遮擋角 的英文怎麼說
中文拼音 [zhēdǎngjiǎo]
遮擋角
英文
angle of cutoff-
The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。Infrared and visible image sequences of vehicles and airplanes are used for tracking experiments under the situation of that the object is partially blocked by a momentary obstacle, or the illumination and contrast changes, or a big change of the scale and orientation of the object is happened
使用紅外和可見光條件下飛機和車輛等圖像序列，在存在部分遮擋、目標和背景亮度變化、較大的目標尺度和角度變化等情況下進行了跟蹤實驗。Space meeting includes radar beam availability distance, the angel scope that radar can observe, the difference because of the earth ' s covering. finally, we analyse the meeting of the target and radar sub - beam
空間交會包括雷達作用距離，雷達可觀測的角度范圍，地球的遮擋而引起的雷達可觀測范圍的改變，最後分析了雷達子波束和目標的交會情況。Abstract : wind tunnel experiments were carried out to investigate the influence of wind direction on the wind pressure of proximite buildings. mean and fluctuating pressure coefficients on a high building, at sixteen different wind incidences and with one and two interfering buildings, were measured in the tests. this paper presents the characteristics of wind pressure on the building, which varies with the incident wind angle and with the numbers of adjacent buildins. due to the variation of wind angle and the interference effects, the complex feature of pressure distributions can be found on the downstream building surfaces for building group arrangement at certain angle of wind attack. some area of the interfered building for such configuration, in comparison with one single building ' s, may undergo very strong positive or negative pressures
文摘:通過風洞實驗研究了風向對兩個和三個鄰近建築風壓分佈的影響特性.實驗結果給出了在不同風向角下，作用於受擾建築上的平均和脈動風壓系數.當受擾建築處于下游位置時，建築之間的干擾效應主要表現為遮擋影響，建築物上的總體風壓系數不是很大，但在建築物表面上有時會產生局部較大的負壓系數.另外，在某些風向角下由於受到上游分離氣流的影響，在下游建築的局部表面又會出現較大正壓.這些結果可供建築布置和結構設計時參考Firstly, forming the whole feather of vehicles by means of region tracking algorithm, then delivering the information to corners so as to build group relationship among corners, and then accomplishing the creation of new objects, secondly, achieving the old object tracking with multiple - dimensioned corner matching, then feeding back all sorts of information of moving corners to region tracking algorithm to promote the separation of " barrier " among objects in order to gain the tracking of the whole motive objects. 3
首先，由區域跟蹤演算法形成車輛整體特徵，並將該信息傳遞給各個角點，促使角點間建立類屬關系，完成新目標的創建；然後，通過多尺度的角點匹配，完成已有目標的跟蹤，再將運動角點的各種信息反傳給區域跟蹤演算法，促進多目標間的「遮擋」分離，完成整體目標的跟蹤，實現穩定、可靠的目標跟蹤。On its third rising only a portion of the drawing - room was disclosed ; the rest being concealed by a screen, hung with some sort of dark and coarse drapery. the marble basin was removed ; in its place stood a deal table and a kitchen chair : these objects were visible by a very dim light proceeding from a horn lantern, the wax candles being all extinguished
第三幕里客廳只露出了部份，其餘部分由一塊粗糙的黑色布幔遮擋著，大理石盆子已被搬走，代之以一張松木桌和一把廚房椅子，借著一盞號角式燈籠的幽暗燈光，這些物品隱約可見，因為蠟燭全都滅了。5. the 3d reconstruction algorithm with constrained triangulation has been tested on both simulate data and real images with satisfactory results. the long image sequence is taken from 360 degrees around the target
採用帶邊緣約束的三角剖分演算法，對模擬數據和存在遮擋的真實圖像序列進行三維重建，這里的長圖像序列是圍繞目標物體一周拍攝得到的。分享友人