down sampling 中文意思是什麼

down sampling 解釋
下降抽樣
  • down : adv （downmost）1 向下（面）；下，降；在下（面）。 come down 下來；下（樓）來；（雨等）落下。 The...
  • sampling : n. 1. 取樣（品），取標（本）〈指行動或程序〉。2. 樣品，標本。3. 剽竊拼湊歌曲。
  1. In accordance with the problem that the fcm algorithm is quite time - consuming for search out cluster cancroids and may not be suitable for on - line modeling and control. this dissertation proposed an improved fuzzy identification method based multistage random sampling fuzzy c - means clustering algorithm ( mrfcm ). it has higher approximate precision and the cpu time has slowed down sharply compared with the common fuzzy

    Johnyen和liangwang介紹了幾種應用於模糊模型的信息優化準則，本論文在此基礎上對統計信息準則進行一些改進，並與快速模糊聚類和正交最小二乘方法結合，提高了模型的辨識精度和泛化能力。
  2. 1883 feather and down. sampling in view of tests

    羽毛和羽絨.試驗樣品
  3. This paper presents a method of realization of numeric transducer using tms320c542 dsp. the program of numeric down - transducer and multi - rate sampling is given

    摘要在tms320c542數字信號處理器上，用查表方法實現了dsp數字變頻器，並給出相關的數字下變頻和多抽樣率信號處理程序。
  4. 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。
  5. Analyze, design and simulate the digital down - convert frequency. first, the analogue if signal is converted to digital if signal in one a / d convertor which used passband sampling theory. the digital if signal is then passed to a pair of digital mixers operating in phase quadrature for mixing the if signal to baseband signal

    首先利用帶通采樣定理對中頻模擬信號進行a / d變換后將其混頻到基帶，然後用平方根升餘弦滾降濾波器同時完成低通濾波和匹配濾波雙重作用，以提高解調器的效率。
  6. This dissertation adopts a universal digital ds / dmpsk modulation and demodulation scheme which is based on fpga. this scheme adopts quadrature balanceable modulation, intermediate frequency sampling, digital matched filtering, delay differential demodulation techniques and so on. it directly processes the digital signals on intermediate frequency without down - conversion, and doesn ’ t need pseudo random codes synchronization and carrier wave extraction circuits

    本文採用了一種基於fpga的通用數字調制解調方案，該方案在調制端採用了正交平衡調制技術，在解調端採用了中頻帶通采樣、數字匹配濾波、延時差分解調等技術，直接在中頻上進行數字信號處理，不需要進行下變頻，也不需要增加額外的偽隨機碼同步捕獲和載波提取電路。
  7. Consulting relevant reference and related theories in software radio, this thesis is working on technologies of digital channelized receivers, including the theories on a / d sampling, digital down converter, multi - velocity signal processing, polyphase filter and uniform dft filter bank

    本文針對電子偵察系統數字化實現，對數字式通道化接收機的相關技術進行了研究:包括a / d采樣的理論、數字下變頻相關理論、多速率信號處理的理論、多相結構優化抽取濾波、均勻dft濾波器組。
  8. To improve the adaptability of the method, a texture enhanced technique based on an improved log filter is presented. to improve the efficient of the method, box filtering, average sampling and pyramid analysis are used so that the matching time is cut down to 1 / 10.

    在此基礎上，為提高演算法的適應性，本文改進了log濾波紋理增強技術;為提高演算法的實時性，本文綜合利用盒濾波、均值采樣和金字塔分解三種手段將演算法效率提高了一個數量級。
  9. It was chased down that general dimension series value changed with the variation of the sampling time and noise

    計算了標準信號的廣義分形維數，找出了廣義維數序列值隨信號的采樣時間、噪聲變化而變化的特點。
  10. Probably he had come down in the world and this sampling was all that was left him from the time when he could afford to come and select his favorite pudding

    或許他在世界上下來，而且這抽取樣品是所有的那從他可以負擔來而且選擇他的喜愛布丁的時間起是左邊的他。
  11. Feather and down - sampling in view of tests

    羽毛和羽絨.檢驗抽樣
  12. Robert ting - yiu chung, director of public opinion programme, observed, " the popularity rating of donald tsang has come down a bit from its record high, but his support rate has gone up a bit, both changes being within sampling errors. in other words, tsang s popularity has not changed much after he stepped into his post - election honeymoon period

    民意研究計劃主任鍾庭耀分析：曾蔭權的民望支持度由歷史高位略為回落，但支持率就略為上升，兩者變化都在抽樣誤差之內，換言之，曾蔭權的民望在進入當選后的蜜月期仍變化不大。
  13. Digital down converting is one of the key technologies of software radio. it can improve the efficiency and reliability of communications. lt is also important to realize software radio receivers. the paper focuses on the technologies involved in digital down converting, such as integer sampling - rate conversion, non - integer sampling - rate conversion and carrier frequency offset estimation algorithm. on the base of these, the paper analyzes applications of digital down converting in the hsp50214b programmable downconverter. the hardware and sofeware of the application of digital down converting are also introduced

    數字下變頻技術是軟體無線電中的關鍵技術之一。該技術不僅有助於提高通信的有效性和可靠性，還對實現真正的軟體無線電臺有著重要的意義。本文對數字下變頻所涉及整數倍采樣率轉換、非整數倍采樣率轉換和載波初始頻差估計校正作了較深入的研究，並提出了一些實用高效的實現結構和演算法。
  14. The whole system analysis and sub - block design were proceeded to the function requirements. typical sub - blocks were analysed emphatically such as switch capacitor sampling / holding block, brightness control block, oscillator, thermal shut down circuit, ptat and bandgap reference etc. principle and operation of driver circuit are analyzed in the thesis

    在電路設計中，結合開關電容采樣保持電路、 pwm / linear亮度控制模式以及恆流源驅動等理論給出設計依據，並根據功能需求進行了電路的總體結構設計和子電路設計。
  15. After analysis the characters of the human face, we draw a conclusion that the performance both in fast and accuracy can be obtained through suitable character selection and image down sampling. experiments results show that this algorithm is not sensitive to the head rotation and background changing

    考慮到實時性和圖像分割，從設計快速準確的檢測演算法作為出發點，結合人臉的特點採用尺度變換、膚色空間和梯度模型等關鍵技術，較好的兼顧了精度和實時性。
  16. This paper discusses key technology in the digital intermediate frequency receiver with wide band based on software radio, including down - converter on condition of band - pass - sampling, digital down - converter, multi - rate digital signal processing, band - pass signal decimating, and achieves software system simulation based on under - sampling

    摘要分析了基於軟體無線電的寬帶數字中頻接收機中的關鍵技術帶通采樣下變頻技術、數字下變頻技術、多速率處理技術，並實現了欠采樣技術條件的軟體系統模擬。
  17. Sampling gas blow down systems and components for particulate contamination by automatic particle monitor method

    用自動粒子監控器法對氣體排污系統和部件的粒子污染物取樣
  18. In this article, vectors are composed of mean gray level of image and texture features in detail images of 2d - wavelet transform without down - sampling. distances between each two objects " vectors are much larger than that of seisuke fukuda ' s

    本文首次利用圖像灰度均值與無下采樣小波變換細節圖像紋理能量組成特徵矢量，使目標間紋理特徵的差異比seisukefukuda等方法所得更明顯。
  19. Typical output horizontal formats are high definition 1920 pixels and standard definition 1280 pixels. the purpose of the horizontal format conversion is to allow up or down sampling of picture data in order to increase or decrease the number of horizontal samples in a line to allow the video output to match many different standards

    水平格式變換的目的在於對視頻數據進行上抽樣或下抽樣以增加或減少每行的像素數量，使視頻輸出符合不同的標準；垂直格式變換則是對視頻圖像的垂直解析度上進行上抽樣或下抽樣。
  20. The experiment results show that the watermark embedded is rather robust to various attacks such as adding noise, rotation, translation, scaling, insecting, down - sampling and some of their combinations

    實驗表明該演算法魯棒性較好，對噪聲、旋轉、平移、縮放、剪切、降采樣及其聯合攻擊的抵抗性較強，並且演算法復雜度較低。
分享友人
分享到 Line

分享到臉書