數字誤差 的英文怎麼說
中文拼音 [shǔzìwùchā]
數字誤差
英文
digital error- 數 : 數副詞(屢次) frequently; repeatedly
- 字 : Ⅰ名詞1 (文字) character; word 2 (字音) pronunciation 3 (字體) form of a written or printed ...
- 誤 : Ⅰ名詞(錯誤) mistake; error Ⅱ動詞1 (弄錯) mistake; misunderstand 2 (耽誤) miss 3 (使受損害...
- 差 : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
- 數字 : 1. (表示數目的文字; 表示數目的符號) figure; digit; numeral; character; numeric character 2. (數量) quantity; amount
- 誤差 : error
-
Applying the information extracted from numerous hydrographic data of field trials collected by h / hcs - 017, the first set of multi - beam swath bathymeter developed in china, a series of mosaic techniques have been carefully studied in this thesis, including digital terrain model building, statistical error analyzing, hydrographic data mosaicking as well as tides correction and projection of the earth coordinates. finally, standard digital sea - charts and three dimensional seafloor images are successfully developed that are consistent with hydrographic surveying principles
本文利用我國第一臺h hcs ? 017型條帶測深儀的測量數據進行拼圖技術的研究,主要研究的內容有:利用分帶原理對深度數據進行潮汐修正,得到瞬時海面的深度數據;對測深數據進行誤差分析處理,去除野值;將多波束數據進行坐標變換及投影轉換后構建數字地理模型,進而根據海道測量規范繪制標準海圖。By changing of the difference of write address and read address, a delayed signal from read port is achieved. the two methods have different idea but reach the same goal and have the properties that are pure digital delay, little error, compendious circuit and maneuverability
兩種方法異曲同工,為純數字延遲,具有抗干擾性強、誤差小、電路簡明,可操作性強等優點,既體現了設計的多樣性,又體現了fpga設計的靈活可編程特性。In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method
在數字式保護中,如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增,本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值,以便在提高采樣率的同時降低噪聲誤差的影響,並將其應用於基於32位浮點dsp的新型變壓器保護裝置。In this thesis, firstly, we put forward a new algorithm of the synchronization of carrier reference phase, that is to use the curve synthesizing with the general digital carrier phase looper to have an estimation on carrier frequency within 10 ms so as to meet the need of meteor burst communication. we have done some simulations to get the performance of carrier frequency estimation using two modulation modes ( 16qam and 4 - qpsk ), and had some test on the carrier phase looper in conditions when using different baud rate transmission and when the baud tuning have windage
我們對兩種正交調制方式( 16qam和4 - qpsk )進行了模擬工作並給出了模擬結果,同時討論了碼元同步定時誤差對鎖相環路工作的影響並根據流星通信中使用變速率傳輸時鎖相環路的載波同步性能進行了測試;然後在基於軟體無線電思想的數字處理平臺(該數字處理平臺實現了中頻數字化)上用dsp軟體完成了載波的相位跟蹤。Firstly introduced the basic theory and method with which the analog signal can be convert to digital form, including sampling theory and course, quantification and quantification error, coding, beside those we discussed some applications of sampling technology, the reason of frequency mixture and the method to eliminate it chapter 4 introduced analog mux - switch, for the reason of simpleness we only introduce it briefly
從第3章開始,對數據採集的基本理論進行討論,首先介紹了模擬信號數字化處理中的基本理論、方法,包括采樣過程、采樣定理、量化與量化誤差、編碼,還討論了幾種采樣技術的應用、頻率混淆產生的原因及消除措施。第4章,介紹了模擬多路開關。The method that measuring horzontal component of the earth magnetic field with digital quantometer is introdnces, the computational formule are given, systematic error are discussed, the advantages of the this method with tangent galvanometer measuring horizontal component of the earth magnetic field are simply expounded
摘要介紹了用數字沖擊電流計測量地磁場水平分量的方法,給出了計算公式,對系統誤差進行了討論,簡述了該方法與用正切電流計法測量地磁場水平分量的優點。On the part of the design of nine - component thrust vector stand, an automatic hydraulic pressure original position calibration system, a scheme of original position calibration, and the great rigidity universal flexible combinatorial underprop are designed. by using the scheme of “ universal flexible combinatorial underprop plus software digital filter ”, the inherent frequency of test stand is improved, and the problem of test stand libration is solved. then, the resolving method of the disturbance between underprops of the moveable frame is proposed, and the disturbance revise equation is deduced
在推力矢量試車臺設計方面,設計了自動液壓原位校準系統、原位校準方案以及大剛度萬向柔性組合支撐;採用「萬向柔性組合支撐+軟體數字濾波」的方案,提高了試車臺動架的固有頻率,解決了試車臺動架的振動問題;提出了動架約束互擾問題的解決方法,推導了互擾修正方程;研究了九分力推力矢量測量誤差分析方法,並計算了推力矢量測量精度。Digital simulation shows that the improved algorithm ' s estimate mean and relative estimate er - ror are better than those of the original unimproved algorithm, so the improved algorithm can be widely used in storage reliability research
數字模擬結果顯示,改進演算法的估計均值和相對估計誤差明顯優于改進前的條件中位數演算法,可廣泛地應用於電子產品的貯存可靠性研究。The error of hall element is analysed and the compensative method is provided ; this paper makes the theoretical analysis of errors producing by the instrument amplifier and a / d converter. we adopt the technology of digital filter and linearization implementing by the neural network method
對霍爾元件的誤差進行分析並給出補償方法;對儀表放大器和a d轉換器引起的誤差進行了理論分析;採用了數字濾波技術和採用神經網路方法實現的非線性校正技術進行軟體補償。Abstract : the error sources of some data acquisition methods are discussed in digital cartography, and these errors are analysed
文摘:討論了數字制圖幾種數據採集方式的誤差來源,並對這些誤差進行了分析評價。The ? 1 word count error exists in nearly all kinds of digital time and frequency measuring instrument and it affects the instrument ' s measuring precision tremendously
在所有的數字式時間及頻率測量設備中,幾乎都存在著1個字的計數誤差。它的存在,極大地影響儀器的測量精度。The difference of two methods is relatively small and data of velocity accord preferably, the least absolute error is about 0. 001m / s and the least relative error is 0. 49 % in no boundary position, absolute error is big in the boundary positions which arouse measurement error
將數值模擬的結果和數字圖像處理的結果相比較分析,發現兩種方法之間的速度差別較小,在非邊界點處兩種方法的速度數據符合相對較好,最小絕對誤差為0 . oolm / s ,最小相對誤差為0 . 49 % 。To contrast with the real clock and find the reason which cause the error and give the arithmetic which can minimize error, then lets the clock meet the need of production
對比實際的時鐘,查找出誤差的來源,並作出調整誤差的方法,使得誤差盡可能地小,使得系統可以達到實際數字鐘的允許誤差范圍內。Several materials with large coefficient of expansion were selected to make packaging components, and it was found that the packaging materials have good temperature sensitivity and compatibility with optical fibers. experimental accuracy and repetition of fbg temperature sensitivity and compensation were discussed. have selected several materials which has bigger coefficient of expansion to do packaging components, have made many temperature experiments, there have not flaws, such as aging, crackle, absciss layer, packaging materials have good temperature sensitivity and compatibility with optical fiber ; have designed the simple and practical packaging components, have performed a serials of experiments about accuracy and repetition of fbg wave - length, have obtained the first step conclusion ; have analyzed the result and made comparison between the result of different experiment, have summarized the best packaging effect and several rules to reduce mistskes
本文所做的主要工作包括以下幾個內容:一、選取了常見的熱膨脹系數大的材料製作封裝元件,經過多次一80到80反復測試,封裝元件沒有出現老化開裂、封裝裂紋、空洞、離層等缺陷,封裝材料具有良好的溫敏穩定性及復用性,與光纖相容性較好;二、對光纖光柵進行簡單、實用的封裝處理,就封裝效果的優劣性、波長測量的準確度、重復性和封裝時產生的波長損失等方面進行了一系列的實驗,得出了初步的結論;三、對溫敏和溫度補償式封裝的實驗數據進行了詳細的分析和對比,從數字上對溫變過程中光纖光柵中心波長的改變及溫變曲線進行了定量的分析,在大量實驗數據分析結果的基礎上,總結出哪種材料封裝效果更好,以及如何有效的減小實驗誤差。When more than 10 6 ( 3, 2 ) parity check codes are used to estimate the snr of awgn channel and rayleigh fading channel, the estimation error is less than 1 %
在bpsk信號通過awgn通道和單徑瑞利通道下使用( 3 , 2 )碼估計,當統計的碼字數達到106以上時,估計誤差不會超過1 % 。Supported by heilongjiang province natural science foundation projects " research on the errors mechanism of time division a. c. power measurement " ( no. e9719 ), " research on theory of analog digital mixed sampling power energy measurement " ( no. e01 - 15 ) and foundation for university key teacher by the ministry of education " the research on the low audio frequency a. c. power measurement smart instrument " ( no. 1087 ), in this dissertation it is made that a systematic and deep study on power measurement model errors and instrument errors about analog sampling, digital sampling and mixed sampling measurement, and fully experiments about mixed sampling measurement
本學位論文在黑龍江省自然科學基金資助項目「時分割交流功率測量原理誤差產生機理的理論研究」 (編號: e9719 ) , 「模擬數字混合採樣功率與電能測量的理論研究」 (編號: e01 - 15 )和教育部高等學校骨幹教師資助計劃項目「中頻電功率測量智能儀器的研製」 (編號: 1087 )的資助下,以電功率模擬采樣測量、數字采樣測量和混合採樣測量方法為對象,對電功率測量的原理誤差和儀器誤差進行了系統和深入的理論研究和有關的實驗研究。Unlike the early stereo film - based recordings, modern techniques are heavily dependent on digital processing, which corrects for camera - projection inaccuracies, resulting in significantly enhanced stereo display
與早期立體電影不同,現代技術強烈地依賴數字處理校正鏡頭誤差,顯著地增強了立體顯示的效果。In order to meet the requirement of phase - error and physical dimension, high - pass / low - pass filter phase shifter and solid - structure are applied in the design of if broad - band five - bit digital phase shifter
考慮對相位誤差和物理尺寸的要求,中頻寬帶五位數字移相器採用高通/低通濾波器形式和立體結構進行設計。It can take advantage of the advancement of hmm and gmm, utilize dynamic programming technique to realize the nonlinear time alignment between speech feature vectors and markov state sequences, use expectation - maximum algorithm to re - estimate the gmm parameters and finally employ levenshtein distance to calculate the word error rate between the recognized and expected results
它將隱markov模型和gaussian混合密度分佈緊密聯系,結合動態規劃演算法對時間序列和markov狀態鏈進行非線性時間對齊,並運用em演算法對gaussian混合模型的參數進行重新估計,識別出來的結果與期望結果採用levenshtein距離進行比較並得出其字誤差率。In this paper, the theories and techniques of data quality control are thoroughly studied by taking pudong construction and management geographic information system ( js - gis ), including error analysis and accuracy evaluation of digitized data, sample tests of housing surveying product, the principle and method of disfigurement measurement of attribute data based on sampling theories, and total quality control techniques of gis data. these methods are implemented in the construction of js - gis. the main contents are as follow : 1
本論文以浦東建設管理地理信息系統( js _ gis )為例對gis數據質量控制的一些具體內容進行了研究,包括數字化數據誤差分析以及精度評定、房產測量成果的抽樣檢驗、屬性數據缺陷率度量的抽樣原理和方法、 gis數據的全面質量控制方法,並將這些方法應用於js _ gis中,主要內容有: 1 、介紹js _ gis的系統組成,對js _ gis中數據的主要構成以及數據採集進行分析。分享友人