激光測速計 的英文怎麼說
中文拼音 [jīguāngcèsùjì]
激光測速計
英文
laser doppler velocimeter- 激 : Ⅰ動詞1 (水因受到阻礙或震蕩而向上涌) swash; surge; dash 2 (冷水突然刺激身體使得病) fall ill fr...
- 光 : Ⅰ名詞1 (照耀在物體上、使人能看見物體的一種物質) light; ray 2 (景物) scenery 3 (光彩; 榮譽) ...
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 速 : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 激光 : [物理學] laser 激光靶 laser target; 激光報警器 laser avoidance device; 激光玻璃纖維 laser fibre; ...
- 測速 : logging speed
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Study on laser measurement system of bullet muzzle velocity
槍彈初速激光測試系統方案設計The laser radar sub - system determines the heights of the tsp according to the slant height and the oblique angle measured by the laser range finder and the electronic theodolite simultaneously. by lucubrating the motion law of tsp, we decided to compute decent velocities with least - squares procedure & two ranks curve fitting
地面激光雷達跟蹤測量分系統根據測量到的斜距離和俯仰角確定末敏彈傘彈系統的高度,在深入研究末敏彈穩態掃描過程的運動規律后,通過最小二乘法的二階分段曲線擬合,計算出落速。Laser doppler anemometer, laser doppler velocimeter
激光多普勒測速計The laser unit, because of its monochromaticity and small divergency, is used as sensor ’ s light source. devices and chips provided with high - speed responsing and processing capabilities are employed. as a result, the achieved uncertainty of time measuring is 125 ps, demonstrating an accuracy improvement in magnitude of an order
在設計製作中採用了單色性和方向性好的激光作為光源,選取了高速響應和有高速處理能力的一系列器件、晶元,因此時間測量的精度達到了125ps ,比以往的測試方法提高了1個數量級以上,速度測量精度達到掃描速度的0 . 1 % 。According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd : yag激光器的發展狀況、主要特性及其應用,從四能級速率方程出發,推導了ld泵浦nd : yag激光器的閾值、輸出功率和斜效率的表達式,並簡述了激光器的工作原理、結構型式和倍頻方法;其次,以空間相關的速率方程為基礎,提出了ld端面泵浦nd : yag激光器的設計方法,給出了一定泵浦耦合方式下,振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據,以此為依據,設計了自聚焦透鏡耦合小功率ld泵浦nd : yag激光器和透鏡組耦合高功率ld泵浦nd : yag激光器,對激光器的輸出功率和功率穩定性等特性進行了實驗研究;再次,在帶尾纖輸出的高功率ld泵浦nd : yag激光腔內插入一隻空液晶盒,觀察到了激光器以單縱模運轉;最後,根據泵浦光焦斑端面位置對激光輸出功率的影響規律,提出了ld端面泵浦nd : yag激光位移傳感新方法,並進行了理論和實驗研究,研究結果表明:當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時,激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律,測量范圍和靈敏度依賴于泵浦功率,隨著泵浦功率的增加,測量范圍擴大,靈敏度提高,當端面泵浦功率為7 . 24w (最大輸出功率為1 . 926w )時,激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。The results of the experiments indicate that the main performance of the ladar prototype matches the design requirement theoretically. the ladar prototype has many advantages, such as high imaging speed, high image resolution, high ranging precision and high quality intensity image, which can be obtained simultaneously
實驗結果表明,所研製的成像激光雷達的主要性能指標與理論設計基本一致,具有成像速率高、圖像解析度高、測距精度高以及可同時獲得高精度強度圖像等優點。A type of receiver circuit and timing circuit which can be applied in high - speed laser range - finder is discussed in this paper
本論文詳細討論了一種可實現高速激光測距的接收電路和計時電路。Abstract : in this paper, the design of the sense organ of the silicon miniature inertial meter is presented. the approving structure of the sense organ is fulfilled by the fabrication techniques of laser processing and chemical etching, laser fibre optic vibration is used to test the vibration characteristic of the suspensi on beams
文摘:設計了硅微型慣性加速度計的敏感頭並應用激光加工和化學蝕刻相結合的工藝方法製造得到了滿意的結構,應用激光光纖測振儀檢測了懸臂梁振動特性。In this paper, the design of the sense organ of the silicon miniature inertial meter is presented. the approving structure of the sense organ is fulfilled by the fabrication techniques of laser processing and chemical etching, laser fibre optic vibration is used to test the vibration characteristic of the suspensi on beams
設計了硅微型慣性加速度計的敏感頭並應用激光加工和化學蝕刻相結合的工藝方法製造得到了滿意的結構,應用激光光纖測振儀檢測了懸臂梁振動特性。This paper analyses the problem of extinction method, which have been used in ranging capability of impulse laser rangefinders now. then according the extinction method, by computer or quasi - laser and delay simulating space distance technology, realise automatic, fast and non - dismatiement testing of ranging parameters
分析了目前驗收脈沖激光測距機測程指標所採用的方法「消光法」存在的不足,並在「消光法」的基礎上,通過採用計算機技術、準激光技術和延時模擬空間距離的方法,實現了測程指標自動、快速和不解體檢測。Abstract : this paper analyses the problem of extinction method, which have been used in ranging capability of impulse laser rangefinders now. then according the extinction method, by computer or quasi - laser and delay simulating space distance technology, realise automatic, fast and non - dismatiement testing of ranging parameters
文摘:分析了目前驗收脈沖激光測距機測程指標所採用的方法「消光法」存在的不足,並在「消光法」的基礎上,通過採用計算機技術、準激光技術和延時模擬空間距離的方法,實現了測程指標自動、快速和不解體檢測。Laser doppler velocimeters
激光都卜勒測速計By the line s - h sensor mentioned in chapter 3, measurements have been made to a beam path heated by hf laser. by a high speed interferometer, tomographic measurement was made on a air column heated by electric powered wire
用第三章設計的線陣s - h傳感器對hf激光加熱光路進行了測量研究,在此基礎上,用高速干涉儀對電熱絲加熱的空氣柱進行了模擬層析測量研究。The measurement of acceleration is necessary in many fields. a laser accelerometer based on psd is described in this paper
加速度的測量在許多領域都是不可缺少的,本文研究了一種基於psd的激光加速度計。In the hardware solution, a dual - port high speed communication card was designed to resolve the " data " losing " problem in the communication between the lrf and pc
在數據輸入模塊中還介紹了作者為解決兩個激光測距雷達和pc機之間的高速數據通信問題所設計的高速數據通信卡。We focused our discussions on the mechanism of saturation of the wakefield and the electron parametric instabilities which affect the process of the wakefield generation and electrons acceleration. we developed a 2 - dimension distributed parallel pic code under mpi parallel environment and got a good speedup ratio tested on yh - iv and pc computer groups
為了解決研究激光和稀薄等離子體相互作用所需的大量計算,我們研製了21 2d分散式粒子模擬并行程序,在微機群和巨型機yh ? iv對程序并行性能進行了測試得到了較高的加速比。The paper mainly researches the basic work of computer vision controlling the manipulators on the system of harvesting tomatoes that is how to recognize the tomatoes from the complex background and move the video lens towards to the centers of tomatoes, then measure the distance between the lens and tomatoes by laser, and finally control the manipulators to harvest the tomatoes
本論文主要研究計算機視覺控制的機械手系統在番茄收獲系統中的應用,即如何迅速、準確地從復雜背景中識別出番茄,然後移動攝像機鏡頭對準番茄中心,用激光測距的方法測得攝像頭至番茄的距離,從而控制機械手收獲番茄。主要研究番茄和葉子的識別問題。Optical design and analysis of laser screen for projectile velocity measurement
大面積激光測速靶光學系統的設計與分析This follows a daily mail investigation last month which revealed that thousands of motorists could already have been wrongly fined for speeding because of flaws in the hand - held laser guns which raise serious doubts about their accuracy - including one which recorded a wall traveling at 44mph
以下根據每日新聞報上月作出的調查,顯示數以千計的開車人被錯誤的開出超速罰單,由此我們非常懷疑手持激光測速設備的精確性,其中包括記錄下一堵墻以40英里的速度在行駛。The company has equipped with advanced equipment including laser printer, optical image measurement machine, contact - type detecting scanning machine, and laser molding cnc machining center, etc
公司配備了激光抄數機,光學影像量測數機,接觸式探測抄數機,激光快速成型cnc加工中心等設備和最先進的計算機輔助設計系統。分享友人