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Engineering-Noise-Control--Theory-and-Practice
The recognition of noise as a source of annoyance began in antiquity, but therelationship, sometimes subtle, that may exist between noise and money seems to be a development of more recent times. For example, the manager of a large wind tunnel once told one of the authors that in the evening he liked to hear, from the back porch of his home, the steady hum of his machine 2 km away, for to him the hum meant money. However, to his neighbours it meant only annoyance and he eventually had to do without his evening pleasure.
- 2013-11-23 12:29:29下载
- 积分：1
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kongjianpinghua
music算法的空间平滑法程序，对协方差平滑后看到对相关信号的空间谱估计准确(music algorithm, spatial smoothing procedures, see the relevant signal space spectrum estimation accurate smoothed covariance)
- 2012-05-24 14:39:59下载
- 积分：1
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1_317309478
用于电磁场和波的模拟仿真与显示，动画效果(For the electromagnetic field and wave simulation with shows, animation)
- 2011-11-19 00:10:38下载
- 积分：1
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MEAN
可将数据平均化，将样本中的异常样本剔除掉，剔除异常样本后进行数据平均(The data can be averaged, the samples of the abnormal sample removed, remove the abnormal sample after the data average)
- 2017-10-28 15:03:26下载
- 积分：1
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saomiao
对图像从上到小进行扫描，稍微修改下，也可以左右扫描(The image is scanned from top to small, slightly modified, they can scan around)
- 2009-11-27 21:45:41下载
- 积分：1
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MATLABjiemi
美国人写的matlab教材，非常好，简单易懂(Americans matlab written materials, very good, easy to understand)
- 2009-12-18 19:11:17下载
- 积分：1
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R_Svd
雷达系统，消除射频干扰的MATLAB程序。(Radar system, to eliminate RF interference MATLAB.)
- 2010-12-25 22:40:18下载
- 积分：1
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midamble
用于检测信道的训练序列，包括生成过程及信道估计。(Channel for training sequence detection, including the generation process and channel estimation.)
- 2010-05-07 23:47:32下载
- 积分：1
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psf_example.tar
field ii 的点散射仿真，包含20个点，其间距和位置可以调整，和其他很多种的成像结果(field ii point scattering stimulate)
- 2020-11-02 13:49:53下载
- 积分：1
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main_no_offset_2
假设截获了一段短波数字通信的信号，要求解调出最终的信息，每组解调出来后，将10组信息组合起来，恢复最终的信源输出数据。
先验信息：两组数据文件，编号为1、2，每组I、Q两路存放，格式为“int16”，采样率为9600Sa/s，其中第一组为单径情况，第二组为多径情况。
参数符合MIL-STD-188-110A标准；
同步序列为syn=seq.dat，BPSK调制；
接收机频率稳定度高于1e-6。
文件中有效信息总长度为333.75s，其中同步头长为5/12s，每时隙1/6s，训练序列占10 ，在数据之前；
交织方式为全交织，矩阵交织，列为1000，在比特级进行；
纠错码码率为1/2；
调制方式为BPSK、QPSK和8PSK中的一种，映射方式为二进制，BPSK相位偏移为0，其余两种为 。
(Suppose intercepted signal for a period of short-wave digital communications requires final demodulated information after each demodulated, combining 10 group information, to restore the final output data source.
Priori information: two sets of data file, numbered 1, 2, each I, Q two-way storage, the format is int16 , sampling rate 9600Sa/s, where the first group is a single path, the second group multipath situation.
Parameters meet MIL-STD-188-110A standard
Synchronization sequence syn = seq.dat, BPSK modulation
The frequency stability of the receiver is higher than 1e-6.
File payload total length of 333.75s, wherein the synchronization header length is 5/12s, each time slot 1/6s, accounting for 10 of the training sequence, before the data
Interleaving for the whole interleaving matrix interleaving, as 1000, carried out at the bit level
Error correction code rate of 1/2
The modulation scheme is BPSK, QPSK and 8PSK one, a binary mapping, the BPSK phase offset is 0, the )
- 2016-06-20 19:12:40下载
- 积分：1
