful electric circuit designing, frequency scope attaining the the, can like this satisfying broadcasting the true of this new and high of of or of ring the request

    以外人的耳朵聽不到了,但是皮膚其它感覺器官能感覺到。例如打時,聲的率比較低,人耳所能聽到的很少,但我們能感覺到那種來勢兇猛的氣勢,會有種胸口透不過氣來的感覺。本著使聲音細節完美重現的科學精神,夏新採用優質的元器件和嚴謹的電路設計,率范圍達到,這樣就能夠滿足播放或這類新型高保真音源的響要求。
  3. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    器是微波通信、射電天文學、達、離子物理、遙控、遙感、電子對抗,以及許多微波測量系統中至關重要的部件。在現代通信系統中,毫米波段通常採用超外差接收機,混器作為第一級就成為關鍵部件。由於在毫米波段,同段高性能的本振源成本高,技術難度大,採用分諧波混技術是解決此問題的有效途徑,只需射率1 / 2 、 1 / 4甚至1 / 8的本振率即可實現混
  4. The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

    本文從星載達的星地幾何關系入手,舍棄傳統星載合成孔徑達研究中的球地球模型和圓軌道模型,研究了在地球橢球模型和橢圓軌道模型下由達天線確定目標坐標的方法,並在此基礎上研製了星載合成孔徑達系統設計與模擬軟體,完成達系統天線尺寸、脈沖重復率、信號帶寬、達信號數據率、達發射功率、衛星平臺的偏航牽引幾個方面的系統參數設計以及達多普勒特性、達系統模糊、達定位及精度的分析,最後完成達回波信號的模擬。
  5. Company now have independence develop ten many china patent and many independence intellectual property ' s software copyright ' s product ; company major product : cable television consumer management control system ( but look for address 2 - 8 branches allot style, 8 - 32 gather line style ) ; shoot frequently plus unfasten harass system ( crowd plus crowd unfasten, cent two sections, point channel shan unfasten ) ; video frequency number subsections plus unfasten harass system ; cable television network burglarproof sow system ; number cable television product is with number mmds ( microwave ) systematically ; general purpose type prevent thunder supply electric appliances, shoot frequently automate supply electric appliances, but look for address control supply electric appliances ; power supply prevents thunder protection product ; pass flow branch, dispenser, split utensil, cavernous wave utensil, power supply inserts utensil, but transfer attenuator, but transfer equalizer wait for

    目前擁有十多項中國專利和多個自主知識產權的軟體版權的產品;公司主要產品:有線電視用戶管理控制系統(可尋址2 - 8戶分支分配式、 8 - 32戶集線式) ;射加解擾系統(群加群解、分兩段、按道單解) ;視數字分段加解擾系統;有線電視網路防盜播系統;數字有線電視產品與數字mmds (微波)系統;通用型防供電器,射自動控制供電器,可尋址控制供電器;電源防保護產品;過流分支、分配器,分流器、陷波器、電源插入器,衰減器、均衡器
  6. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上,本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度運動學參數的單站無源測量模型,並對它們進行了分析和模擬;第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件;第四章針對傳統擴展卡爾曼( ekf )方法的缺點,提出了一種修正協方差的擴展卡爾曼濾波( mvefk )方法,並將其和ekf 、 mgekf 、 iekf常用的單站無源定位濾波方法進行了性能模擬比較;第五章通過引入達機動目標跟蹤方法和模型,提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法;第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究,提出了幾種高精度測量脈沖序列多普勒率變化率的方法。
  7. Othr ( over - the - horizon radar ) is a kind of hf ( high frequency ) radar with great expectation, which has arisen great concern worldwide because of its large coverage, anti - stealth character and so on

    超視距達( othr )是一種具有較大發展前景的高達,以其覆蓋距離遠、覆蓋面積大和抗隱身優良特點受到各國學者的廣泛關注。
  8. Because of the limited cross - range resolution, high frequency ( hf ) over - the - horizon ( oth ) radar has the poor ability to determine the number of group targets and identify the large warship such as aircraft carrier in engineering applications

    我國的高達已進入工程化應用階段,但由於受分辨能力的限制,在群組目標的個數分辨及大型船隻的識別方面仍有不足之處。
  9. This waveform library not only contains those typical radar signals like single - carrier frequency signal, encoded signal, lfm etc, but also include many hybrid modulated signals, like fsk / psk signal, fsk / ppm signal, psk / ppm signal, pseudo - random fsk / psk signal, etc. we use visual c + + 6. 0 to implement this software program, this makes it easy in control operation and provides a nice human - machine interactive interface

    波形庫中既包含了傳統的達波形,如單載脈沖信號、 lfm 、編碼信號,又包括了復合調制波形,如fsk / psk信號、 fsk / ppm信號、 psk / ppm信號、偽隨機fsk / psk信號。採用vc編程實現,使其具有友好的人機界面和靈活的控制操作。
  10. Ftt makes the frequency sampled at a same frequency interval on unit circle, and the frequency interval limits the practical range - precision of the radar, and makes range precision at an equivalent level with range - resolution

    由於fft的實質是率在單位圓上的間隔采樣,其采樣間隔限制了達的實際測距精度,使得其測距精度與其距離分辨力處于同一量級。
  11. Except with the advantages of long range early warning and anti - stealth, rending anti - radiation missiles useless, also for its inherent flexibility and mobility that enlarge warning region, high frequency ship - borne surface wave over - the - horizon radar ( hf sswothr ) has been widely used in military domain

    地波艦載超視距達具有遠距離預警、反隱身、抗反輻射導彈攻擊方面的顯著特點。而且載艦本身的靈活性、機動性又提供了更廣闊的警戒空間,因此它在軍事上具有廣闊的應用前景。
  12. Hydrometeors have dominant effect on the performance of systems operating at frequencies above loghz, and the remote sensing of hydrometeors is an important subject for radio propagation, radar meteorology and atmosphere physics etc. based on the physics characteristics of rainfall, fog and clouds, the propagation characteristics and remote sensing of hydrometeors are investigated and discussed

    水凝物是影響10ghz以上段系統性能的主要因素,它是電波傳播、達氣象、大氣物理和環境遙感學科研究的重要對象。本文基於降雨和雲霧的基本物理特性,對降雨和雲霧的毫米波傳播特性、降雨和雲霧的遙感以及霧的紅外輻射衰減特性進行了分析和研究。
  13. The model considers peak value of lightning current, tower grounding resistance, tower style, line surge impedance, power frequency voltage and distance between towers

    模型中考慮了電流幅值、桿塔沖擊接地電阻、桿塔具體形狀、尺寸、桿塔波阻抗、工電壓及檔距因素的影響。
  14. In this thesis improved algorithms are presented as follows : ( 1 ) an algorithm based on the detection of arithmetical series is presented to deinterleave radar signals with stagger pris, especially to those with high order stagger ones. but this algorithm is limited to the model of stagger pri presented by resnick ; ( 2 ) an algorithm is presented to estimate the pris of radar signals with jittered pris based on stochastic dynamic - linear models. this algorithm fits radar signals with jittered pris well, especially when jittered amount is large

    針對這種情況,本文提出了以下改進的重分選演算法: ( 1 )針對參差pri脈沖列提出一種重分選演算法,該演算法使用差數列的檢測進行參差鑒別,非常適于對高參差達脈沖列的分選,但只局限於斯尼克提出的參差模型; ( 2 )針對抖動pri脈沖列提出基於動態線性模型的重分選演算法,非常適用於抖動量較大的情況。
  15. Large time - band product signals such as linear frequency modulation signals ( lfm ), nonlinear frequency modulation signals ( nlfm ), phase coded signals and so on are one of key technologies for pulse compression radar systems

    具有大時寬帶寬積的信號,如線性調信號、非線性調信號、相位編碼信號達應用脈沖壓縮技術的關鍵之一。
  16. Pulse compression technique and large timeband product signals such as linear frequency modulation signals, nolinear frequency modulation signals, phase coded signals and so on are widely used in modern radar systems to improve the resolving power both in range and in speed domain

    現代達為了提高達作用距離和速度分辨力、距離分辨力,廣泛採用了脈沖壓縮技術及大時寬帶脈壓信號如:線形調、非線形調、相位編碼信號
  17. Radio - frequency noise jamming is an effective jamming to pulse compressed ( pc ) radar. it shows the best jam quality when it ' s bandwidth equals to the jammed signal ' s bandwidth and it ' s central frequency equals to that of the jammed radar ' s receiver

    噪聲干擾對脈沖壓縮達是一種有效干擾,在其帶寬達信號帶寬,中心率對準達的中心率時具有最佳的干擾品質。
  18. This paper ' s study is focused on the principle of bistatic sar on the basis of giving a brief introduction of sar principle, including azimuth resolution, mapping width, focusing deepness, pulse repetition frequency limitation and radar equation etc. then the paper studies the special form of bistatic sar with stationary transmitter

    在簡要介紹了合成孔徑達的成像原理后,本文著重從原理方面對雙站sar進行了分析,討論雙站sar的方位向解析度,測繪帶寬,聚焦深度,脈沖重復率限制,達方程問題,然後對發射機固定的雙站sar這種特殊的雙站sar模式進行分析。
  19. Indispensable for high quality optical carrier signal reception in a large dynamic range, agc analog optical receivers are widely used in the optical transmission of radio and microwave signals, such as fiber catv, direct broadcast satellite tv, wireless communication and radar

    摘要自動增益控制模擬光接收機廣泛應用於光纖有線電視、光纖直播衛星電視、無線通訊及微波信號光傳輸,是實現大動態范圍光載波信號高質量接收必不可少的一項技術。
  20. This paper utilizes masking rate theory to analyze the variation of center zero - level energy, the influence of metallic mesh ’ s different parameters on infrared transmitting ; deduces the relational expression between infrared transmitting efficiency and metallic mesh ’ s parameters ; comes to the conclusion that we can improve infrared transmitting efficiency by increasing

    理論研究表明,金屬網柵的周期選擇在200 ~ 400 m之間,線寬不大於10 m ,是較為理想的網柵參數。最後,在實驗室里用1 ~ 20ghz的信號發生器、功率放大器和譜分析儀達波檢測設備,對金屬網柵的屏蔽效率進行測試。
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