測距性能 的英文怎麼說

中文拼音 [cèjùxìngnéng]
測距性能 英文
range performance
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 距 : Ⅰ名詞1 （距離） distance 2 （雄雞、雉等的腿的後面突出像腳趾的部分） spur （of a cock etc ）Ⅱ動詞...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 能 : 能名詞（姓氏） a surname
  • 測距 : range [distance] finding; distance measurement; ranging; stadiometry
  1. By using the processing method of sliding time window, the problem of the periodicity range ambiguity is solved. meanwhile, the problem of range ambiguity which is produced because the range of target is biger than the maximum range of radar is also solved by using this method. then, the pulse width parameter which is the most important in the parameters of fmicw is analyzed. the stricter restrict is given to ensure the range spectrum has only one beat frequency after signal processing. at last this thesis introduces the different signal processing methods of fmpcw and fmicw

    同時利用該方法解決了fmpcw信號的由於目標距離超過雷達的最大單值測距范圍而引起的距離模糊問題。然後對fmicw波形參數中最為重要的脈沖寬度進行了分析，給出了更為嚴格的約束條件，保證了信號處理后距離譜峰值的唯一性。最後，分別介紹了fmpcw和fmicw信號的不同處理方式，並對兩者不同的時域濾波性能進行了比較，並對二者的差異進行了分析。
  2. The main work of the first part includes : introducing some methods of underwater sound positioning and analyzing their performance, analyzing the theory of measuring direction and distance of the target by three elements symmetrical and dissymmetrical array, comparing the measuring error of two kinds of array, and giving the theory of the generic arrays and discussing the phase wrapping and the distance wrapping in passive ranging

    對被動測距技術的研究工作主要包括：簡單介紹了水聲定位的幾種方法，並對其性能進行了分析對比，分析了三元對稱陣和非對稱陣測向測距的原理，對兩種陣型的測向測距誤差進行了對比分析，還給出了一般陣型測向測距原理，最後還對被動測向測距中存在的相位模糊和距離模糊問題進行了探討。
  3. ( 2 ) on - line spectral response measurement is used to make a research on the activation process. the on - line measurement results have been analyzed and the influence excised by cs, o activation on the photoemission property of gaas wafers has been revealed. the properties of domestic and foreign nea phocathodes are compared, and the reasons causing the gap between domestic and foreign phocathodes are discussed

    （ 2 ）利用光譜響應在線測試技術研究nea光電陰極的激活工藝，通過對在線測試的光譜響應曲線進行分析、比較和計算，剖析了激活工藝給陰極光電發射性能帶來的影響，並從性能評估的角度，比較了國內外nea光電陰極的性能，分析了它們之間存在差距的原因。
  4. In this dissertation, the location estimation methods for mitigating the influence of the nlos propagation and the location parameters estimation methods for ds - cdma cellular radio systems are studied. furthermore, the influence of the nlos propagation on the performance of radiolocation systems is analyzed. moreover, by using pilot sequences from the base station ( bs ) in wireless cdma cellular networks, the techniques for detecting and locating and tracking for 3 - d moving target are provided

    本論文針對蜂窩網中移動臺定位這一熱點，研究了移動臺定位的非視距影響減輕技術以及適用於ds ? cdma系統的定位參數估計技術，分析了非視距對定位性能的影響，並研究了利用蜂窩網路資源對三維運動目標的檢測、定位與跟蹤技術。
  5. The maximum range is the most important specification for a laser altimeter and 200km is the required level for the spaceborne laser altimeter in the lunar resources survey. in the paper, one kind of method and setting characterizing the laser altimeter ' s performance aiming at the specification of maximum range - noncooperative regulable attenuation was put forward and founded

    中科院知識創新重大方向?月球資源探測衛星激光高度計，要求實現200km的對月測距能力，本文以地面驗證激光高度計最大測程指標為目標，提出並建立一種激光高度計性能驗證方法?非合作目標可調衰減法和裝置。
  6. The results show that the cps signals have the thumbtack - typed ambiguity, no distance and / or speed ambiguity and excellent speed / distance measuring performances. 3. we analyze anti - interference performances of the uniform ppm - ps radar signals and the random ppm - ps radar signals, and make the comparison between them

    研究結果表明隨機脈位調制與隨機二相碼調相復合脈沖串信號具有「圖釘型」的模糊函數，不存在距離速度模糊，具有良好的測距測速性能。
  7. With modern weapon and modern wingmanship being developed, the higher performance of the radar, such as action range, resolution, measure precision and so on, are required

    隨著現代武器和現代飛行技術的發展，對雷達的作用距離、分辨力和測量精度等性能指標提出了越來越高的要求。
  8. Due to the short distance among the planes which fly in a group, the conventional low resolution radar can not distinguish them in both distance and azimuth ? if we use the technology of isar to resolve the difference among doppler frequency of the targets and obtain a fine resolution cross - cross image, we may separate them, but a long time of coherent processing is needed <, for the formation targets, it can be approximately divided to rigid body and nonrigid body, so for the formation targets, that can be regarded as rigid which has a relative position and an identical movement, can be approximately considered as a large target, and be compensated by translational phase with the rule of minimum entropy, but for the most those cannot accord with the approximation of rigid, being the doppler - frequency of the aim is linear changed, by the relax method with short data, increases the resolving performance of multiple target to the aim in the frequency domain, since cross - range resolution is based on the accumulative time, so it is greatly improve the resolution to formation targets by the instant cross - range image which produced by radon - wigner transformation

    低分辨isan成像及干涉技術應用研究一因此直接無法分辨編隊目標的架數，我們借鑒isar的技術，通過較長時間的相干積累，在多普勒頻域上對目標進行分辨。而對于編隊目標，可分為近似剛性的多目標和非剛性的多目標，所以對于可以近似為剛體的編隊目標相對位置固定，運動方式一致，可以近似看作一個大目標，採用最小墑準則對平動相位的進行補償，但是大多數並不滿足剛體近似的編隊目標，由於目標在相干積累時間的多普勒頻率近似呈線性變化，通過對較短數據利用relax的時頻分析方法，提高了頻率域上目標分辨的性能。由於橫向解析度取塊于橫向積累時間，所以利用radnwigner變換得到瞬時的一維橫向距離像大大提高了對編隊目標的分辨，對模擬和實測數據的大量分析結果表明此方法的有效性和可行。
  9. Bgmi roic is a high performance roic with adaptive current gain control and background current suppression. it is very significant for surveying far object and high background applications

    該讀出電路具有自適應增益控制和背景電流抑制功能，是一種高性能的讀出電路，對遠距離探測目標和高背景應用都具有十分重要的意義。
  10. The main contribution of this paper is that it offers the software to analyze the detection performance and the combat efficiency of radar system taking advantage of visual c + + 6. 0. the software has very well graphics visualize output interfaces. the software can be used to expediently compare the detection performance of radar in existence, calculate and compare the max range and the detection precision of different radar under varying complex environment, calculate the radar detection probability and the radar false alarm probability. some new analyzing module can be added in this software easily

    論文的主要貢獻是利用visualc + +設計了「機載火控雷達性能分析與效能評估軟體」 ，該軟體具有良好的人機交互性和圖形化形象化的輸出界面，可以方便的分析對比現有國內外機載雷達系統的檢測性能，對比不同雷達系統在各種復雜環境下的最大發現距離，計算不同雷達系統在各種復雜環境下的測量精度，以及計算雷達的檢測概率和虛警概率等參數，並且可以方便地添加新的分析模塊，進一步增加軟體的功能。
  11. Force measurement in a low speed wind tunnel was conducted to investigate the effects of the height of a distant canard wing on the longitudinal aerodynamic characteristics of a forward - swept configuration

    摘要基於前掠翼鴨式前翼布局的風洞測力實驗，分析了距離主機翼較遠的鴨翼相對于主機翼的高度對布局縱向氣動性能的影響。
  12. 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。
  13. 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。
  14. In order to investigate the unsteady flow frequency domain performances of an axial flow compressor at different mass flow, rotating speed and blade row spacing, plus inlet flow distortion, and considering aerodynamic characteristics and stability of the compressor, the low speed research compressor ( lsc ) at college of energy and power in nuaa is used to carry out the experiment studies. a large amount of test data has been gained through dynamic pressure transducers embedded in the stator blades at the tip, middle and hub section, then fast fourier transform algorithm ( fft ) is applied to calculate the frequency data

    為探討軸流壓氣機在工作流量、工作轉速及動?靜葉排軸向間距變化時的葉片排流場非定常頻譜特性變化規律，並耦合進氣畸變的影響，同時與壓氣機氣動性能和氣動穩定性相關聯，作者利用南京航空航天大學能源與動力學院的低速大尺寸軸流壓氣機（ lsc ）試驗器，採取在靜子葉片表面埋入動態壓力傳感器的實驗方法，對葉尖、葉中和葉根三個截面的動態壓力進行了測量，獲得了大量的可靠的實驗數據。
  15. The results show that fbg sensors have outstanding waterproof capability, high measurement precision, better long - term stability and more remote transmission signal, so fbg sensing technology is a reliant and effectual instrument for under - water structure project monitoring

    開展的光纖光柵應變、溫度傳感器在水下工程領域中較大規模的應用研究結果表明： fbg具有很好的防水性能，測試精度高，長期穩定性好，信號傳輸距離遠，為水下結構的長期監測提供了一種可靠有效的手段。
  16. The ranging performance of radar is based on its performance of echo detection

    雷達對目標回波的檢測能力是雷達測距性能的基礎。
  17. According to the tendency of modern concrete pump deliever with far - distance and high - floor pouring, the market need a measure system provided with good automatic performance and friendly human - machine interface

    現代混凝土泵送技術向遠距離傳輸、高層澆注發展，並日益走向市場化，對測量系統的要求越來越高，不但要求它具備較高的自動化程度及良好的測量性能，還要求友善的人機交互界面。
  18. 2. analyzed, simulated the effect of maximal value estimate method, coherent accumulating on ranging performance

    2 .分析並模擬了頻率估計的最大值估值演算法和相干積累對系統測距性能的提高。
  19. The content of pema affects on interplanar distance of pe / mmt composite. the content of pema increases as the interplanar distance, barrier properties and melting point of composites increased, when the critical content of pema ( wpema = 30 % ) could get exfoliated composites. the interlayer spacing of pe / mmt composites depends on content of mmt, but not the content of mmt increases as the interlayer spacing increases

    同時用x射線衍射（ xrd ）衍射實驗、紅外光譜（ ir ）實驗、差熱分析試驗（ dta ） 、力學性能測試等手段，研究了採用不同的相容劑改善聚乙烯與蒙脫土之間的相容性的情況；相容劑的用量對聚乙烯/蒙脫土復合材料層間距、性能的影響；蒙脫土的含量對pe / mmt對復合體系的層間距影響；以及工藝條件對復合體系的層間距和性能的影響。
  20. On the other hand, we give the condition of correctly solving range ambiguity and performance calculating formula of for stagger frequency difference ; condition of constraint for deciding stagger parameter value ; range " s analysis result for targets with multiple scattering centers or low altitude. this part includes chapter 2, 3, 4, 5

    另外，我們還給出了參差比相測距正確解模糊的條件以及參差測距下的性能公式；提出了決定參差參數取值的約束條件；給出了多散射中心目標和低空目標的多頻連續波測距性能的結論。
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