搜索资源列表
lvboqqqqqqq
- 于傅里叶变换的图像加密技术研究 具体是将一幅图像用 fft 变换到频域 在频域中进行加密 我考虑的是通过随机相位来加密的方法，请问用matlab怎样实现 加密后在通过 ifft 得到加密后的图象 -Fourier transform in the image encryption technology to study the details of an image is to use fft transformed to the frequency doma
FGGDFDGFDDF
- 图象特征提取的相位编组方法，欢迎各位同仁下载研究。-image feature extraction phase of organizational methods, and to welcome you download colleagues study.
dds_fpga
- DDS在现在运用月来越广泛，在相对带宽、频率转换时间、相位连续性、正交输出、高分辨力以及集成化等方面都远远超过了传统频率合成技术所能达到的水平，为系统提供了优于模拟信号源的性能。利用DDS技术可以很方便地实现多种信号。在FPGA上实现的DDS-DDS now to the use of more extensive relative bandwidth, frequency conversion time, phase continuity, quadrature output, high-re
FFTModify
- 用能量重心法，对基2分裂的FFT算法进行校正，在整周期采样的条件下，幅值，相位，频率等可以达到很高的精度 -energy center, two pairs of split-the FFT algorithm for correction, in the whole cycle of sampling conditions, the amplitude, phase, frequency, etc., may achieve high accuracy
freqz_m
- 求取系统的绝对幅度响应、相对的db值幅度响应、相位响应和群延时响应的函数 ％ ％db为相对振幅(dB) ％mag为绝对振幅 ％pha为相位响应 ％grd为群延时 ％w为频率样本点向量 ％b为Ha(z)分子多项式系数(对FIR而言，b=h) ％a为Hz(z)分母多项式系数(对FIR而言，a=1) ％-strike rate system in response to the absolute and relative value range db respons
cpm
- 这是一个连续相位调制的程序，解调才用的是相干解调，希望对学习有帮助。-This is a continuous phase modulation procedure, before demodulation using a coherent demodulation, and I hope to help learning.
space-phase-modulation-based-on-8-bit-microprocess
- 这是基于78k0八位微控制器的空间相位调制技术介绍以及主体程序-78k0 which is based on 8-bit microcontroller space phase modulation technology presentations and the main procedure
jihejiaozheng
- 该算法用于对畸变的图象进行整体的线性变换,达到对图象进行几何校正的目的,需要输入图象畸变参数和相位参数,供大家参考-the algorithm used for image distortion of the overall linear transformation, to achieve geometric image correction purposes, need input image distortion parameters and phase parameters for re
polyPhase16_ok
- 本文件是poly16相位调制方式的仿真实现方案，希望能对大家有所帮助-poly16 phase modulation method to achieve the simulation program, we hope to help
ALQE
- 用于产生解析信号，产生一个信号的同相和正交分量以及包络和相位-used to produce analytical signal, a signal generated in the same phase and quadrature components and the envelope and phase
Pronynalysis
- Prony分析是获取系统振荡模式特征的一种非常有效的方法，它可以通过给定输入信号下的响应直接估计系统的振荡频率、衰减、幅值和初相位。本文基于Prony算法提出一种用振荡模式能量级鉴别电力系统大干扰下主导低频振荡模式的方法。-Prony analysis acquisition system oscillation mode features a very effective way, It can set the input signal to the estimated direct resp
phasecorrelation
- 实现图像的相位相关匹配，该算法有一定的优点于其他算法相比。-images related to the phase matching, the algorithm has certain advantages compared to other algorithms.
phase_embed
- 这是本人自己遍的matlab程序，即对做过fft变换的相位嵌入水印的程序-this is my own times of Matlab procedures, that is done on the phase transformation fft watermark embedding procedures
fft_protect
- 傅立叶相位加密，用于图像加密，效果好，需要密钥图像，也在压缩包里。适用于灰度图象。-Fourier phase encryption for image encryption, which is good, need to key images, but also compressed bundle. Apply to the gray-scale image.
unps16
- 凌阳16位单片机控制AD9851芯片产生幅度可调，相位频率可控制的正弦波发生器（附带LCD128*64，4*4键盘驱动）-Sunplus 16 MCU control AD9851 chip adjustable rate, Phase control of the frequency sine wave generator (fringe LCD128 64,4 * 4 * Keyboard Driver)
DSP5_MATLAB
- 离散时间系统的相位、结构与状态变量的描述中的各个例子的程序，很不错的，希望对大家有用-discrete-time systems phase, structure and the state variables describing the various examples of procedures, very good. We hope to useful
PLL_PLV
- 锁相回路可视为一个输出相位和输入相位的回授系统用以同步输入参考讯号和回授后输出信号。并让其操作同样的频率。如(图一)所示，简单锁相回路[3,4]是由三个电路构成，分别为相位侦测器（Phase Detector）、回路滤波器（Loop Filter）、压控荡器（VCO）-phase-locked loop can be regarded as a phase output and input phase feedback system for synchronous reference input
xlt
- 电力行业通用的矢量图控件原码，属性为电压电流相位-power industry generic vectors control the original code, attribute to phase voltage and current
33103
- 一种双相位的数据传送格式，连续传送长波形的-a two-phase data transmission format for the transmission of long wave
qpskjm
- 通信中的QPSK相位调制建摸，其中考虑了多径和高斯的影响-Communication QPSK modulation phase modeling, which takes into account the multi-path effects and Gaussian