測距精度 的英文怎麼說

中文拼音 [cèjùjīngdù]
測距精度 英文
distance accuracy
  • 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...
  • 精 : Ⅰ形容詞1 （經過提煉或挑選的） refined; picked; choice 2 （完美;最好） perfect; excellent 3 （細）...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 測距 : range [distance] finding; distance measurement; ranging; stadiometry
  • 精度 : precision; accuracy; degree of accuracy; precision accuracy; trueness
  1. Ftt makes the frequency sampled at a same frequency interval on unit circle, and the frequency interval limits the practical range - precision of the radar, and makes range precision at an equivalent level with range - resolution

    由於fft的實質是頻率在單位圓上的等間隔采樣，其采樣間隔限制了雷達的實際測距精度，使得其測距精度與其距離分辨力處于同一量級。
  2. The scheme is designed based on these researches. for traditional laser rang finders, most of them use heterodyne method as the phase shift measurement. the advantage of heterodyne method is the high measurement accuracy, but its disadvantage is the low measurement velocity

    傳統的相位激光測距大部分都採用差頻數字測相，差頻測相的優點在於由於頻率的降低，這樣必然意味著測距精度的提高，但其缺點是測距速率低。
  3. 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。
  4. 7 in order to improvement the performance of the whole system and reduce the cost, a new signal processor is given, which based on the new pulse count method brought forward by the author

    從系統聯調的測試結果可以看出，利用自適應檢波電路，可以大大改善基於脈沖計數新方法的雷達信號處理機的性能，使得雷達系統的測距精度大大提高。
  5. Because affected by the type of lines, fault resistance and two sides systems ， fault analytical location has lower precision, but it has no dead line and is more better accurate if the fault location is close to the line terminal

    故障分析法由於受線路類型、過渡電阻、兩端系統的影響測距精度較差，但故障分析法不存在測距死區，尤其對近區故障的測距較為準確。
  6. Analysis of ambiguity - function of lfmcw radar, including symmetrical triangular lfmcw signal and multiple periods ’ symmetrical triangular lfmcw signal. 3. this dissertation advances new theories of lfmcw radar signal detection and estimation, including method for acceleration and velocity estimation based on polynomial phase transform ; method for multi - target acceleration and velocity estimation based on modification polynomial phase transform

    包括基於多項相位變換的lfmcw雷達速度和加速度估計方法;基於修正多項相位變換的多目標lfmcw雷達速度和加速度估計方法;基於一般高斯噪聲環境下的lfmcw雷達速度和加速度聯合估計方法;另外提出了基於頻域增采樣內插方法以提高lfmcw雷達測距精度。
  7. The main limitation of a intensity - modulated - continuous - wave laser rangefinder is the leakage distortion created by the high frequency current source which modulates the laser diode

    在調強連續波激光測距系統中，調制激光器的高頻電流源產生的泄漏干擾是影響測距精度的主要因素。
  8. In this paper we made a systemic analysis and study of the accurate orientation technology in the process of helicopter landing - photogrammetry, made the model of using double ccd to measure the exact position of helicopter based four latent points photogrammetry, educed formula about beaconing position, analyzed the computing error, and particularly computed the information of beaconing position of the helicopter ' s landing by experiment emulation. in the result, the error between a computed value and a measurement value was less than 5 centimeters

    本文對直升機著艦精確定位技術中的攝影測量演算法進行了系統分析和深入研究，在四特徵點測量演算法基礎上建立了雙ccd攝影測量直升機精確位置坐標的數學模型，進一步從各個影響演算法測距精度的方面討論了計算誤差，推導出測量信標坐標位置的計算公式，並對利用雙攝影測量演算法計算直升機著艦掛鉤位置的正確性及準確性進行了模擬實驗，得到的演算法計算值和實驗測量值之間的誤差在5cm以內。
  9. The results of simulation show that the two algorithms are dependable and high precision, almost without any alteration when fault type, transition resistance and system parameter change

    模擬結果表明，本文提出的兩種雙端故障測距新演算法具有可靠性高、測距精度高的特點，完全不受故障類型、過渡電阻和系統參數的影響。
  10. In the first part of this paper, the theory of laser range and dds technology was introduced, the factors of influencing range precision were also analysed. at the same time, put forward in the paper, with using the fpga embedded technology, the wideband and high resolution sin modulating signals can be generated easily, then analysed the noise of the dds ; in the second part, the theory of phase measurement based on fft was analysed. in the phase range system, by using the fft operation, the resolution and sensibility of phase measurement can be enhanced ; then some circuits were designed and come true, also simulated and validated ; in last part, the improvement of the phase range system was brought forward, summarized and expected

    論文首先闡述了激光測距和調制信號源的基本原理，分析了影響測距精度的因素，指出應用dds技術可以實現寬帶、高精度的調制信號輸出，說明了引起dds輸出信號雜散的原因和解決的辦法;同時分析了應用fft運算實現信號相位提取的基本原理及設計方法，採用這種檢相技術，可以極大地提高測相精度與靈敏度;然後提出了基於fpga嵌入式系統的相位式激光測距機的整體設計，並就各部分進行了詳細的分析與設計;接著介紹了激光測距系統的外圍電路和基於quartusii集成軟體平臺的部分硬體電路的設計，並對其中的設計進行了模擬和驗證;最後總結提出了對系統今後的進一步改進和完善的思路。
  11. Various technical measures are adopted to make sure the accuracy of the laser ranging and the requirement of the high velocity of the laser ranging is satisfied. so the real - time measurement of the dynamic target is satisfied by using this method

    該方法可以彌補現有一般相位激光測距機無法克服的缺陷，既可以保證一定的測距精度，又可以提高測距速率，從而可以對動態目標進行實時測量。
  12. Compared with conventional methods, the proposed method is not disturbed by reflected waves from tee joints or other resistance discontinuities, and is not influenced by fault type, and can recognize the reflected wave from the fault point even when the fault point is near to the measuring terminal ( so - called dead - zone ), and simultaneously, the method reduces the influence of wave speed uncertainty

    與傳統的行波測距方法相比，這種方法不受電纜分支接頭或其他阻抗不匹配點反射波的干擾，不受故障類型的影響，在近區也不存在無法識別反射波的問題，同時也減少了波速不確定性對測距精度的影響。
  13. According to the need of task, it is stated in this paper that how to program cpld with vhdl, how to design and make the ranging circuit of three millimeter pulsed radar

    根據課題的需要，本文用vhdl語言對cpld編程，設計並製作了一個用於三毫米脈沖雷達的測距電路，實現了減小體積和提高測距精度的目的。
  14. To ensure the precision of distance measuring, the high - speed laser driving circuit and the detect - amplifying circuit constituted by two class high - speed operational amplifiers are used in auto adaptive cruise - control system, and the laser flying time is measured by a sixteen bit ' s binary counter, whose counting frequency is 100 megahertz

    為保障測距精度，裝置採用高速激光器驅動電路和由兩級高速運算放大器構成的探測放大電路，並用一個計數脈沖頻率為100mhz的16位二進制計數器完成激光收發間隔時間的測量。
  15. Owing to temperature having great effect, the variation of temperature is a important factor that affects the measurement precision

    ?由於溫度對超聲速度有較大的影響，因而，溫度的變化是影響超聲測距精度的一大因素。
  16. In order to improve the ranging accuracy of a lidar, the effect of amplitude and width of the echo signal on the ranging accuracy of a lidar with bell - type laser pulses in temporal domain and gaussian pulses in spatial domain, was studied under the condition of constant - voltage - amplitude discrimination

    摘要為了提高脈沖激光雷達的測距精度，研究了光束在空域為高斯光束、時域為鐘型脈沖的激光雷達在恆電壓幅度鑒別模式下，回波信號幅度變化和寬度變化對測距精度的影響。
  17. To solve this problem, quick range measurement technology was researched based on the method of propagation delay and working principle of cpld. a time measurement circuit with an accuracy of ? 0. 2m was designed and accomplished. it could finish the whole measurement process in 80ns after the bounced pulse was received

    針對該問題，基於傳遞延時插入法和cpld的工作原理，對快速測距技術進行了研究，研製了一種能實現收到回波脈沖后80ns內完成測距，測距精度0 . 2m的計時電路，並將該電路集成於一片可編程邏輯器件中，減小了電路面積和功耗，增強了抗干擾能力。
  18. In this thesis, based on this kind of application, we made theoretical analysis and engineering practice on high - precision lfmcw and its signal processing millimeter wave broadband lfmcw radar has quite high theoretical range - precision and distance resolution, however, for the real radar system, the nonideal parameter of its transmitting signal, such as power fluctuation and the nonlinearity in frequency sweep, will result in the decreasing of the practical rang - precision and the distance resolution of radar

    本文基於這一應用對高精度lfmcw測距雷達及其信號處理進行了理論分析和工程實踐。毫米波寬帶lfmcw雷達具有很高的理論測距精度和距離分辨力，但對于實際的雷達系統，其發射信號的非理想參數-掃頻功率起伏和掃頻非線性，將使得雷達的實際測距精度和距離分辨力下降。
  19. The factors include ultrasonic wave frequence, condition temperature, ultrasonic converter instrinisic system error, hareware extended time, electricity noise and sonic noise in the spot, city power defmcient pressure and exceeded pressure, city power peak and pour. we adopt the following compensation schemes of error in the system. about ultrasonic wave frequence ' s effect to measurement precision, we can choose appropriate frequence according to the measured distance

    在空氣和液壓缸中影響測距精度的主要因素包括：超聲波的頻率、環境溫度、超聲換能器本身的系統誤差（即探頭固定誤差） 、硬體時間延遲、工作現場的電噪聲和聲噪聲、市電的過壓、介壓噪聲以及市電的尖峰和浪涌噪聲，在本系統中採取了以下幾種誤差的補償方案： ?對于超聲波的頻率對測量精度的影響，只能根據測距的距離選擇合適的超聲頻率。
  20. Main contents included are : 1. analyzed, simulated and validated the effect of power fluctuation and the nonlinearity in frequency sweep on radar practical ranging precision, and the validating method of nonlinearity in frequency sweep

    主要內容為: 1 .分析、模擬並驗證了掃頻非線性對雷達實際測距精度的影響、掃頻非線性的校正方法。
分享友人
分享到 Line

分享到臉書