視距線 的英文怎麼說
中文拼音 [shìjùxiàn]
視距線
英文
stadia lines-
Range estimates from the foretop would not have been very useful at that time, especially given the decimated gun crews and difficulties relaying data. ( flags were probably used from the foretop to the gun )
這種測距方式並不精準，特別是在船身劇烈搖晃或者是火炮煙硝阻礙觀測視線的時候。 ）Because of its special antenna structure, testing the antenna ’ s performance is necessary to prove its theory. auto measurement system of cfa array annates can measure the annates ’ s amplitude - phase character and resistance matrix quickly and effectively
艦載超視距雷達使用交叉場天線cfa （ crossedfieldantenna ）作為陣列天線陣元，由於其特殊的天線結構，對其特性的理論研究也需要測量數據來驗證。In the application of mini - micro - robot visual perception, there is a need for fish - eye lenses for capturing wide field of view for navigation. though fish - eye lenses provide a wide field of view ( 180 ), they introduce significant distortion in images and the acquired images are quite warped, which makes conventional camera calibration algorithms no longer work well. this paper presents an accurate calibration framework for fish - eye lens ( a high distortion lens ) camera stereo vision system. the accurate calibration model is formulated with radial distortion, decentering distortion and thin prism distortion based on the fisheye deformation model. using fish - eye and non - linear camera model, the author employs levenberg - marquardt method to realize precise non - linear calibration for wide - view - scene dense depth image recovery
魚眼鏡頭成像立體視覺系統在微小型機器人視覺導航和近距離大視場物體識別與定位中有著廣泛的應用.盡管魚眼鏡頭攝像機具有很大的視場角（接近180 ） ，但同時也引入嚴重的圖像變形，常規的攝像機標定方法無法使用.該文提出一種標定魚眼鏡頭攝像機立體視覺系統的方法.在魚眼鏡頭變形模型的基礎上，通過考慮魚眼鏡頭成像的徑向變形、偏心變形和薄棱鏡變形，建立了魚眼鏡頭成像的精確成像模型，然後，利用非線性迭代演算法，精確求解攝像機外部參數、內部參數.實驗表明，使用該方法得到的立體視覺系統參數滿足精確恢復大場景稠密深度圖的要求The xm29 was intended to be a shoulder - fired, semi - automatic grenade launcher in 20 mm calibre and to incorporate a compact, lightweight 5. 56 mm rifle as a back - up weapon
這包括一個與視線關聯確保用戶將武器正確瞄準目標並跟彈道計算機配對的激光測距儀。The principle 、 configuration and characteristics of the measure and control system in the grinding circuit with hydrocyclone classifier are introduced. the function and application result of the measure and control system are discussed with practical application
本文介紹了井下進行采區控制導線的測量時，在前、后視點懸掛棱鏡進行光電測距的方法及應用情況。Based on the different direction of view and water and relation of water and land, the author divided lake landscapes into vertical single - water landscape, parallel poly - water landscape, vertical poly - water landscape, parallel single - water landscape and bird ' s - eye view landscape. addition to, the author discussed the effect of distance between a given vantage point and opposite shore to plant landscape ' s visual character, then give the key point of plant designing in different lake landscape mode and researched the effect to visual landscape caused by all kinds of plant design method from the plant on land and water
確定了由於視線與水體的方向以及水陸關系的不同而形成的單水體垂直景觀、多水體垂直景觀、單水體平行景觀、多水體平行景觀和鳥瞰景觀等5種景觀模式，並在此基礎上進一步論述了視點與水體對岸的景觀間距對于植物景觀觀視特點的影響，提出了不同湖泊景觀模式中植物配置的重點。The thesis firstly analyzes the signal form of frequency modulated interrupted continuous waveform ( fmicw ) in theory, studies the principles of detecting range and velocity for fmcw, and further discusses the essential processing methods of the fmicw signal form, including the range transform processing method based on the strict corresponding relation between time and frequency domain, the velocity doppler transform, the digital beam forming
本文首先從理論上分析了在高頻地波超視距雷達所用的線性調頻斷續波信號的形式，研究了fmcw雷達測距測速原理，並深入地探討了fmicw信號的基本處理方法以及具體的演算法，主要包括距離變換中採用的時間波門相關處理方法，速度多普勒變換，數字波束形成。In order to hold the performance of the antenna array of hf radar the length of antenna array is also very long
高頻超視距雷達工作在短波波段，為了保持一定的天線陣性能，天線陣尺寸通常也較大。To apply neural networks to the simulation of ship maneuvering motion, an nnrm ( neural network recursive model ) is designed and used to simulate a serial full - scale tests conducted in yangtze river and the comparison between simulated results and the measured ones is satisfactory. ship trajectory tracking is a well - known maneuvering problem with an increasing practical and theoretical interest. but the real - world tracking applications encounter a number of difficulties caused by the presence of different kinds of uncertainty due to the unknown or not precisely known system model and environmental effects
本文利用智能控制技術的優越性，嘗試將智能化控制技術用於船舶操縱運動模擬，初步探索了將現代控制理論和智能技術融入船舶操縱預報、模擬的研究方法，提出了用於船舶操縱運動模擬的線性神經網路（ lnn ） 、神經網路遞推模型（ nnrm ）和nnrm 、交錯航跡距離（ cte ）和視距（ los ）混合控制器模型三種控制模型：並將控制模型的理論研究應用到實船試驗數據分析、計算，將模擬結果與實際的試驗結果作了比較。Because of radio wave propagating along the ducts with enhanced fields on the order of the free - space field, the problems of the co - channel interference are more complicate for communication systems with the results of intersystem interference and the formation of other system, and therefore affecting the determination of the coordination distances or the optimization of the distribution and separation of delay, and for surveillance system such as radar system the problems can be radar holes or the extensions of detect range
對于通信電路，它使系統間的相互干擾問題變得復雜，既可能幹擾其他系統又可能形成另外的系統，從而影響系統的有關參數如中繼電路的最佳組合（分佈、間隔）和協調距離，對于探測系統產生的則是雷達空洞、超視距探測等問題。這些問題對相關無線電系統特別是軍事應用系統可能是致命的，因而以波導傳播為代表的反常傳播特性研究受到極大重視。According to the particularity of the hfsw oht by ship, we have done research on a special electrically small antenna, crossed - field - antenna ( cfa )
由於高頻地波艦載超視距雷達對天線有小型化、適裝性等各方面的特殊要求，我們對新型電小天線?交叉場天線cfa （ crossedfieldantenna ）進行研究。Over - the - horizon radar ’ s beam - frequency is high frequency band and its wavelength is so long that the annate ’ s characters are very complicated when applicated on the ship. the character of coupling between cells and the environment must be measured to compensate in the radar signal process step. the ship - based over - the - horizon radar uses cfa ( crossed field antenna ) as array antennas ’ cell
艦載超視距雷達使用高頻信號作為發射頻率，其波長較長，在艦船有限的空間內，陣列天線的陣元之間的耦合與陣元與背景之間耦合都十分嚴重，必須測量陣列天線通道的幅相一致性，作為雷達信號處理的補償參數。Hold the chart at a reading distance of 12 inches or 30 cm ; adequate and even lighting is important
把方格表放在視平線30厘米之距離，光線要充足及平均。Bertrand curves with broad sense can be regarded as the equidistants of special line, which form the family of bertrand curve with broad sense, and be convenient to the choice
廣義白川德曲線可視為空間曲線的等距線，形成了廣義白川德曲線匯，便於工程應用的選擇。Ruilan s bws3500 broadband wireless access system is capable of solving effectively the fundamental problem of selective frequency attenuation caused by multi - path interference. therefore, it is capable of providing generalized access ( non line - of - sight or quasi line - of - sight transmission )
瑞瀾公司的bws3500寬帶無線接入系統可有效地解決多徑干擾引起的「選頻衰落」這一根本性問題，因此能夠實現普遍化的接入（非視距或準視距傳輸） 。Forth, this thesis also had made a preliminary discussion on the integrated guidance system of air - to - air missile beyond visual range air combat and made deep research on the midcourse guidance stage, thus we obtained an extremely useful conclusion.
本文還對空空導彈超視距攻擊的復合制導體製做了一個初步的探討，並對其中的中制導階段進行了深入研究，得到了一個十分有用的結論:即中制導階段導彈發動機的最優推力方向實際上應該是關于時間的線性函數。( 7 ) the warships bearings - only passive location system and its engineering implement is researched, the operation flow and methods of over - the - horizon concealed missile attack using single and multi - warship bearings - only passive location system is presented. the direction finding data calibration and pretreatment based on uniform speed straight movement are also studied
7進行了艦艇純方位無源定位系統及其工程實現方法的研究，給出了應用單艦和多艦純方位無源定位系統引導反艦導彈實施超視距隱蔽攻擊的方法和作戰流程，研究了基於勻速直線運動的測向數據校準處理方法和測向方位角數據的預處理方法。The system performed as obtaining the real - time navigation information, adjusting the on - line control parameters, programming flight path, storing and analyzing data, which insured the realization of long distance flight
系統實現了導航參數實時獲取、飛行控制參數在線調整、航跡規劃與回顯、數據存儲及分析等功能，並為超視距飛行提供了有利保障。Frequency sharing criteria between line - of - sight radio - relay systems and space radiocommunication systems
視距微波接力通信系統與空間無線電通信系統共用頻率的技術要求Interoperability and performance standards for digital los microwave radio equipment
數字視距微波無線電設備的互通性和性能要求分享友人