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Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document. A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.

本程序是希尔伯特黄变换中的EMD分解得到IMF分量的源程序(This procedure is the Hilbert-Huang transform EMD decomposition IMF component of the source)

DEKLPHI THIS WORLD IS THE FUTURE

描述了OFDM调制解调中的频率同步的算法的方法和相应的代码(Describe the method of frequency synchronization in OFDM modulation and demodulation algorithm and the corresponding code)

模糊自整定PID控制器设计。 本资料含有详细的PID控制器算法M文件、Simulink模型搭建、模糊控制器设计以及相应的技术文档分析。相信对您一定很有帮助(Fuzzy self-tuning PID controller design. This information contains details of the PID controller algorithm M files, Simulink models to build, fuzzy controller design and analysis of relevant technical documentation. I believe you must be helpful)

高速目标LFM雷达回波模拟与HRRP成像(High-speed target LFM radar echo simulation and imaging HRRP)

说明：  AM by matlab program

t is needed to correctly display a document when an author does not embed the appropriate font into the document. It is also needed when the author does embed the font, but the reader of the document wishes to interact in some way with its content, for example, by collaborating, commenting, or filling out forms.

说明：  最优化方法（防止限于局部最优等情况时）验证函数，以确定方法的有效性(Test functions)

对不理想环境下信号DOA（求根MUSIC算法）的性能仿真分析。并分析其与ＭＵＳＩＣ算法的优越之处。(The signal is not an ideal environment for DOA (Roots MUSIC algorithm) of the performance simulation. And its relationship with the strength of MUSIC algorithm.)