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.
标签: R.E. discrete-dat describing published
上传时间: 2015-10-22
上传用户:2404
DFT(Discrete Fourier Transformation)是数字信号分析与处理如图形、语音及图像等领域的重要变换工具,直接计算DFT的计算量与变换区间长度N的平方成正比。当N较大时,因计算量太大,直接用DFT算法进行谱分析和信号的实时处理是不切实际的。快速傅立叶变换(Fast Fourier Transformation,简称FFT)使DFT运算效率提高1~2个数量级。其原因是当N较大时,对DFT进行了基4和基2分解运算。FFT算法除了必需的数据存储器ram和旋转因子rom外,仍需较复杂的运算和控制电路单元,即使现在,实现长点数的FFT仍然是很困难。本文提出的FFT实现算法是基于FPGA之上的,算法完成对一个序列的FFT计算,完全由脉冲触发,外部只输入一脉冲头和输入数据,便可以得到该脉冲头作为起始标志的N点FFT输出结果。由于使用了双ram,该算法是流型(Pipelined)的,可以连续计算N点复数输入FFT,即输入可以是分段N点连续复数数据流。采用DIF(Decimation In Frequency)-FFT和DIT(Decimation In Time)-FFT对于算法本身来说是无关紧要的,因为两种情况下只是存储器的读写地址有所变动而已,不影响算法的结构和流程,也不会对算法复杂度有何影响。
标签: Transformation Discrete Fourier DFT
上传时间: 2016-04-12
上传用户: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.
标签: settling-time requirements conflicting already
上传时间: 2016-04-14
上传用户:liansi
oJPEG2000中DWT的MATLAB实现n the use of discrete cosine transform DCT jpeg compression Matlab source, simple and practical, the Notes have a good time
标签: compression transform discrete MATLAB
上传时间: 2013-12-14
上传用户:luopoguixiong
从时域分析比较了ofdm和stbc与ofdm结合的性能差别-from time-domain analysis and comparison of OFDM stbc OFDM combined wi
上传时间: 2013-06-05
上传用户:caozhizhi
HT47R20A-1时基(Time Base)使用介绍 HT47 系列单片机的时基可提供一个周期性超时时间周期以产生规则性的内部中断。时基的时钟来源可由掩膜选择设定为WDT 时钟、RTC 时钟或指令时钟(系统时钟/4);其超时时间范围可由掩膜选择设定为“时钟来源”/212~“时钟来源”/215。如果时基发生超时现象,则其对应的中断请求标志(TBF)会被置位,如果中断允许,则产生一个中断服务到08H 的地址。
上传时间: 2013-11-15
上传用户:13925096126
Backpropagation Network Time-Series Forecasting 源码, 经典的BPN人工神经网络例子源码
标签: Backpropagation Forecasting Time-Series Network
上传时间: 2015-01-05
上传用户:tb_6877751
Unix和NT上NetWork Time网络协议(4.0版本)
上传时间: 2014-01-01
上传用户:凤临西北
rtai-3.1-test3的源代码(Real-Time Application Interface )
标签: Application Real-Time Interface rtai
上传时间: 2014-11-22
上传用户: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
上传时间: 2015-01-22
上传用户:ANRAN