采樣地點 的英文怎麼說
中文拼音 [cǎiyàngdediǎn]
采樣地點
英文
position of sampling-
This article has studied the deficiency and shortcoming of various kinds of methods of the parameter measurement of transmission line at present, proposed the measurement under operation on the basis of gps, researched gps application way and error that may appear in the power system synchronal sampling, put forward the parameter computing technology based on the information of both sides of transmission line, which solved some problems that exist in the parameter measurement, especially the problem that exist in the zero - sequence parameter measurement of transmission line with mutual inductance
本文研究了目前輸電線路參數測量的各種方法,分析了其中存在的不足和缺點,提出了基於gps的輸電線路參數在線測量方法,研究分析了gps在電力系統同步采樣中的應用方式以及可能出現的誤差,在同步采樣的基礎上提出了基於雙端信息的線路參數計算方法,較好地解決了輸電線路參數測量中存在的一些問題,尤其是多回互感線路零序參數測量困難的問題。Because the structural interpretation of the 3d model only is of non - uniqueness and uncertainty due to geometric constraint, the finite strain analysis was also applied in the structural interpretation. 184 oriented samples have been drilled at 18 sampling sites in yanjinggou, western sichuan
在川西鹽井溝地區18個采樣點鉆取了184塊定向巖心樣品,通過磁組構的分析結果發現,鹽井溝地區的磁組構基本上都是弱應變的初始變形組構,褶皺前翼應變強度比后翼略強。This is a heuristic strategy. it can reduce the intersection tests need to be computed between bounding volumes by tracing the traverse process in previous time to gain traverse path in current time. the correctness and validity of collision detection can be guaranteed by maintaining the tracing list
這是一個啟發式的策略,通過跟蹤國防科學技術大學研究生院學位論文上一時間采樣點對包圍盒樹的遍歷過程,確定當前時間采樣點的遍歷路徑,從而有效地減少了遍歷過程中包圍盒相交測試的次數,提高了演算法效率,同時通過對跟蹤表的維護,保證了碰撞檢測的正確性和有效性。When determining a candidate ellipse, the number of points sampled randomly was maximally reduced, more non - ellipse points were eliminated, and therefore useless sample and calculation were reduced
在確定候選橢圓時,最大限度地減少隨機采樣點數?剔除更多的非橢圓點,降低了無效采樣,減少了無效計算。In this paper, a new control strategy based on the adaptive deadbeat voltage space vector is presented. this control scheme has a lower sample frequency and a smaller difference between switch frequency and sample frequency. it has many advantages, such as producing zero vectors organically, tracing exactly, non - shaking, etc. and its dynamic response is better
對于電能質量調節器來講, pwm跟隨指令參考信號的控制性能在很大程度上影響著裝置的補償效果,本文選擇無差拍電壓空間矢量控制為系統控制策略,這種控制方法具有采樣頻率低,開關頻率與采樣頻率的差距小,能有機地產主零矢量、跟蹤精確以及無抖振等優點,動態響應快。The advantage of the random sampling theory relative to the real time sampling theory is that it does have no use for high - powered hardware to support. so we can choose components freely. the difficulty is to ensure the randomicity, to apply the interpolate technology and to ensure the multiple of time extending
隨機采樣原理相對于實時采樣原理的優點在於不需要高精度的、高性能的硬體支持,這對于器件的選用有很大的餘地,難點在於隨機性的保證和內插技術的應用和時間放大倍數的可確定度。The algorithm generates three - dimensional terrain model and displays in real time. it uses an efficient and simple method to attain the dependency between sampling points on terrain, and refines the center points in top - down way. it incorporates the dependency of points into their errors so that the cracks inside the terrain block are avoided, at the same time eliminates the cracks at the edges of blocks through adjusting the elevations of those points that cause the cracks
該演算法基於規則格網數據實時生成三維地形模型,並實時顯示;採用了一種簡單而高效的方法來求解采樣點之間的依賴關系;以「從頂向下」方式細分中心頂點;並把頂點依賴關系融合進頂點誤差中,避免了地形塊內部的裂縫,同時通過調整塊邊界點的高程消除了塊邊界處的裂縫;演算法還具有利用幀間相關性,視相關等方面特點。This thesis discusses the pulse doppler ( pd ) weather radar signal processing system including digital intermediate frequency ( if ) receiver, especially on the application of if sampling and digital demodulation technique in pd weather radar signal processing system, the influence of amplitude and phase unbalances of in - phase and quadrature channels on weather radar echo spectrum estimation, ground clutters elimination algorithms and a typical engineering realization scheme of pd weather radar signal processing system
本論文研究的是採用數字中頻接收技術的脈沖多普勒氣象雷達信號處理系統,重點研究了中頻采樣及數字解調技術在脈沖多普勒氣象雷達信號處理系統中的應用、正交雙通道幅相不平衡對氣象回波譜估計的影響、地雜波濾波演算法,以及脈沖多普勒氣象雷達信號處理系統的具體工程實現。After we adjust the models of terrain and plants with other important parameters, we use some techniques such as sample points, multi - resolution to generate the whole meadow scene with high sense of reality
將造型好的地形、植物和其他參數整合之後,採用多種先進的繪制手段如點采樣技術、多解析度技術等,繪制出具有高度真實感的草地場景。Parallel structure of poly - phase decomposition and parallel mixer is applied in the ddc circuit, it solves the bottleneck in mixing and increases the handle speed. the partition of the tuning channel according to the digital mixing sequence, and the ddc by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal. according to the structure of the ddc and the requirement of the frequency
短數據快速測頻演算法的具體實現:使用并行流水線的設計方法,提高了系統的數據吞吐率,在100mhz的系統時鐘下,能夠實時處理400mhz ~ 600mhz速率a / d采樣的數據,在64點采樣, 100mhz系統時鐘情況下,初次測頻佔用時間640ns ,以後每次測頻佔用時間縮短到160ns ,實時地提供多相濾波下變頻所需的載頻位置信息,縮短了接收機的調諧時間。As the agricultural nfs is the most important factor for water environmental deterioration and lake eutrophication in china, more and more scientists and technologists focus on the control countermeasurc and pollution mechanism of agricultural non - point source ( nfs ). based on the investigation of natural resource and agricultural distribution, the loss rule of nitrogen and phosphorus in the typical land of qiandao lake watershed and distribution rule of the phytoplankton and physico - chemical characteristic in the lake were studied, and the input loading of nitrogen and phosphorus was also calculated by the annagnps model in this thesis. according to the routine monitoring data of the water environment in qiandao lake from 1989 to 2001, the concentrations of toxic substance and heavy metal were under the monitoring limit, but the total nitrogen ( tn ) and total phosphorus ( tp ) were much higher than the criterion for lake and reservoir
本文調查了千島湖流域的自然資源和農業生產情況,研究了典型坡地降雨徑流中的氮、磷污染物的輸出規律,利用annagnps模型估算流域農業非點源污染物輸入負荷,並在千島湖內設點采樣,對水質理化指標和浮游植物群落進行系統的研究,得出以下結論: 1989 2001年間的水環境常規監測資料統計分析表明,有毒物質和重金屬濃度長期在監測下限內, no _ 2 - n 、 no _ 3 - n 、 nh _ 3 - n年平均濃度均符合類標準,但湖泊水庫特定項目tn和tp濃度分別為超類和類,呈嚴重超標狀況,湖區主要污染因子是將導致富營養化的物質tn和tp 。By using auto - adjusting boundary conditions and the method of three cubed spline curve fitting, the system software can recover both of the horizontal and vertical beam profile. the measurement system can also measure the beam landing screen error of cpt. it provides a important measurement and analysis tool to improve the performance of electron gun and dy, and improve the definition of cpt
系統軟體中,提出了採用動態確定邊界條件,通過對離散采樣點的三次樣條插值曲線的擬合恢復束斑x和y方向的輪廓,本系統既能準確客觀地描述電子束輪廓,又能夠準確快速地測量電子束著屏誤差等多種參數,為cpt電子槍和偏轉系統的性能改進與解析度的提高提供了有力的測試分析和研究手段。Aimed at tackling the stochastic variations caused by non - artificial natural factors and accidental factors such as nonpoint source contamination and point source contamination in geochemical maps for different continental and sea media of eastern zhejiang coastal area, this paper puts forward a geochemical map formation method for different continental and sea media based on a suitable data - processing model and color area spatial distribution so as to improve the map face effects
摘要針對浙東沿海地區陸海不同介質采樣區地球化學圖中出現的自然因素,以及非點源污染和點源污染等因素引起的隨機變異,提出選擇一種適宜的數據處理模型和色區空間分配為內容的陸海不同介質地球化學成圖方法,以改善圖面效果。Based on the unified recursive formula, the four algorithms included in this study are the central difference method, the newrnark ' s method, z - transform method, and duhamel ' s step integral method. the accuracy, the phase and other existent problem are studied in this paper. it is proved in this paper that the recursive parameters b1and b2are relate to the poles of theoretical transfer function
分析中可以發現,中心差分方法, newmark中點加速度方法、 z變換方法及duhamel逐步積分法在精度范圍內其計算相位是沒有畸變的,中國地震局工程力學研究所頃土學位論文一但是中心差分方法, newmark中點加速度方法隨著采樣間隔及系統自振頻率的增大,系統的固有自振周期被改變,其傳遞函數的共振區域與理論傳遞函數的共振區域會發生分離。We arrived at the park before the appointed time, cheerfully set up picnic tables, spread out the tremendous quantity and variety of vegetarian food, and waited for the guests
大家約好在附近的公園見面,工作人員提早在指定時間前到達,興高采烈地搭起野餐桌,將各式各樣素食餐點歡喜地陳列,等候賓客光臨。The theoretic analysis and computer simulation results reveal that this influence ca n ' t be ignored. because the if sampling and digital demodulation technique can improve amplitude and phase unbalances of in - phase and quadrature channels, we apply it in the pd weather radar signal processing system and select several digital demodulation algorithms, which are easier to implement, for this system
由於採用中頻采樣和數字解調技術能有效地提高正交解調兩路的幅相一致性,本文將中頻采樣及數字解調技術應用到脈沖多普勒氣象雷達信號處理系統中,並結合氣象信號的特點選擇了適合工程實現的中頻采樣及數字解調演算法。In order to decrease the influence of the interference sources during the test and acquire more reliable and more accurate data, this paper has made a comprehensive investigation on the process of performance measurement based on hardware performance monitoring, including main work as follow : ( 1 ) we have investigated the function and bottom implement of the performance monitoring hardware, and deeply studied on the ia - 64 processors with more advanced mechanism of hardware performance monitoring than others, including program counter sampling 、 period statistics 、 invalidated event address sampling and event restriction
本文以減小測試過程中干擾源的影響程度,獲得更可靠、更準確的性能數據為根本目標,對基於硬體性能監視的性能測試過程進行了深入地研究,主要包括以下研究工作: ( 1 )以ia - 64處理器為例,研究了性能監視硬體的底層實現和功能,並重點研究了ia - 64處理器上較其他處理器先進的硬體性能監視機制,包括程序計數器采樣、周期統計、失效事件地址采樣和事件限制。The paper contact the remote sensing images with gvg data from the program, so the interpreter of remote sensing images can consult the gvg spot for crop information of remote sensing images. it can increase the objectivity and precision of interpretation of remote sensing images
本文通過自編程序將gvg數據庫中采樣點的經緯度坐標與遙感圖像結合,使解譯者能獲取遙感圖像某一點對應的實際地面采樣圖像,在解譯過程中直接參考gvg采樣圖像,大大提高解譯的客觀性,提高解譯精度。This distance measuring system may suffice the need of high sampling speed and signal timing processing in echo disposal
針對毫米波探測系統的特點,測距系統能夠滿足采樣速率快、信號實時處理的要求,可實現對地面目標回波信號進行實時採集和高速處理。The fault origin can be efficiently found out by calculating the probability of each industrial variable making the sample abnormal and analyzing the industrial process
通過求出故障采樣點上各工業變量導致采樣點異常的概率,並結合工業過程的特點,可以有效地找出故障源。分享友人