甚高頻雷達 的英文怎麼說

中文拼音 [shégāobīnléidá]
甚高頻雷達 英文
v. 動詞 h. f. radar
  • 甚 : 甚代詞[書面語] （什麼; 怎麼） what
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 頻 : 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...
  • 雷 : 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
  • 達 : Ⅰ動詞1 （暢通） extend 2 （達到） reach; attain; amount to 3 （通曉; 明白） understand thoroughly...
  • 高頻 : high frequency
  • 雷達 : [訊] radar （縮自 radio detection and ranging）
  1. Additional trials on aeronautical telecommunication network ( atn ), surface movement guidance and control system ( smgcs ), electronic flight strips ( efs ), secondary surveillance radar mode s data link and very high frequency data link ( vdl ) are planned for this year

    此外，有關航空通訊網路、地面活動引領管制系統、電子飛行紙條、 s模式的二次監察雷達數據鏈路和甚高頻數據鏈路的進一步試行運作，亦計劃在本年進行。
  2. 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

    混頻器是微波通信、射電天文學、雷達、等離子物理、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，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  3. Leasing of secondary surveillance radar and very high frequency 7. communications facilities at xisha

    租用在西沙設置的二次監察雷達及甚高頻通訊系統。
  4. This system employed a new concept for measuring upper winds, viz. use of vlf very low frequency in the range of 10 - 13 khz signals from a global navigational network, omega, for computing the wind

    與以往無線電相比，該系統在測風方面則採用了一種新的概念，利用世界性奧米茄導航站網的甚低頻信號10 - 13khz來計算出高空風向和風速，無需用雷達追蹤探空儀位置。
  5. Measurement of pressure, temperature and humidity operated in much the same principle as the older version of radiosonde, but computation of wind was made use of the vlf ( very low frequency in the range of 10 - 13 khz ) signals of a world - wide navigational network, omega

    該系統量度高空氣壓、氣溫及濕度的方法與舊式無線電探空儀大致相同，但在測風方面則採用了一種新的概念，利用世界性奧米茄導航站網的甚低頻信號（ 10 - 13khz ）來計算出高空風向和風速，無需用雷達追蹤探空儀位置。
  6. Service charges for use of the very high frequency communications facilities and secondary surveillance radar data to enhance safety and improve operational efficiency

    租用甚高頻通訊設備及二次監察雷達數據的服務費用以加強飛行安全及運作效率
  7. Conversion of signals from if analog into digital samples carrying phase and amplitude information has been traditionally implemented in the form of two parallel if to baseband converters operated in quadrature each followed by a / d converters which thus provide digitized in - phase ( i ) and quadrature ( q ) components

    對于傳統雷達信號接收機，幅相一致性較差。為克服這一問題，人們考慮在中頻，甚至射頻就對信號數字化，再在數字域內進行解調。同樣需要高速的數據採集系統才能滿足要求。
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