硬體字長 的英文怎麼說
中文拼音 [yìngtǐzìzhǎng]
硬體字長
英文
hardware word size-
At last the algorithm of ddmf is achieved by the investigation tool of altera company ? quartus ii and the vhdl language, and its ip core is also achieved which is used not only in the satellite navigation position system, but also in the long pn code dsss system. ddmf investigated in the dissertation gives a good way to design the rapid pn code acquisition in the beidou project, and the technology has the definite theory and practice significance
此外還應用altera公司的最新的fpga開發工具quartusiiv5 . 1 ，採用了國際標準的硬體描述語言? vhdl語言，對數字差動匹配濾波器和傳統匹配濾波器演算法予以實現，開發了該演算法的軟ip核，可以對所應用的擴頻碼長度， a / d采樣后的數據量化階數，所用擴頻碼等可進行隨意改寫。Hardware platform of this project is p4 pc with program decoder card of opitibase videoplex plus and transport stream broadcasting card of bluetop bstc - 12. the debugging devices include a generic qam, a set of color tv, two set top boxes made by changhong and jiuzhou
課題實現的硬體平臺包括p4級pc ，以色列opitibase公司的videoplex卡和北京藍拓撲公司的ts流數據發送卡， qam調制器，四川九州和長虹公司的數字電視機頂盒各一部以及pal制彩色電視機一臺。For a long time, the deviation, lying in grasping the purpose of traditional primary school word - learning teaching in china, has led to several serious problems in the teaching : ( 1 ) a few words ( 2 ) mechanical memorizing ( 3 ) memorizing in detail ( 4 ) one sided assessment, etc. consequently, all this results in the situation of small quantity, slow speed, bad effect and time consuming " in primary school word - learning teaching, which affects the whole word - learning, which affects the whole chinese teaching negatively
長期以來，我國傳統的小學識字教學在目的把握上存在偏差，導致在教學中出現一些嚴重的問題：識字量少（達不到閱讀的要求） ；機械識記（死記硬背，易忘，負擔重） ；精細識記（識字過程分析講解居多，整體認讀難，在閱讀過程中無法做到「識字自動化」 ） ；評價片面（單純以能寫會默為評價標準） ，等等。因而造成了小學識字教學「少慢差費」的狀況，對整個小學語文教學帶來了很大的負面影響。At first, the thesis discusses the hardware implementing arithmetic of fast fourier transform ( fft ) and some correlative problems need to be solved. and according to the thesis " design demand and characteristic of large - scale programmable logic device ( pld ), the thesis designs an implementing scheme of fft processing machine based on pld
首先，論文研究了快速傅立葉變換（ fft ）的硬體實現方法以及有限字長效應等問題，並根據論文的設計要求和大規模可編程邏輯器件的特點，設計了一個基於可編程邏輯器件的fft處理機實現方案。First, the implementation project of the if digital receiver of tdrss user transponder by the fpga and dsp cooperation design method is proposed in this thesis. then, the software simulation system for the if digital receiver is built up, definite word - length effect is analyzed, and some useful conclusions are derived, which provides reference for the following hardware design and debug
本文首先採用fpga與dsp協同設計的方法實現該接收機的方案，然後建立了該中頻數字接收機的軟體模擬系統，對有限字長效應進行分析，得到了一些重要結論，為下一步的硬體設計和調試提供了參考。Focus on the characteristics of this radar, long - time effect and electromagnetic compatibility are emphasized. some hardware / software resolution to the electromagnetic interference is put forward and the tolerance deviation of the each detected point is different. the fault dictionary is made more reliable in reference to the previous repairing experience and the whole system is convenient for routine use
針對某雷達的特點，著重對長線效應和電磁兼容性進行了討論，並提出了對電磁干擾的硬體和軟體解決辦法，對各檢測點的容差提出了不同的要求，並參考以往的修理經驗，使字典更具可靠性。The main research content of the article is involved as follows : ( 1 ) the research and discussion of the quantitative metallographic analysis methods and the measuring methods of micro hardness. ( 2 ) the application of digital image technique in metallographic image preprocess such as gray level transformation, dichotomy, noise eliminating, dilation and erosion, image enhancement, boundary detection, etc. the application of the wavelet and multi - resolution analysis in metallographic image procession to improve the measuring accuracy and efficiency. the application of the region growth and mathematical morphology in analyzing image parameters to improve the flexibility and exaction
本文的主要研究內容： （ 1 ）定量金相分析和顯微硬度測量的方法研究； （ 2 ）利用數字圖像處理技術，實現金相圖像的灰度轉換、二值化、噪音消除、膨脹收縮、圖像增強、邊緣提取等預處理；引入小波理論、基於數學形態學的區域生長法對采樣圖像進行分析，實現了對採集圖像邊緣的有效提取，從而提高了測量精度； （ 3 ）開發了金相圖像分析系統的主體結構（硬體結構和軟體結構） ； （ 4 ）採用windows開發平臺的面向對象程序設計語言microsoftvisualc + +進行系統的模塊化設計； （ 5 ）提出了採用多模式的知識表示方法建立知識庫，應用正反推理、模糊數學模型、基於規則的模式匹配模型建立金相分析專家系統。The fifth chapter analyzes the fixed - point error of bp - based and normalized bp - based decoding algorithm, and gives the final simulation results of each decoding algorithm. with the simulation results and the considering the tradeoff between hardware complexity and error performance, some key parameters and finite precision analysis for the hardware implementation of ldpc decoder have been performed
第五章對bp - based和normalizedbp - based演算法進行了定點模擬，對ldpc譯碼器的關鍵參數、硬體實現中的定點量化與字長精度問題進行了深入的研究，給出了對譯碼器硬體實現具有參考意義的研究結果。This system is realized by cpld which can get rid of the disadvantages in one - time design including property liable to jamming, long sampling period, and poor working stability. its sampling period is up to 500ns at least and output delay is only 19. 5ns. a stable period of pulse coming out of quadruple - frequency differential circle belongs to it
完成了用vhdl硬體描述語言對全數字轉速位置測量子系統的設計，並用max ? plusii軟體進行了編譯和波形模擬，在cpld （ max7000 ）得到實現，該系統克服以往設計中存在的易受干擾、工作穩定性差、采樣周期太長等的缺點，輸出延時僅為19 . 5ns ，采樣最低周期可達到500ns ，且四倍頻微分電路獲得的脈沖周期穩定。Their input capabilities are limited to a few buttons or numbers, or entering data takes extra time, as happens with a personal digital assistant ' s ( pda ) handwriting - recognition capabilities. they have less processing power and memory to work with, and their wireless network connections have less bandwidth and are slower than those of computers hard - wired to fast lans
它們的輸入功能局限於幾個按鍵或數字鍵，或者像個人數字助理（ pda ）手寫體識別功能那樣，輸入數據要花很長時間，它們所擁有的工作處理能力和內存都較校比起那些通過計算機硬連線與快速局域網相連的連接，它們的無線網路連接帶寬較窄，速度也較慢。分享友人