real aperture 中文意思是什麼

real aperture 解釋
實際孔徑，有效孔徑
  • real : adj 1 真實的，真正的 （opp sham ） 實際的，現實的 （ opp ideal） 事實上的，實質上的 （opp nominal...
  • aperture : n. 1. 孔，隙縫。2. （照相機的）光圈；孔徑，口徑。
  1. 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。
  2. The thesis reviews the theory which is the basis of synthetic aperture processing and introduces five algorithms of image reconstruction : the coherent addition provides a good opportunity for the real time sas ; the envelope processing can work when sonar echo returns lack phase coherence ; the i - q processing can reduce the sampling rate ; the broadband and ctfm processing are both aimed to increase the sas mapping rate

    討論了用於重構圖象的五種演算法，包括簡單的可進行實時處理的相關合成法，可以在缺乏相位信息時使用的包絡處理法，可以降低采樣率、減少運算量、存儲量的正交處理法，可以提高聲納運行速度，從而提高成象率的寬帶處理法和ctfm法等五種演算法。
  3. 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。
  4. Ultra windband synthetic aperture radar ( uwb - sar ) has a broad applications because it can produce fine images of concealed targets with the capabilty of penetrating the foliage and the surface of the earth. lt has been an important sign for acquiring high - resolution images of uwb - sar for real time processing, and the efficient imaging algorithm is the pivotal and the fundation

    超寬帶合成孔徑雷達（ uwb - sar ）能夠穿透葉簇和地表實現對隱蔽目標的精細成像，有著廣泛的應用前景，高解析度uwb - sar圖像的實時獲取已成為成像雷達發展的一個重要標志，而高效成像演算法又是它的關鍵和基礎。
  5. Real aperture radar

    真實孔徑雷達
  6. It is used in conventional real aperture radar for improving angle resolution. numerical and experimental results show that by using awsm. the angular resolution is improved by a factor of 1. 8 when signal - to - noise ratio equals to 15db

    實驗結果表明，在15db的信噪比下，採用角度權重方位超分辨技術可以使方位解析度的改善因子達到1 . 8以上。
  7. Two common - used synthetic aperture radar imaging algorithms, range - doppler algorithm and chirp - scaling algorithm, have been analyzed and tested using compute simulation and real synthetic aperture radar data. one key issue of the synthetic aperture radar high resolution imaging is how to obtain sar image of high geometrical resolution

    在此基礎上，討論了合成孔徑雷達距離多普勒成像演算法以及chirp - scaling成像演算法，分析了各自的特點，對兩種成像演算法進行了計算機模擬實驗以及實際數據實驗驗證。
  8. Real - aperture side - looking airborne radar

    實孔徑側視雷達
  9. A two - dimensional microwave imaging system in x band with stepped frequency signal and real aperture antenna is established. two - dimensional super - resolution algorithm is applied in this system

    本文圍繞實孔徑微波成像系統，在提高系統的角度解析度、二維超分辨處理和基於強散射中心分佈的rcs數據壓縮等方面進行了研究。
  10. This dissertation is focused on the study of microwave imaging system with real aperture antenna and its application. significant results of the work include : 1

    對雷達成像的結果的研究，即雷達目標散射中心分佈的研究，也是雷達目標特性建模工作的一個重要部分。
  11. The easy - fold feature on the third row and fold - flat capability for both second and third rows should be very practical and the large hydraulically assisted tailgate with wide aperture makes the big boot area easy to load ( for light shopping, the remote control operated tailgate glass is a real boon, opening without the need to unlock the rest of the vehicle )

    第三排座位可輕易折起，第二排和第三排座位也可水平放倒，很實用.液壓助力的大后風擋有著很寬的孔徑，可輕易裝載大件貨物. （如果裝小件貨物，可以遙控后風擋，無需開啟其它部件）
  12. In this thesis, impsar b - p is focused and modified wi th the considerations of the electromagnetic wave dispersion, synthetic aperture windowing and iq channel realization in real time applications

    在對impsarb - p演算法分析的基礎上，提出了改進演算法以反映電磁傳播的衰減和對合成孔徑域的加權，這在近場應用中是非常重要的。
  13. The demand of autofocus for high resolution real time synthetic aperture radar ( sar ) is very high

    摘要高解析度機載合成孔徑雷達實時成像對自聚焦的要求非常高。
  14. 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

    對于合成孔徑雷達（ sar ） ，運動是它成像的依據，也是問題產生的根源。
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