Exercise6

海水状态方程的编程实现包括高压海水状态方程等等声速的计算。(Programming seawater equation of state, including high-pressure seawater equation of state, etc.)

spectral subtraction

自适应窗口平滑,萨达是拉发牢骚复旦大学，说什么至少20个字？？(adaptive window smoothing)

说明：  kurtogram是一种四阶谱分析工具，用于检测和表征信号中的非平稳性。可用于轴承的故障诊断(The kurtogram is a fourth-order spectral analysis tool elaborated for detecting and characterising nonstationarities in a signal. It relies on the assertion that each type of transient is associated with an optimal (frequency/frequency resolution) dyad (f ; Df) which maximises the kurtosis. The Fast Kurtogram computes the kurtogram over a grid that finely samples the (f ; Df) plane. Its complexity is on the order of N log N. This is the "plain vanilla" code used in paper: J. Antoni, Fast Computation of the Kurtogram for the Detection of Transient Faults, Mechanical Systems and Signal Processing, Volume 21, Issue 1, January 2007, Pages 108-124.)

说明：  matlab工具箱系列- othercolor配色工具包(Matlab toolbox series - other color matching Toolkit)

仿真对象如下： 其中， v( k )为服从N (0,1) 分布的白噪声。输入信号u ( k) 采用M 序列，幅度为 1。M 序列由 9 级移位寄存器产生，x(i)=x(i-4)⊕x(i-9)。 选择如下辨识模型： 加权阵取Λ = I。 衰减因子β = 0.98，数据长度 L = 402。 辨识结果与理论值比较，基本相同。辨识结果可信 (he simulation object is as follows: among them, v (k) to obey N (0, 1) distribution of white noise. The input signal u (k) using M sequence, amplitude is 1. M sequence by 9 level shift register generation, x (I) = x (I- 4) ⊕ x (I- 9). Choose the identification model: weighted array take Λ = I. Attenuation factor β = 0.98, the data length L = 402. Identify the theoretical calculation and comparison, basically the same. Identification results are reliable)

MATLAB语言常用算法程序集，希望可以对大家有用！！！！1(MATLAB language commonly used algorithm for the assembly, hoping to be useful for everyone! ! ! ! 1)

单信道OOFDM单边带传输Matlab代码(Single-channel single-sideband transmission Matlab code OOFDM)

kalman一维滤波，采用两点差分法确定初始值，并仿真出不同初值情况下的估计效果(the fiter base on kalman)

rayleigh maximum likelihood filter with gradient of image used as tuning parameter