頻率靈敏度 的英文怎麼說
中文拼音 [bīnlǜlíngmǐndù]
頻率靈敏度
英文
frequency agility- 頻 : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
- 率 : 率名詞(比值) rate; ratio; proportion
- 靈 : Ⅰ形容詞1 (靈活; 靈巧) quick; clever; bright 2 (靈驗) effective Ⅱ名詞1 (精神; 靈魂) spirit; ...
- 敏 : Ⅰ形容詞(靈敏;敏捷) quick; agile; smart; nimble Ⅱ名詞(姓氏) a surname
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 頻率 : frequency; rate
- 靈敏度 : [電子學] sensitivity; response rate; sensibility; sensitiveness; response; susceptibility; suscep...
- 靈敏 : sensitive; keen; quick; agile; acute
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Intermodulation suppression for fh ( frequency hopping ) receiver is designed by selecting the intermediate frequencies and changing group of filters, local oscillation ( lo ) frequency, bandwidth of lo frequency under the condition that receiver configuration, sensitivity, dynamic range, instantaneous bandwidth and precision of frequency measurement are fixed
摘要針對跳頻接收機的體制和靈敏度、動態范圍、瞬時工作帶寬、測頻精度等設計參數,通過改變預選器組成、本振頻率和本振帶寬,分析接收通道的中頻選取原則,以實現跳頻接收機的互調抑制設計。As an important target of frequency synthesizer design, phase noise determines system ’ s sensitivity and selectivity whose design is being the emphasis as well as nodus at all times
它作為頻率合成器的重要指標,決定了系統的靈敏度和選擇性能,一直是設計者的難點和重點。The limited sensitivity of present pulsar surveys and the greater frequency drift make the more distant pulsars difficult to observe.
目前脈沖星普查的有限探測靈敏度和大的頻率漂移,使我們難以觀測到更遙遠的脈沖星。In light of market risk, there are sensitivity measurement method and volatility measurement method as well as the concepts about risk measurement, such as variance, duration, 3 - coefficient, 5 - coefficient and value at risk. and in light of credit risk, there are accounting - based ratio measurement method and volatility - based measurement method, as well as the related concepts, such as credit rating, z - score, transition matrix, expected default frequency
其中,針對市場風險度量的方法包括靈敏度測量風險方法和波動性測量風險方法,與之相關的風險度量概念有方差、持續期、系數、類系數和在險價值;針對信用風險度量的方法包括基於財務比率的風險測量方法和基於波動性的風險測量方法,與之相關的風險度量概念有信用評級、 z分數、轉換矩陣、違約頻率。Relationship between the gyro ’ s bandwidth and sensitivity and the resonant frequency differential ratio is derived through frequency analysis. the bandwidth of the gyro increases as the resonant frequency differential ratio increases ; but the sensitivity decreases as the resonant frequency differential ratio increases
增大驅動軸和敏感軸之間諧振頻率的頻差,可以增加微陀螺的帶寬,但是降低了微陀螺的靈敏度,這為設計石英音叉結構參數時,確定驅動軸和敏感軸諧振頻率提供了指導依據。Based on the geophone vibration formula, this paper presents the affective factors to the seismic data from high resolution geophone arrays and its main property specifications, such as natural frequency, damping coefficient, sensitivity, harmonic distortion, and alias
為此,從檢波器的振動方程出發,對高解析度地震檢波器性能指標(如自頻率、阻尼系數、靈敏度、諧波失真、假頻等)以及檢波器組合的連接方式對地震資料品質的影響進行了分析。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 。Pressure sensitivity, harmonic frequency and directive property are important indexes to characterize its performances
聲壓靈敏度、諧振頻率和空間指向性是衡量其性能的重要指標。This paper investigates the pressure sensitivity of an interferometric fiber - optic hydrophone element with a concentric mandrel including an enhanced sensitivity layer based on the theory of elastic mechanics and finite element method ( fem ) and then investigates its harmonic frequency and vertical directional property using fem, and verifies all the results derived from theoretic analysis at last
本文分別基於彈性力學的理論和有限元的方法對含彈性增敏層的同軸干涉型光纖水聽器基元的聲壓靈敏度進行研究,並基於有限元的方法對其諧振頻率和垂直指向性進行分析,最後用實驗對各項分析結果進行了驗證。The dynamic equation for analyzing torsional vibration of the vehicle drivetrain is established based on analyzing the jointing process of frictional clutches, and the inherent frequency, the response of torsional vibration and the sensitivity of rigidity parameters to inherent frequency are studied
摘要文章在分析車輛最常用的膜片彈簧摩擦離合器接合過程的基礎上,建立汽車傳動系的扭轉振動的力學分析方程;結合實際車型,分析了車輛的固有頻率、扭振響應、剛度參數對固有頻率的靈敏度。The attenuators and the sensitivity of detectors are calibrated in varied frequencies. the attenuation of the cable is also calibrated
對晶體檢波器在不同頻率下的礦靈敏度進行了測定;對同軸信號線的衰減量瓣行了標定。Finally according to the above mentioned results, two universal ulpa were made and their performance were tested. these results indicated that on the whole, the values of parameters, such as sensitivity of each element, center frequency, relative bandwidth and cross coupling among near elements and so on, and their consistency all meet the ask of technique. therefore, both of transducers performance are favorable
最後根據上述研討結果,製作了兩個通用超產相控線陣換能器,並進行了性能測試,結果表明兩個換能器各陣元靈敏度、中心頻率、相對帶寬、相鄰陣元間串波等參數值及其一致性均基本滿足技術要求,換能器性能良好。This design keep the twice frequency transform and the superheterodyne structure in analog receiver, and use programmable direct digital synthesizer ( dos ) in rf section. use this method, we can not only inherit the advantage of high sensitivity and high selection in traditional design, but also improve the automation of the equipment
該方案保留了原模擬接收機二次變頻的超外差結構,在射頻前端利用了可編程的數字頻率合成器( dds ) ,這樣既繼承了原接收機的高靈敏度,高選擇性的優點,又提高了它的接收機自動化特性。This article according to the acquirement of the system parameters such as : temperature sensitivity 、 angle resolution 、 image forming time etc to design the type and diameter of the antenna ; the receiver type, integral time, rf gain, lpf gain ; the mode of calibration ; the sample frequency and program of the daq ; the scanning time, scan type, etc
本文根據系統溫度靈敏度、角解析度、成像時間等參數要求,對系統天線類型、直徑,接收機類型、積分時間、射頻增益、視頻放大器增益,定標方式,數據採集卡的采樣頻率、編程及驅動裝置的掃描速度、掃描類型等進行了詳細的分析設計。Assisted with the sensitivity of the linear analog circuits, the feasibility of parametric faults detection was analyzed through the maximum fault errors acquired at the sensitive frequencies, a stimulation matrix and its stimulation expression were put forward on the test points information
摘要從線性模擬電路靈敏度的概念入手,分析了通過獲取敏感頻點激勵下的最大故障誤差來檢測電路參數故障的可能性,提出了一種針對測試頻率和測點信息的激勵矩陣。To reduce the number of design variables, the sensitivity of both natural frequency and mode shape vector to component geometry parameters were derived respectively
為優選設計變量,分別推導了固有頻率和振型矢量對其幾何參數的靈敏度公式。When this fault is cutted off and the breaker is reclosed, this scheme ca n ' t start by mistake. the availability of this scheme is proved with matlab test. the single phase high - impedance grounding fault is settled properly
Matlab模擬分析證明了該方案耐受過渡電阻的能力強,在故障切除和重合閘時不會因出現的暫態信號而誤啟動,不受系統振蕩、頻率偏差的影響,克服了常規保護靈敏度不足的缺點,較好地解決了單相高阻接地故障的難題。Chen, t. y., 1987. 05, ” finite element model refinement using modal analysis data, ” ph. d. dissertation, the university of texas at arlington
鄔詩賢、陳定宇、林忠志, 1989 . 06 , 「設計參數對自然振動頻率之影響-頻率靈敏度分析, 」金屬工業中心委?研究計劃報告The results of calculation prove : the new structured coaxial probe is superior to the traditional coaxial probe in both sensitivity and penetrating depth when used to measure the dielectric properties of chemical reactants or layered biological tissues, and the relationship between the measurement sensitivity of this new structured probe and the frequency of electromagnetic wave are obtained, which provides the optimal frequency for the actual application
計算結果表明:在化學反應溶液及生物分層組織介電特性參數的測量中,這種新型的同軸探頭在測量靈敏度及透入深度兩方面都優于傳統的平口同軸探頭。通過計算模擬還得出了這種新型同軸線探頭的測量靈敏度與電磁波頻率的關系,為進一步研究其最佳測試頻率提供了有價值的參考依據。By choosing flood control system of downstream basin of the yellow river as the background, six relatively independent subsystem is established, which includes basic information management, real - time flood forecast, multi - reservoir flood control scheduling, consultation and analysis, scheduling scheme management, frequency analysis, and assist with friendly man - machine conversation to constitutes the yellow river downstream flood control scheduling decision support system, which can satisfy the practicability requirements of decision - making
論文以黃河下游防洪系統為背景,建立包括基本信息管理、短期洪水預報、水庫(群)防洪調度、會商與靈敏度分析、方案管理、水雨情頻率分析等6個相對獨立的子系統,並輔以友好的人機交互界面集成為黃河下游防洪調度決策支持系統,滿足了群決策會商的實用性要求。分享友人