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m_PN
说明： 伪随机码或称PN码，是扩频通信中不可缺少的一种序列。扩频通信，简单的说来就是通过一组相关性很强的伪随机序列，使原有的信号按照伪随机序列的特性出现。从波形上看，原有信号完全淹没于随机的噪声中，达到隐藏信号和抗干扰的目的。接受方只要有相同的伪随机序列，就可以通过伪随机序列很强的相关性将信号还原出来。而m序列，是扩频系统中最长用的伪随机序列。下面的代码就是基于matlab的生成m序列的代码，通过改变初始多项式的值，就可以生成不同阶数的m序列。(Pseudo-random code or PN code, spread spectrum communication is indispensable to a sequence. Spread spectrum communication, a simple to say that the adoption of a group of highly related to pseudo-random sequence, so that the original signal in accordance with the characteristics of pseudo-random sequence there. From the wave point of view, the original signal completely submerged in the random noise to hide the purpose of signal and interference. As long as the recipient has the same pseudo-random sequence, the pseudo-random sequence can be a strong correlation to restore the signal out. And m sequence spread spectrum system is the longest of the pseudo-random sequence used. The following code is generated based on m sequences of matlab code, by changing the value of the initial polynomial, we can generate a different order of the m sequence.)
- 2009-08-10 22:39:52下载
- 积分：1
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guassian_Apodized_grating11
Guassian apodized fiber bragg grating
- 2011-09-14 01:09:42下载
- 积分：1
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csjjl
根据推导的公式仿真中重LFM信号的回波及处理过程,单个脉冲的回波（距离模糊情况下）为一行向量,
本程序专门用于对比不同处理情况下的积累效果(Long accumulation of compensation)
- 2013-08-05 23:25:39下载
- 积分：1
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8PSK_soft_demod
8PSK的软解调算法，可用于软解调和信道译码的软信息输入(Soft input soft information 8PSK demodulation algorithm can be used for soft demodulation and channel decoding)
- 2015-04-08 22:50:07下载
- 积分：1
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DIRECTION-OF-ARRIVAL-MEASUREMENT
DIRECTION-OF-ARRIVAL MEASUREMENT
- 2014-02-20 10:40:52下载
- 积分：1
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isar_proccessing
this file contains some m-files about calculating the fractional fourier transform and isar processig
- 2010-10-24 18:04:21下载
- 积分：1
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Basic-commands
Basic matlab commands
- 2013-01-07 17:06:15下载
- 积分：1
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code
设计一个信号发生器,并同时画出信号的时域表
示，自相关函数及功率谱(Design of a signal generator and simultaneously draw the time domain representation of the signal, the autocorrelation function and the power spectrum)
- 2013-10-16 21:24:32下载
- 积分：1
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Matrix-Operations
矩阵的运算，在此贡献，希望大家多多指点。(Matrix computation, in this contribution, we hope that a lot of guidance.)
- 2015-03-22 13:57:54下载
- 积分：1
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T01
matlab采用半色调技术对图像进行显示：用模板近似表示10个灰度级，每一个灰度级用3*3 的模板来表示，并对如下图所示的256*256的渐变图像进行半色调输出的检验。(matlab using halftoning image display: template approximated 10 gray levels, a gray level of each template used to represent the 3* 3, and the gradation of the image as shown in Figure 256* 256 halftone inspection of the output.)
- 2014-01-08 10:35:37下载
- 积分：1
