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说明：  实际的数值是带有符号的，即可能是正数，也可能是负数，数值的正负之分如何实现？ 通过补码表示，且用一位符号位区别其正负即可。 而数值本身可以包括整数，也可以包括小数。那么，在计算机中是如何确定小数点的位置呢？ (The actual value is unsigned, which may be positive, it may be negative, positive and negative values divided how? By complement representation, and with a bit different from the positive and negative signs can be. The value itself can include an integer, it can also include decimals. Then, the computer is how to determine the decimal place?)

MATLAB学习资料，主要讲述MATLAB仿真相关内容，仿真必备学习资料，英文文章(MATLAB learning materials, focuses on the MATLAB simulation related content, the emulation essential learning materials, English articles)

The NAVSTAR GPS (NAVigation Satelllite Timing And Ranging Global Positioning System) is an all-weather, space-based navigation system developed by the U.S. Department of Defense to determine ones position, velocity, and time accurately in a common reference system on the Earth. The present constellation consists of nominally 24 satellites and provides global coverage with four to eight satellites simultaneously observed above 15 ? elevation.

这个同样是利用matlab编程，结合matlab遗传算法工具箱来实现遗传算法的功能(Matlab this is to use the same programming, combined with genetic algorithm matlab genetic algorithm toolbox to achieve the function of)

高阶谱分析工具箱（HOSA）中choices函数。(HOSA tool box s demo will call a function name choices. Copy this file to one of your MATLEB search path to fix the choices problem. )

Hilbert_huang 变换，计算经验模态函数，求瞬时频率(Hilbert_huang transform to calculate the empirical mode function, find the instantaneous frequency)

Gabor-function convolution masks are increasingly used in image processing and computer vision. This function simply computes the cosine and sine masks for a given width, period and orientation. The masks returned are properly normalised. It is not highly optimised - e.g. the symmetries are not used to reduce the computation. It is recommended that convolutions with these masks are done using CONVOLVE2 (available from Matlab File Exchange) to take advantage of their low rank. (Gabor-function convolution masks are increasingly used in image processing and computer vision. This function simply computes the cosine and sine masks for a given width, period and orientation. The masks returned are properly normalised. It is not highly optimised- e.g. the symmetries are not used to reduce the computation. It is recommended that convolutions with these masks are done using CONVOLVE2 (available from Matlab File Exchange) to take advantage of their low rank. )

说明：  遗传算法MATLAB源程序，其中用到了交叉选择变异等操作(MATLAB source of genetic algorithm, which uses cross-selection and mutation operations)

二维离散小波分解和重构，实现图像压缩和重构(performs a 2-D wavelet decomposition and reconstruction)

MATLAB学习matlab6.0数学手册(MATLAB learning matlab6.0 Mathematics Handbook)