波束孔徑 的英文怎麼說
中文拼音 [bōshùkǒngjìng]
波束孔徑
英文
beam aperture-
A conc1usion can be drawn that these algorithms has better preci si on and fitting for the multi - - beam swath bathymeter system better on the condition of 1arge beam ang1e, and can improve the precision of edge beams in non - - specu1ar seabed region
證明bdi和分裂孔徑相關法可以精確地對海底回波信號進行回波時延估計和方向估計，可提高非鏡向海底區域的邊緣波束的測量精度。Phase array radar can scan beams fast by controlling the phase of radiator elements in the antenna aperture surface, which shows many excellences such as agility, change celerity and multifunction. therefore, phase array radar is fit for the necessity of combat readiness
這種雷達通過電的方式控制天線孔徑面上各輻射單元的相位變化，以實現波束的快速掃描，使其具有靈活、變化快速、多功能等優點，適應戰備需要。The position and size of the monochromator, focusing curvature radii and tilting angles of the germanium focusing monochromator under different different take - off angle, size and divergency of the second collimator and intensity loss due to the use of it were determined. the neutron flux at different wavelength, under different reflection and take - off angle of the monochromator and divergency of the first collimator, were given. the simulation on the aperture used for limiting beam size in front of the sample showed that, smaller the size of the aperture and further the distance from the aperture to the sample, greater the loss of the intensity and more serious the spread of the beam along vertical direction at the sample position which makes the practical sampling volume greater than expected
用蒙特卡羅模擬方法對中子應力衍射譜儀的設計方案進行了優化研究，提出了一系列可供參考的數據：確定了單色器的位置、尺寸、垂直聚焦單色器在不同起飛角下的聚焦曲率半徑和傾角；討論了第二準直器的尺寸和發散，以及使用第二準直器造成的強度損失；給出了在不同單色器反射面、起飛角、中子波長和第一準直器發散度的情況下樣品處的中子注量率，以及多種組合情況下譜儀的解析度曲線；對限束方孔的尺寸、距離樣品遠近對強度損失和測量中的影響做了深入研究。In airborne synthetic aperture radar ( sar ), antenna stabilization platform is used to isolate antenna pointing, which is stabilized through controlling the platform axis ' rotation, from the vehicle ' s varying attitude and dynamical vibration
摘要機載合成孔徑雷達中，天線穩定平臺用於隔離載機的姿態變化和機械振動對天線指向的影響，並通過伺服系統控制平臺支承軸的轉動穩定波束指向。In this paper, we use fft beam - - form technique to increase the number of beams and bearing deviation indicator ( bdi ) and sp1 it - - aperture corre1ation a1gorithms are used to estimate the time of arrival ( t0a ) and direction of arriva1 ( d0a )
本文在分析借鑒國外資料的基礎上，研究了利用fft波束形成技術來增加波束形成數目，並應用bdi演算法和分裂孔徑相關法來完成對海底回波信號的時間和方向的聯合估計等相關技術對海試數據進行處理。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。And we simulate the thing by different spatial frequency hartmann - shack wavefront sensor which is used in detecting the far field of laser beam, and we get the result that if magnitude of wave aberration is lower the dynamic range of sub - aperture of wavefront sensor, the more the spatial frequency of hartmann - shack wavefront sensor is, the more the accuracy of hartmann - shack wavefront sensor in detecting high frequency aberration is
並且波前像差在hartmann - shack波前傳感器子孔徑動態范圍之內，空間解析度高的hartmann - shack波前傳感器對高階像差波前探測時，其光束質量診斷精度高於空間解析度低的hartmann - shack波前傳感器的光束質量診斷精度。A collinear acoustooptic - deflector of pronton - exchanged linbo3 channel wave - guide is studied. the theoretical analysis, structure design and device fabrication of linbo3 pronton - exchanged acoustooptic wave - guided deflector have been finished in this thesis. the width of wave - guide, the width, spacing, effective aperture and width of electrode of interdigital transduces have been theoretically analyzed and designed
本論文研究了一種質子交換linbo3溝道波導共線式聲光偏轉器，其特點是利用了溝道波導的橫向約束，限制了聲波的發散和衍射效應，使得窄孔徑電極結構得以實現，從而增加了功率密度，使總的聲場驅動功率降低。Synthesis of shaped beam antennas for airborne sar based on genetic algorithm and particle swarm optimization
基於遺傳演算法與粒子群優化法的機載合成孔徑雷達天線賦形波束綜合分享友人