ofdm_qpsk_simulation

example simulation s of analysis of electrical machinery and drive systems - Pual C. Krause - Ex4

语音增强之谱相减算法，加窗分帧频域处理，计算信噪比及画出波形对比。(Spectral subtraction speech enhancement algorithm, window-frame frequency domain processing to calculate the signal-to-noise ratio and draw the waveform comparison.)

说明：  四旋翼无人机是一种可以被遥控也可以在无人为控制的状态下执行预定任务的飞行器，与传统直升机相比四旋翼飞行器的机械结构简单，且具有高精度，灵活精度以及较低成本的特点，被广泛用于军事侦察，农艺播撒、快递派送、摄影工作等领域。四旋翼飞行器自身具有欠驱动、多变量、非线性等特性，在外界的噪声干扰情况下，增加了四旋翼无人机的不稳定以及控制系统的设计难度。所以对四旋翼飞行器的位姿控制的研究，可以开拓科研人员对控制算法以及滤波算法的认知，具有重要的研究意义。(Four-rotor UAV is a kind of aircraft that can be controlled remotely or perform scheduled tasks without human control. Compared with traditional helicopters, the Four-rotor UAV has simple mechanical structure, high precision, flexible precision and low cost. It is widely used in military reconnaissance, agricultural broadcast, express delivery, photography and other fields. Four-rotor UAV has the characteristics of under-actuation, multi-variable and non-linearity. Under the circumstance of external noise, the instability of Four-rotor UAV and the difficulty of control system design are increased. Therefore, the research on attitude control of Four-rotor aircraft can broaden the knowledge of control algorithm and filtering algorithm for researchers, and has important research significance.)

ACOUNT： 用于A 方向灯的时间显示，8 位，可驱动两个数码管； BCOUNT： 用于B 方向灯的时间显示，8 位，可驱动两个数码管。*/ module traffic(CLK,EN,LAMPA,LAMPB,ACOUNT,BCOUNT) output[7:0] ACOUNT,BCOUNT (reg[7:0] numa,numb reg tempa,tempb reg[2:0] counta,countb reg[7:0] ared,ayellow,agreen,aleft,bred,byellow,bgreen,bleft reg[3:0] LAMPA,LAMPB always @(EN) if(!EN) )

高频地波雷达线形天线接收阵列信号处理中的信号检测两维CA信号处理例程(HF radar linear array antenna to receive the signal processing two-dimensional signal detection signal processing routines, CA)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

CT滤波反投影重建算法，利用卷积计算，利用矩阵计算积分，比较简单的思想(CT reconstruction)

说明：  Doan in document with Matlab Code 2 MIMO

函数实现对InSAR复相位信号的基于局部频率估计的“斜坡自适应滤波” 此滤波方法特别适用于InSAR相位图滤波，能在滤除噪声的同时最大限度地保留有用信息(This matlab function is for InSAR phase filtering,usually called "slope adapt filter".It is based on local frequency estimation.)

包含较为多的matlab和stk混合编程资料(Contains the matlab and stk mixed programming information)