resolution in azimuth 中文意思是什麼

resolution in azimuth 解釋
方位分辨力
  • resolution : n 1 決心，果斷；堅定，剛毅。2 （議會等的）決定，決議（案）；【法律】〈罕用語〉判決；（疑問等的）...
  • in : adv 1 朝里，向內，在內。 A coat with a furry side in有皮裡子的外衣。 Come in please 請進來。 The ...
  • azimuth : n. 1. 方位（角）。2. 【天文學】地平經度。
  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. Due to the short distance among the planes which fly in a group, the conventional low resolution radar can not distinguish them in both distance and azimuth ? if we use the technology of isar to resolve the difference among doppler frequency of the targets and obtain a fine resolution cross - cross image, we may separate them, but a long time of coherent processing is needed <, for the formation targets, it can be approximately divided to rigid body and nonrigid body, so for the formation targets, that can be regarded as rigid which has a relative position and an identical movement, can be approximately considered as a large target, and be compensated by translational phase with the rule of minimum entropy, but for the most those cannot accord with the approximation of rigid, being the doppler - frequency of the aim is linear changed, by the relax method with short data, increases the resolving performance of multiple target to the aim in the frequency domain, since cross - range resolution is based on the accumulative time, so it is greatly improve the resolution to formation targets by the instant cross - range image which produced by radon - wigner transformation

    低分辨isan成像及干涉技術應用研究一因此直接無法分辨編隊目標的架數，我們借鑒isar的技術，通過較長時間的相干積累，在多普勒頻域上對目標進行分辨。而對于編隊目標，可分為近似剛性的多目標和非剛性的多目標，所以對于可以近似為剛體的編隊目標相對位置固定，運動方式一致，可以近似看作一個大目標，採用最小墑準則對平動相位的進行補償，但是大多數並不滿足剛體近似的編隊目標，由於目標在相干積累時間的多普勒頻率近似呈線性變化，通過對較短數據利用relax的時頻分析方法，提高了頻率域上目標分辨的性能。由於橫向解析度取塊于橫向積累時間，所以利用radnwigner變換得到瞬時的一維橫向距離像大大提高了對編隊目標的分辨，對模擬和實測數據的大量分析結果表明此方法的有效性和可行。
  3. Its high resolution in range is fulfilled by using pulse compression method. its high resolution in azimuth is achieved by utilizing the doppler information among the signals received by sar at different locations. hence, the acquired image of the targets is of very high resolution

    它採用距離向的脈沖壓縮技術和方位向不同位置上接收到的脈沖間的多普勒信息來獲得兩維的高解析度，從而得到高解析度的目標圖像。
  4. By computing the between two resolution units, we can estimate terrain azimuthal slopes and derive estimate of terrain elevation. the terrain contour is determined uniquely by ay / from azimuth slop on range gates. american began to study p - sar three - dimensional images technology in 1990s

    Schuler已經證明，對於一個均勻分佈場景， sar圖像上兩個相鄰分辨單元的極化橢圓方向角偏移量，與地形方位向坡度的對應關系是線性唯一的，地形方位向的傾斜度可以通過解唯一地被測定。
  5. Firstly, the principle of high resolution sar and theoretical imaging model were concisely introduced. pulse compression for line frequency modulation pulse signal, resolution of range direction and azimuth direction, and doppler history were discussed subsequently. in accordance with sar signal processing, range immigration was also involved

    本文首先分析了合成孔徑雷達高分辯力成像機理和sar成像理論模型，討論了線性調頻脈沖信號的匹配濾波（脈沖壓縮） 、 sar距離特性、方位特性和多普勒歷史，同時針對sar成像信號處理，分析了成像處理的基本原理和成像處理中的距離遷移校正等關鍵問題。
  6. In the paper, the gpr system developed by us employs several optimization techniques to enhance the system performances, including antenna, sampling - hold circuit, orientation wheel, function of system software, multithreading, and signal processing algorithms. as the result the system works more well with these techniques, and its azimuth and distance resolution of 10 cm has been achieved with detection depth of more than 50 cm. the main contents of this dissertation are summarized as following : 1

    本文根據探地雷達系統工作原理，在電子科技大學探地雷達系統樣機研製的基礎上採用了各種有效的優化技術，包括探測前端、采樣保持電路的優化，定位輪、目標定位、多線程技術的應用，數據採集處理和控制軟體功能的拓展、各種有效的信號預處理演算法的應用等，顯著提高了系統的探測性能和增強了探測效果，使得系統方位、距離解析度均達到了10cm ，探測深度大於50cm ，其性能指標達到國外先進水平，為進一步的實用化奠定了重要的基礎。
  7. Synthetic aperture radar ( sar ) is an active microwave remote sensor, which has the high azimuth resolution by using the theorem of synthetic aperture. because of its widely application in military and civilian synthetic aperture radar has received more and more recognition

    合成孔徑雷達是主動式微波成像雷達，是利用信號處理技術以小的真實孔徑天線達到高解析度成像的雷達系統，由於其在民用和軍事方面的應用，越來越受到廣泛的關注。
  8. With the development of sar imaging technique and the improvement of sar imaging quality, high range and azimuth resolution has come true. as a result, sar has been an important tool for scientific research and remote sensing. it will take on a supreme future in both military and civil

    隨著sar成像處理技術的發展，其成像質量不斷提高，它成為當今高科技條件下一種不可取代的探測、偵察手段，在軍事、經濟和科學研究等方面都有重大價值和廣泛應用前景。
  9. A important conclusion is verified from these analysis that although the azimuth resolution of sar radar is theoretically not connected with parameters such as radar range and center frequency, in fact, on the condition of same resolution, when the range becomes further and center frequency become lower, the requirement for the radar power gain production, signal processing and precision of ins will be higher, therefore the imaging will become more difficult

    同時也證明了一個重要的結論：從理論上講，合成孔徑成像的方位解析度與作用距離、雷達工作頻率等參數無關，但實際上，在解析度保持不變的情況下，隨著作用距離的提高，工作頻率的下降，對雷達的功率孔徑積、信號處理以及慣導精度的要求會越來越高，從而成像也會變得越來越困難。
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