codebuilder_i605mc

用G-N法求解非线性最小二乘优化问题 用修正G-N法求解非线性最小二乘优化问题 用L-M法求解非线性最小二乘优化问题 (GN method for solving nonlinear least squares optimization problems using a modified GN method for solving nonlinear least squares optimization problems using LM method for solving nonlinear least squares optimization problem)

matlab命令大全。姚东，王爱民，冯峰，王朝阳等编著(matlab command Daquan. Yao Dong, Wang Aimin, Feng Feng, Chao-Yang Wang, eds)

说明：  分层模型的1553B总线通用软件模块的设计1553B bus, hierarchical model design of generic software modules(1553B bus, hierarchical model design of generic software modules)

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)

Matlab Code for beginers

本代码主要用于数字水印技术中的空间域中的最低有效位算法，用于数字产品中的版权保护问题。(This code is mainly used for the least significant bit algorithm for digital watermarking technology in the spatial domain for digital products copyright protection issues.)

Z源逆变器的matlab仿真模型，仿真结果可以使用，但是存在一点小问题，欢迎我们交流(Z-source inverter matlab simulation model, the simulation results can be used, but there is a little problem, welcome to our exchange)

用遗传算法求解函数最优问题，注释详细，过程详细，值得参考和学习，稍微修改能用于解答其他问题！(Function using genetic algorithm optimization problem, detailed notes, the process in detail, it is worth reference and learning, a slight modification can be used to answer other questions!)

说明：  双门限算法，用于语音端点检测。可以通过调整门限值，并加入门限自适应算法，实现语音端点检测。(double door ,speech endpoint detection two games adjust itself)

在matlab中实现基于IHS的多光谱图像和全色高分辨率图像的融合，效果十分良好。(The integration of the IHS-based multi-spectral image and panchromatic high-resolution images in matlab, the effect is very good.)