spherical_harmonic

灰度拉伸是分段进行线性变换，对红色，绿色，蓝色三分量进行统一的分段线性变换，以增强图像对比度 (Gray-scale stretch is sub-linear transformation of the red, green, blue three-component unified piecewise linear transformation, to enhance the image contrast)

阵列信号处理中，能够识别空间多信号源的方向(Array signal processing, multiple sources to identify the direction of space)

洪水模型（圣维南方程的差分求解方法） All Right Reserved 城市公共安全应急系统中一维洪水演进及其可视化研究 (Flood model (method for solving the Saint-Venant Equations) All Right Reserved Urban Public Safety Emergency System of a Weihong Evolution and Visualization of water )

气象上使用很多 EOF分析 可以选择模式数 很好用的(Meteorological EOF analysis can choose to use a lot good use of the number of patterns)

triphase pulse width modulation

matlab 实现系统的参数计算，系统单位阶跃响应的相关参数计算。Matlab real system parameters, the system unit step response of the relevant parameters.(matlab realize the system parameters, the system unit step response of the relevant parameters. Matlab real system parameters, the system unit step response of the relevant parameters.)

DIRECT全局优化—无约束，基于MATLAB编制，可直接编译(DIRECT global optimization- non-binding, based on MATLAB preparation, can be directly compiled)

在DOA估计中，实际测量和理论肯定存在误差，比如通道误差，阵元位置误差，我们提出一种toplitz的预校正方法。(In the DOA estimate, the actual measurement and theory certainly exist errors, such as channel error, array (position errors, we put forward a kind of toplitz or calibration methods. )

bpsk bit and symbol generation

频率估计 1）产生一个单频实信号，加上一定信噪比的噪声。 2）对含噪声的信号进行频率估计。估计方法可以查阅相关文献。 3）统计估计出来的频率和真实频率之间的误差。 4）验证该频率估计算法在不同信噪比、不同数据长度下、不同频率时候的性能。 (Frequency estimation 1) produce a single-frequency real signal, plus a certain SNR noise. 2) noisy signal frequency estimates. Estimation method can access relevant literature. 3) out of the statistical estimation and frequency error between the true frequency. 4) Verify that the frequency estimation algorithm under different SNR, different data length, when the frequency of different properties.)