背景光 的英文怎麼說
中文拼音 [bēijǐngguāng]
背景光
英文
ambient light-
The back light on the light - sensitive surface of the psd is sorted and the method to erase it is discussed
對影響psd光敏面上光點位置變化的背景光進行了分類，並且給出了消除方法。Some by - products of this work can be used as routine tools in the uv laser laboratory. commercial video ccd cameras are used to image uv laser and soft x rays, window glass as a fluorescer is used to indirectly measure the uv laser beam profile with high energy density, and a special glass which permits uv light to pass through while absorbs the visible, is introduced into the uv beam profiling in strong visible stray light environment
實驗中發展了一些測量技術，例如用可見光視頻ccd直接測量紫外激光的光束分佈和激光等離子體產生的x光二維圖象，利用窗玻璃作為熒光體測量能量密度較高的紫外光束分佈，利用可見吸收紫外透射玻璃製成的衰減器測量有嚴重背景光的紫外光束分佈，可以作為實驗室的常規測量工具，並有一定的推廣價值。Relevant theory is derived and explicit conditions for directly determining the isoclinic parameter in the range of [ 0 - 3i / 2 ] are given. a color camera records five isoclinic images coupled with isochromatics from a plane polariscope with five different settings in white light, respectively
其特點是在白光入射下平面偏振儀光學系統中，用彩色數碼相機採集包括背景光強在內的不同偏振場設置下的五幅彩色圖像，通過運算就可以得到[ 0 ? / 2 ]范圍內的等傾角。By calculating parameters including the link length, the azimuth angle, the elevation, the optical power that the inter - satellite optical cdma communication system will receive, the variation range of the azimuth angle and the elevation from the optical antenna of atp are understood well. by analyzing the factors to impact bit - error - rate ( ber ) from the received power, multi - user disturbing, background noise, wavelength, bit rate etc, measures to guarantee high performances of the system are obtained, especially those for smoothing the fluctuation of the received optical power from host platform vibration
分析研究了衛星光cdma通信系統中衛星仰角、方位角和距離，給出了探測器能夠接收到的光功率以及atp子系統捕獲及跟瞄的范圍;對衛星光cdma通信系統性能模型和基於衛星振動系統性能模型的研究，分析了多用戶干擾、接收光功率、背景光噪聲、振動偏差以及碼速率對系統誤碼率的影響，給出了相應的改進措施。The use of interferometer to detect and analyze laser radiation is well known, but when the intense ratio of the laser radiation to the background natural light radiation is too small, the laser radiation cannot be detected. a novel more sensitive method for detect of wideband weak incident laser in strong background noise is introduced in this paper. the optical unit uses two wedge interferometers and two line array detectors. the incoming light radiation is divided into two beams and through the interferometers
在被動激光偵察告警中，對微弱脈沖激光信號的探測是一個難點。當探測距離相當遠或視場內接收的背景光輻射很強時，脈沖激光信號到達探測器的能量很小，會淹沒在強大的背景光信號中而探測不到。本論文提出了一種探測微弱脈沖激光信號的方法，可對強烈背景光中的激光威脅信號進行探測和告警，並給出其波長參數。( 5 ) the intensity and s / b of libs are investigated in detail at the different buffer gas, gas pressure, and laser power. the results show that under the 120 mj laser energy, for ar the best s / b is at 200 torr pressure, but for air at 100 torr and he at 300 torr. duration of atomic spectra in ar is longer than that in air
（ 5 ）實驗測定了不同的緩沖氣體和氣壓以及不同的入射激光脈沖能量對原子譜線強度和背景光的影響，結果顯示在氬氣環境下，當氣壓約為200torr 、激光的能量約為120mj時， libs的s b最大；在空氣和氦氣中獲得最佳s b時的氣壓約分別為100torr和300torr ；原子譜線在氮氣環境中持續的時間要比在空氣中持續的時間長。Almost a stylish western painting feast to our eyes, little by little, the outlook is getting clearer, which is underpinned by the slight rippled candle light
窗外的景緻漸漸清晰，一雙雙眼睛定格了一幅幅西洋畫，水中搖曳的燭光順流而下，成為了畫中微弱的背景光。Designation of drive circuit for ideal lcd ' s background light
背景光源理想驅動電路設計Theory therefore indicates that the dark ages were defined by three distinct temperatures : the spin temperature ( a measure of the relative abundance of atoms with different spin states ) ; the ordinary, kinetic temperature ( a measure of the motions of the atoms ) ; and the radiation temperature ( a measure of the energy of the background photons )
因此理論上，黑暗年代是由三種截然不同的溫度來定義：自旋溫度（不同自旋狀態原子相對數目的度量） 、一般的動力溫度（原子運動的度量）與輻射溫度（背景光子能量的度量） 。Background photon fluctuations
背景光子起伏噪聲The double - frequency laser interferometer belongs to the heterodyne interferometer. it has been proved that this kind of interferometer possesses the advantage of having a higher transform gain, better wave - filter capacity and high spatial resolution. furthermore, this kind of interferometer can filter out background light interference and obtain a measuring signal with high signal / noise ratio
雙頻激光干涉儀是一種外差干涉儀，理論分析證明：外差干涉具有高的轉換增益、良好的濾波性能及優異的空間鑒別能力，能有效地濾除各種背景光干擾，得到信噪比很高的測量信號。The effect of target size on color coding on a lcd under lower ambient illumination with 3100k color temperature
低色溫低強度背景光照射下液晶顯示顏色編碼的實驗研究Backlight doesn ' t come on again to show time after phone locks
鍵盤鎖上后，背景光不再為了顯示時間而亮了。Considering space environment of laser atmospheric communication, the thesis analyses issues of atmosphere turbulance and interference of background light noise during the course of transmission, furthermore, discusses the structure and basic constitute of the laser atmospheric communication system. combining the technical index requirement of the subject, it provides design scheme and circuit of the transmitting and receiving system
論文從激光大氣通信的空間環境出發，對光信號傳輸過程中通道中的大氣湍流和背景光噪聲干擾問題進行了分析，並在此基礎上論述了激光大氣通信系統的結構和基本組成，結合課題的技術指標，給出了發射和接收系統的設計方案及其電路實現。It is a branch subject of the national natural science fund project called the model and emulating about the property of spectrum radiative in sky background. the whole project can be divided into 3 parts : the radiative transfer in atmosphere, the radiative transfer in cloud and the radiative transfer on surface
它是國家自然科學基金- -天空背景光譜輻射特性建模與模擬的一個分支課題，全課題可以分為三個部分研究:大氣中的輻射傳輸，雲層在地對空觀測中的影響以及下墊面在地對空觀測中的影響。Led twinkle light cann produce lighting effection it ' s own and can also serve as a bavk ground for other objects of key attention
燈串本身就可以作為一種照明光同時也可以作為背景光襯托其他中心事物。( 4 ) time resolution property of libs is studied. at the 4us delay, the signal - to - background ratio is more proper
結果表明當延時在4 s時， libs信號強度與背景光的強度比值（ s b ）達到最大。The paper analyzes in detail the mechanics and optics theory. in the light of the characteristic of the intensity modulation optical fiber sensor, the reference - way is presented to compensate the error signals which are caused by the bias light, dark current of photoelectric detector, temperature drift of pre - amplifier
文中詳細分析了這種傳感器的力學和光學工作原理，並且針對所選用的強度調制型光纖傳感器的工作特點，提出採用參考通道補償由於背景光、光電探測器的暗電流、前置放大器溫漂等因素引起的誤差。Two wedge interferometers are designed that the thickness of one is higher than the other. so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift, but the incident incoherent light only result in consistent intensity signal. through a differentiating amplifier, two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals. this method largely improves the system and the ability of detection. the spacing of line fringes is a function of incident laser wavelength, by analyzing, we can extract the wavelength of incident laser. the optical unit analyzing and results also simulated with matlab
當背景光入射時，直接穿過干涉儀，僅發生強度的衰減，在兩個探測平面上產生幅度基本一致的灰度信號，通過差分放大器，相消為零，從而抑制了背景干擾。當激光信號入射，穿過干涉儀時受到調制，在探測平面上產生干涉條紋。通過所設計的存在平均厚度差的雙楔形干涉儀，兩路干涉條紋圖案出現相對移位：在兩個探測平面對應的位置上，一路出現亮紋，另一路出現暗紋。So, mfld provides a new way to obtain optical information for optical chemo - and biosensors. compared with conventional detection methods, in which the detector was placed at the distal end of the fiber, mfld has advantages in much higher singnal - to : noise ( s / n ) ratio and sensitivity, since the analyte signal is measured against a much lower background by placing the detector at the fiber - optic profile instead of the distal end
模式濾光檢測和傳統的檢測方式相比，檢測器的位置由光纖末端改放在光纖側面，獲取光纖側面產生的模式濾光信號，由於光纖側面的背景光遠較光纖末端的出射光背景小，因而較之檢測光纖末端的出射光有高得多的信噪比和靈敏度。分享友人