維雷孔 的英文怎麼說

中文拼音 [wéiléikǒng]
維雷孔 英文
wirekoon
  • 維 : Ⅰ動詞1 （連接） tie up; hold together; link 2 （保持; 保全） maintain; safeguard; preserve; keep ...
  • 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
  1. A new method of polarimetric sar three - dimensional imaging

    一種新的合成孔徑雷達三維成像方法
  2. Based on the doppler effect and pulse coherence technique, synthetic aperture radar ( sar ) breaks through the azimuth resolution limitation imposed by real aperture antenna. in combination with the pulse compression technique, two - dimensional high resolution imagery to distant targets can be realized

    合成孔徑雷達（ sar ）利用以多普勒頻移理論和脈沖相參為基礎的合成孔徑技術，突破了實孔徑天線對方位向分辨力的限制，與脈沖壓縮技術相結合，實現了遠距離目標的二維高分辨成像。
  3. ( 2 ) on the leading edge, the film cooling effectiveness at the zone immediately downstream of the cooling holes is affected by blowing ratio and mainstream reynolds number, while the effects are not important in the downstream zone far from the cooling holes. ( 3 ) on the front half of pressure surface, the effectiveness increases with decreasing blowing ratio at the downstream near the cooling row and it is contrary at the downstream far from the cooling row. ( 4 ) on the rear pare of the pressure surface, the effectiveness decreases with increasing blowing ratio and does not vary so much downstream in the cases of higher blowing ratio

    研究結果表明葉片吸力面端壁附近區域壓力系數分佈呈現出較強的三維特性，動葉吸力面尤其明顯；氣膜孔流量系數隨吹風比的增加而增大，在高吹風比情況下，流量系數逐漸趨于常數；在不同型面區域，冷卻效率分佈有較大的差異，而且吹風比與主流雷諾數的影響程度也不盡相同；低吹風比下，孔出口下游附近可以得到較好的冷卻，中、高吹風比下，冷氣射流在加速流動主流的作用下返回壁面進行二次冷卻，孔下游較遠區域可以得到較好的冷氣覆蓋。
  4. Synthetic aperture radar ( sar ) is a new type of radar system developed since 1950 ' s. it breaks through the resolution limitation imposed by real aperture. with pulse compression technology, two - dimensional high resolution to distant targets can be realized

    合成孔徑雷達（ sar ）是五十年代發展起來的一種新型雷達體制，它利用合成孔徑原理，突破了實孔徑天線對解析度的限制，並結合脈沖壓縮技術，可以對遠距離目標進行方位向和距離向兩維高分辨成像。
  5. Aiming at the problem of angle motion estimation in monopulse three - dimension imaging, a novel angle motion parameters estimation method based on the inverse synthetic aperture radar imaging for difference beam is presented

    摘要針對單脈沖三維成像時的目標角運動估計問題，提出一種基於差波束逆合成孔徑雷達成像的新的角運動參數估計方法。
  6. A polarimetric sar combines both advantage of measuring full complex scattering matrix for each resolution cell in a scene and producing two - dimensional high resolution images, and is thus playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers for application in both civil and military areas

    極化合成孔徑雷達（ sar ）具有可以測量場景中每個分辨單元的全極化散射矩陣以及產生二維高分辨力圖像的兩大優點，因此無論在民用和軍用的採集地表或地面覆蓋物的物理和電磁結構信息的應用中起著越來越重要的作用。
  7. The polarimetric sar is a new type imaging radar to measure polarimetric characteristic of radiant signals and combines both advantage of measuring full complex scattering matrix for each resolution cell in a scene and producing two - dimensional high resolution images, which greatly improve its ability to discern surface features. polarimetric sar is thus playing a more and more important role in research on remote sensing and application area

    極化合成孔徑雷達（ polarimetricsar ）是用來測量輻射信號極化特徵的新型成像雷達，具有能夠測量場景中每個分辨單元的全極化散射矩陣和產生二維高解析度圖像的兩大優點，大大提高了它對地物的識別能力，因此在遙感技術研究與應用領域中起著越來越重要的作用。
  8. The main work is given as follows : the stepped - frequency waveform synthesizing the wideband signal, the synthetic range profile ( srp ) by ifft, the range resolution of stepped - frequency waveform, the effect of the radial velocity on the srp, the radial velocity compensation, ambiguity function, waveform design and stepped frequency sar imaging and so on

    包括：頻率步進波形合成超寬帶信號分析， ifft方法獲得目標一維距離像與距離解析度分析，徑向速度對目標距離像的影響、速度補償、頻率步進信號的模糊函數分析，以及頻率步進波形照射下的合成孔徑雷達成像、波形設計與系統設計。
  9. The concept, advantages and history of bistatic isar are introduced first in this paper, then 2 - d turntable imaging of monostatic isar the special example of bistatic isar is studied. on the basis of monostatic isar four imaging algorithms are analyzed, including fft algorithm, filtered backprojection algorithm, spectrum extrapolation algorithm and esprit algorithm, and compared in the small and big angel of imaging. on the basis of monostatic imaging the 2 - d turntable imaging principle of bistatic isar is studied,

    本文首先闡述了雙站逆合成孔徑雷達的概念、優點和發展歷程，然後研究了雙站逆合成孔徑雷達的特例? ?單站逆合成孔徑雷達對轉臺目標的二維成像演算法，並在此基礎上分析了四種主要的轉臺成像演算法， fft演算法、濾波逆投影演算法、譜外推演算法和esprit演算法，並對以上各種演算法分別在小角度和大角度下的成像性能進行了比較。
  10. Sar interferometry is an established technique for the estimation of the height location of scatterers, through the phase difference in images acquired from spatially separated locations at either end of a baseline. interferometric synthetic aperture radar ( insar ) can provide accurate digital three - dimensional topographic measurement with all weather conditions day and night

    干涉合成孔徑雷達（ insar ）利用合成孔徑雷達（ sar ）系統從空間分離的兩個位置對同一區域成像，由相位差與路徑差的關系來提取目標的高程信息，能夠全天時、全天候的獲取大面積、高精度三維地形數據。
  11. Taking the phase information extracted from the plural data acquired by sar as its source, interferometric synthetic aperture radar is developed to obtain the terrain information and variety details

    合成孔徑雷達干涉測量技術（ interferometricsyntheticapertureradar ，簡稱insar ）是以合成孔徑雷達的復數據提取的相位信息為信息源獲取地表的三維信息和變化信息的一項技術。
  12. It ' s easy to characterise any driver contracted to flavio briatore as a peg to be fitted in any hole that happens to suit the italian wheeler dealer, but kovalainen has firm ideas about his future

    那些與弗拉維奧?布利亞托雷簽約的車手總是很容易被描繪成一個能夠適合各種孔洞的螺釘，並且碰巧適合這個精明的義大利商人，但是科瓦萊寧對于自己的未來有著堅定的想法。
  13. The above waveforms discussed are to synthesize the wb or uwb with narrow band pulses. assuming the transmitting uwb linear frequency modulation ( chirp ), dechirp processing is introduced, and the method involved to obtain high resolution by reducing the if bandwidth is presented. furthermore, dechirp processing used to sar imaging is discussed, and the processing steps are described

    < wp = 4 >以上研究的兩種信號形式都是通過窄帶子脈沖串相參合成的方法來獲得超寬帶回波信號，本文還探討了去斜率（ dechirp或stretch ）方法，分析了去斜率降低接收機中頻帶寬、 fft獲得目標一維距離像的原理，並探討了線性調頻去斜率合成孔徑雷達成像，給出了具體實現步驟。
  14. Because of its ability not only to produce two - dimensional high resolution images of the scene illuminated, but also to measure complete complex scattering matrix for each resolution cell, and to operate under all weather conditions and all the time, day and night, a polarimetric synthetic aperture radar ( sar ) is playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers of the earth

    極化合成孔徑雷達（ sar ）能夠通過照射場景，對場景進行二維（方位向和距離向）高分辨力成像，同時測量出每個分辨單元的復散射矩陣。由於極化合成孔徑雷達具行全天候和全氣候工作的能力，使得極化合成孔徑雷達在採集地表及其覆蓋物的物理（電結構）細節信息方面起著越來越重要的作用。
  15. This thesis mainly studies the digital pulse compression technique and analyses the pulse compression performance of lfm signal with high compression ration. it also simply describes the basic theories of sar imaging and signal processing. based on these theories and high performance digital signal processing chip adsp21160, we successfully design and realize a frequency domain digital pulse compression system on hhpc board with four adsp21160 embedded

    本文主要研究了合成孔徑雷達成像技術中距離和方位頻域數字脈沖壓縮技術，著重分析了高壓縮比下lfm信號的脈壓性能，簡述了合成孔徑雷達成像的基本原理和信號處理，在此基礎上結合高性能數字信號處理晶元adsp21160研製成功了基於hhpc板的二維頻域數字脈沖壓縮處理系統。
  16. The effect of the radial velocity on synthetic spectrum and synthetic range profile is discussed, and the velocity compensation method is described. the ambiguity of stepped - chirp is presented and < wp = 6 > used to design the waveform. furthermore, the stepped - chirp sar system design and sar imaging are discussed

    創新點在於：提出了脈內調頻脈沖串波形合成寬帶回波、獲得一維高解析度距離像的方法，給出了脈內調頻脈沖串合成孔徑雷達成像的具體步驟。
  17. Because p - sar sensor is playing a more and more important role in applications in both civil and military areas, it has been placed on an important role by scientists in the world. polarimetric sar three - dimensional images technology is a new developing measuring technology

    三維sar成像中的一種最新發展動態是利用極化合成孔徑雷達的二維圖像數據，提取地形方位向坡度信息，從而在極化sar二維成像的基礎上，形成極化sar三維成像。
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