basis of computer algorithm 中文意思是什麼
basis of computer algorithm
解釋
計算機演算法基礎-
On the basis of algorithm analysis, from aspects of detecting principle, detecting steps and computer emulation, the authors expatiate how to use wavelet transform to detect backscatter signals ' time difference and find the fantastic point of backscatter signal ( the time point when backscatter signal reaches ), finally to find the location of the object being detected
在演算法分析基礎上，從檢則原理、檢測步驟、計算機模擬方面闡述如何利用小波變換檢測回波信號時差，以確定回波信號的奇異點（回波信號到達時間點） ，進而確定被探測目標的位置。 -
Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation
在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。 -
The detection of interest points is the basis of kinds of computer vision applications, such as : camera calibration, 3d reconstruction, image matching, video retrieval, motion estimation, etc. in this paper, three impersonal criteria : delocalization, false - detection rate, and repeatability are presented to evaluate the performance of an interest points detection algorithm
興趣點檢測是許多計算機視覺應用的基礎，如：攝像機定標、三維重建、圖像匹配、視頻檢索、運動估計等。本文首先給出了一個評價興趣點檢測演算法性能的客觀標準，這個標準包括以下三個準則：點位置偏差、誤檢率及重復度。 -
It presents a model to predict dynamical demand of market in revenue management system by computer simulate algorithm, which regulates real - time pricing and classed seat allocation simultaneously on the basis of the maximized profit
應用計算機模擬演算法動態構造民航收益管理系統中的需求預測模型，並根據航班收益最大化原則，確定價格與座位存量分配，根據需求變化實時調整價格和座位存量。 -
Visual analysis of human motion has been receiving increasing attention from researchers in the fields of image processing and computer vision during the past few years. it has a lot of applications in virtual reality, smart surveillance system, advanced user interface, motion analysis and video compressing, etc. this paper focuses on the technology of human motion tracking based on video, first, we make a summarization of the domestic and overseas status of the research in this field. on the basis of this, we analyse the technical difficulties of human motion tracking. as most of the existing model - based methods of human motion tracking perform not so good in some situation as they need mannual intervention, and also the precision of tracking is not so satisfying during the research of tracking of walking people because of the self - occlusion of legs, this paper proposes an algorithm of automatic detection and tracking of legs of the walking people based on monocular image sequences, in which we analyse the features of walking people, track the five joints of lower limbs, get various parameters, and then re - construct the walking process. the main research achievement is as follows : 1 ) we propose an algorithm of markerless automatic extraction of leg skeleton. first we divide the video into continuous image sequences, after background subtraction, the satisfying human region could be extracted, then we get a single - connected region by converting the rgb image to binary image and median filtering. afterwards, the contour of lower limbs in the frame with a widest boundingbox is detected, using sobel operator, to find the ankle joint of leg behind according to the features and rules of walking, then, the joint of knee of leg behind, hip, ankle of leg in front, knee of leg in front could be got in turn. so, model of leg skeleton is constructed
首先將視頻分解成許多連續的靜態圖像幀，經過背景去除，把感興趣的人體區域提取出來，通過二值化，中值濾波等預處理方法得到只有人體的一個單連通區域，然後用sobel運算元檢測出boundingbox最寬幀中人體下半身的輪廓，根據運動規律及特徵找到後腿踝關節點，結合從boundingbox最窄幀中所獲取的腿長依次得到後腿膝關節，跨部關節，前腿踝關節，前腿膝關節四點，從而構建出腿部骨架模型。 2 ）實現了人體步行腿部骨架的跟蹤演算法。在完成對腿部骨架模型的自動初始化之後，本文對跨關節、膝關節及踝關節分別採用運動建模、圓周相交定點演算法、運動預測及預測點周圍搜索rgb相似矩形塊三種方法確定每一幀中其實際坐標，從而重構出腿部骨架的運動過程。 -
We encoded and optimized the filter to design the algorithm for filter. computer simulation of complete simulation has demonstrated that the new filtering technique can significantly not only reduce the width relative deviation and the area relative deviation of the image, but also improve the resolution and the focal depth. it provides directive basis for the development of the experiment and the practicability of the technology
計算機模擬結果表明，通過在非瞳孔面的適當分數傅立葉變換面上加入優化設計的位相型濾波器，可有效減小光刻圖形的線寬偏差和面積偏差，提高成像系統的解析度和焦深，為分數域濾波改善光刻圖形質量實驗的開展和這一解析度增強技術走向實用化提供了指導依據。 -
With the coming of information age, more and more people realize the importance of information. useful information hidden in plenty of data needs mining energently. the technology of data mining arises and develops unders such circumstance. the main tast of data mining is to extract or mine the useful information from the data. we can get great amount of data from the computer transaction every day. the data is very useful for us to make decisions on management. the paper concludes and introduces association rule about its concept, sort, model and step for mining the data, measure and some basic algorithm on the basis of the at research. at the same time, we analyse hopfield - network ' smodel, character, energy - function, movement - equation and so on. moreover, to the requirement of the system of information of computer - saling, we have done the following and there are good result. fisrt, considering the weight and constraint, we propose the algorithm for the weighted and constraint association rule
本文首先對數據挖掘中的關聯規則和神經網路的已有成果作了詳細深入的調研，歸納和整理了關聯規則的概念、分類、關聯規則挖掘的模型與步驟、關聯規則的度量方法以及一些基本演算法；還歸納和整理了hopfield網路的模型、特徵、能量函數、運動方程等，並在此基礎上，結合電腦賣場信息支持系統提出的需求，做了如下工作，並取得了一定的成果和成效： （ 1 ）考慮加權與約束兩種情況，提出了既帶權重又帶約束的關聯規則提取演算法。 -
This system provides pulse signal and direction signal to step motor driver by computer ’ s controlling step motor control card, and makes motor and guage ’ s pointer rotate. computer gets the micro displacement measured by grating measuring system via rs232 serial port, and acquires guage ’ s image by high precison ccd camera, then processes the guage ’ s image by software, including pre - processing, graying, binarization, thinning and hough transform, so as to recognize the position of guage ’ s pointer, finally calculates all kinds of precision on basis of algorithm established by national detecting rules of gauges
本系統通過計算機控制步進電機控制卡來給出步進電機驅動器需要的脈沖信號和方向信號，進而帶動電機驅動儀表指針轉動，計算機通過串口實時採集光柵測量系統的微位移信號，並且通過高精度ccd攝像機實時獲取表盤圖像數據，同時通過計算機軟體實現表盤圖像處理，包括預處理、灰度化、二值化、細化和hough變換等，最終快速識別出表盤指針的位置，並根據國家表類檢定規程所制定的演算法檢定出指針式儀表的各種精度。 -
On the basis of the loess distribution, engineering geology and specific properties of road use in gansu province, this paper divides traffic volume grade according to the conditions of transportation of all high - grade highways which are being built and have already finished. besides, it analyses the relativity of three different test methods, establishes the related relations, and divides their strength grade after measuring rebound module of subgrade of the representative high - grade highways in gansu loess area. furthermore, it recommends the common semi - rigid and asphalt concrete design parameters by comparing the experiment in doors to outdoors, and draws up the optimized design program aga - lq based on advanced genetic algorithm and solves the non - liner optimization design model of asphalt pavement construction by computer
本文基於甘肅黃土分佈、工程地質及路用特性研究，對該黃土地區在建和已建的全部高等級公路交通狀況進行了詳細調查和分析，劃分了交通量等級；對甘肅黃土地區代表性的高等級公路，利用三種不同方法實測了土基回彈模量，分析了各測試方法的相關性，建立了相關關系，對土基回彈模量進行了強度等級劃分；通過室內外試驗比較，推薦了常用的半剛性材料和瀝青混凝土設計參數值；利用計算機編制了基於改進遺傳演算法的優化設計程序aga ? lq ，並成功求解了瀝青路面結構非線性優化設計模型；最後經計算提出了甘肅黃土地區高等級公路瀝青路面典型結構，並編制了查詢圖庫軟體cx ? lq ，供設計單位直接選用，科學簡便地解決了甘肅黃土地區的路面設計問題。 -
Because of continuity of load effects in time and space, displacement effects of previous time period in the latter time period and effects in various places have been taken into accounts. it is on these basis that the paper puts forward the dispersed counting way discrete algorithm based on such relationship, takes time - stepping integration to calculate rails " dynamic response, uses fortran language to write counting program, and conducts computer mock tests about rails " power response
由於荷載作用在時間和空間上的連續性，因此考慮了前一時間段所產生的位移對后一時間段的影響以及不同位置的相互影響，在此基礎上提出了基於車輪、軌道、枕木相互關系的離散化演算法，採用時間步長積分計算了軌道的動力響應，使用fortran語言編制計算程序對軌道動力響應進行了模擬。 -
In 1980s, the theory of computer vision and the research on algorithm developed very fast, there came out many new concepts and new methods. formerly three dimension information was obtained via processing on two dimension image, while this time kinds of invariable features were obtained on the basis of gray scale / surface direction to perform area separation
進入八十年代，計算機視覺理論和演算法研究發展迅速，新觀點、新方法層出不窮，已從對二維圖像進行處理獲得三維信息，發展到從灰度表面方向出發提取各種不變的特徵，進行區域分割。 -
On the basis of summarization of the simulating technology of sonar signal, the paper brings forward the mathematics models of radiate noises of ships and torpedo, and simulates in computer ; tests the correctness of some pivotal methods through the simulation, on the basis of which, system scheme being brought out ; a parallel processor with twelve sharcs, combining with parallel processing theory and topographic configuration, is used to realize the algorithm of noise simulation on the basis of research on optimum distribution of algorithm and method of embedment in real time ; at last, gui, realized with vc + + language, is used to set parameters and control the whole parallel system flexibly and conveniently
本文在綜述聲納信號模擬技術的基礎上，首先提出艦船和魚雷輻射噪聲的模擬數學模型，並進行了計算機模擬實現；通過計算機模擬驗證了一些關鍵技術的正確性，並由此提出系統實時實現方案；構造了一個12個處理器的并行處理機? sharc陣列，結合併行處理理論和sharc陣列的拓撲結構研究了有關模擬演算法的最優分配及其嵌入整個聲納系統的方法，實時實現了噪聲模擬演算法。最後，使用vc + +語言編寫人機界面，靈活、方便地進行參數設置以及對整個并行處理系統進行控制。 -
This paper sums the situations and trends of domestic and international engineering machinery firstly, discusses the demands and implements of intelligent and long - range monitoring and controlling, and constructs a three - layer model of the engineering machinery long - range monitorin and control system : the front unit control systems, the machine - mounted monitoring system and the long - range control center ; proposes a kind of structure of embedded system based on c / os - ; dissects the characteristics, structure, operation and schedule principle of c / os -, modified the kernel, and improves dependability of the schedule algorithm ; designs the hardware in detail : the microprocessor at91rm9200, the store unit, the serial interface, the human - computer interaction interface, the can bus control module, the debug interface and the reset circuit etc. ; on this basis, succeeds in transplanting c / os - to the system, sets up the operating system framework, designs the driver, sets up the institutional framework of upper user ' s application, provides the method and concrete application process of the graphical user interface module based on c / os -. the system designed in this paper, not only has the functions of local control, friendly human - computer interface, but also has various interfaces which make the system can be managed by the long - rang center
本文首先綜述了國內外工程機械行業發展的現狀和趨勢，闡明了實施工程機械智能化及遠程監控的意義和需求，並為此構建了工程機械遠程監控系統三層結構模型:前端單元控制系統、車載監控系統和遠程監控中心;提出了一種基於c / os -的嵌入式車載監控系統構建方案;深刻剖析了c / os -的特點、內核結構、運作機理、調度演算法，在此基礎上對其內核進行移植前的必要修改，並對其調度演算法進行了可靠性改進;對構成嵌入式系統硬體的各個主要部分:嵌入式微處理器at91rm9200 、存儲單元、串列介面、人機交互介面、 can總線控制模塊、調試介面以及復位電路等做了詳細的設計;在此基礎上，成功地將c / os -實時內核移植到本文研發的嵌入式硬體系統中，建立了車載監控系統的操作系統體系結構，編寫了該操作系統的底層硬體驅動程序，建立了上層用戶應用程序的組織結構，並給出了圖形用戶界面模塊化應用程序在c / os -操作系統上的建立方法和具體應用過程。 -
As the essential electrical calculation means, load flow calculation provides important basis for power systems operation and studies, and is indispensable to advanced power systems application software. in this thesis, the development of methods for load flow solution of distribution networks at present have been fully analyzed and evaluated in the aspect of convergence. the algorithm for distribution power systems base on the complex matrix was proposed in this paper, the proposed methods is very efficient and required less computer memory storage observably
潮流計算是電力系統中應用最廣泛、最基本，也是非常重要的一種電氣計算。它給電力系統的研究人員和實際運行人員提供了重要參考依據，也是許多電力系統高級應用軟體中不可缺少的一部分。本文針對配電網潮流計算的現狀進行了全面分析，深入討論了目前各方法的特點，並從收斂性能及各方面指標進行了比較分析，提出了基於復數矩陣的配電網潮流的原理、數學模型和實現方法，並通過編程于以實現。 -
Also, the attitude algorithm of the strapdown inertial system of shipboard missile is investigated. on the basis of analysis the sins error model, computer simulation of the sins error are given in accordance with the stochastic error of the inertial instruments
此外，還對艦船捷聯姿態演算法進行了研究，並在分析捷聯系統誤差模型的基礎上，針對慣性元件的隨機誤差給出了捷聯系統的誤差模擬。
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