bic_audio_segment

这是用matlab编的代码，实现的功能是可以方便的给定一段信号，画出它的频域的频谱图，对写论文有帮助(This is compiled with the matlab code, function is convenient for a given period of the signal, draw its frequency spectrum chart, to help write the paper)

时间序列分析中常用到的matlab代码，非常多哦。(Commonly used time series analysis of the matlab code, oh many.)

说明：  这是捷联惯导系统一阶、二阶微分方程法和一阶、二阶四元数法和完整解之间的误差代码(This is the sins of the first order, second order differential equation method and first order, second order quaternion method and the error between the full code solution)

MATLAB CODE FOR SPEECH PROCESSING

simulate the ofdm system

卫星轨道机动模拟仿真matlab程序，应用GPS数据进行具体分析。(Matlab simulation of satellite orbit maneuver, application specific analysis of GPS data.)

说明：  对CT图像进行radon变换以及IRADON反变换，并画出弦图，实现环形伪影的仿真(CT images of the radon transform and IRADON inverse transform, and draw the chord diagram to realize the simulation of ring artifacts)

用巴特沃斯法实现数字带通滤波器的设计,用matlab一步一步实现，以数字低通滤波器的设计为基础。(Apply butterworth to design DF.)

计算SENSE重建图像中的g-factor,这是并行磁共振成像SENSE算法的关键一步(G-factor is the metric to quantify the amplificaiton of noise power in reconstructing SENSE accelerated image. The detail was presented in Pruessmann s 1999 Magn. Reson. Med. paper. In theory, g-factor is the pixel-by-pixel ratio of the image variance between the SENSE reconstructed image and un-accelerated image. And g-factor depends on: (1) the k-space data trajectory (2) coil sensitivit profiles (3) noise covariance matrix of the array coil)

pid，神经网络，模糊控制,专家控制，一些有用的案列(pid, neural networks, fuzzy control, expert control, some useful text columns)