In 1960, R.E. Kalman published his famous paper describing a recursive solution to the discrete-data linear filtering problem. Since that time, due in large part to advances in digital computing, the Kalman filter has been the subject of extensive research and application, particularly in the area of autonomous or assisted navigation.
標簽: R.E. discrete-dat describing published
上傳時間: 2015-10-22
上傳用戶:2404
DFT(Discrete Fourier Transformation)是數字信號分析與處理如圖形、語音及圖像等領域的重要變換工具,直接計算DFT的計算量與變換區間長度N的平方成正比。當N較大時,因計算量太大,直接用DFT算法進行譜分析和信號的實時處理是不切實際的。快速傅立葉變換(Fast Fourier Transformation,簡稱FFT)使DFT運算效率提高1~2個數量級。其原因是當N較大時,對DFT進行了基4和基2分解運算。FFT算法除了必需的數據存儲器ram和旋轉因子rom外,仍需較復雜的運算和控制電路單元,即使現在,實現長點數的FFT仍然是很困難。本文提出的FFT實現算法是基于FPGA之上的,算法完成對一個序列的FFT計算,完全由脈沖觸發,外部只輸入一脈沖頭和輸入數據,便可以得到該脈沖頭作為起始標志的N點FFT輸出結果。由于使用了雙ram,該算法是流型(Pipelined)的,可以連續計算N點復數輸入FFT,即輸入可以是分段N點連續復數數據流。采用DIF(Decimation In Frequency)-FFT和DIT(Decimation In Time)-FFT對于算法本身來說是無關緊要的,因為兩種情況下只是存儲器的讀寫地址有所變動而已,不影響算法的結構和流程,也不會對算法復雜度有何影響。
標簽: Transformation Discrete Fourier DFT
上傳時間: 2016-04-12
上傳用戶:lx9076
Fast settling-time added to the already conflicting requirements of narrow channel spacing and low phase noise lead to Fractional4 divider techniques for PLL synthesizers. We analyze discrete "beat-note spurious levels from arbitrary modulus divide sequences including those from classic accumulator methods.
標簽: settling-time requirements conflicting already
上傳時間: 2016-04-14
上傳用戶:liansi
oJPEG2000中DWT的MATLAB實現n the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time
標簽: compression transform discrete MATLAB
上傳時間: 2013-12-14
上傳用戶:luopoguixiong
從時域分析比較了ofdm和stbc與ofdm結合的性能差別-from time-domain analysis and comparison of OFDM stbc OFDM combined wi
上傳時間: 2013-06-05
上傳用戶:caozhizhi
HT47R20A-1時基(Time Base)使用介紹 HT47 系列單片機的時基可提供一個周期性超時時間周期以產生規則性的內部中斷。時基的時鐘來源可由掩膜選擇設定為WDT 時鐘、RTC 時鐘或指令時鐘(系統時鐘/4);其超時時間范圍可由掩膜選擇設定為“時鐘來源”/212~“時鐘來源”/215。如果時基發生超時現象,則其對應的中斷請求標志(TBF)會被置位,如果中斷允許,則產生一個中斷服務到08H 的地址。
上傳時間: 2013-11-15
上傳用戶:13925096126
Backpropagation Network Time-Series Forecasting 源碼, 經典的BPN人工神經網絡例子源碼
標簽: Backpropagation Forecasting Time-Series Network
上傳時間: 2015-01-05
上傳用戶:tb_6877751
Unix和NT上NetWork Time網絡協議(4.0版本)
上傳時間: 2014-01-01
上傳用戶:鳳臨西北
rtai-3.1-test3的源代碼(Real-Time Application Interface )
標簽: Application Real-Time Interface rtai
上傳時間: 2014-11-22
上傳用戶:lps11188
S3C44BOX的BIOS。可使用的命令:help --- show help ? --- = help date --- show or set current date time --- show or set current time setweek --- set weekday clock --- show system running clock setmclk --- set system running clock setbaud ------ set baud rate ipcfg ------ show or set IP address load ------ load file to ram comload ------ load file from serial port run ------ run from sdram prog ------ program flash copy ------ copy flash from src to dst address boot ------ boot from flash backup ------ move bios to the top of flash md ------ show memory data move ------ move program from flash to sdram
上傳時間: 2015-01-22
上傳用戶:ANRAN