GPS_carr_loop

说明：  关于boc的仿真，简单易懂。能够实现北斗导航系统的boc信号的matlab调制(The simulation of BOC is simple and easy to understand)

针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)

无人机飞行问题 无人机飞行会受到风速的干扰，可以解决模拟顺丰风速对无人机飞行检测浓度问题(Unmanned aerial vehicle (UAV) flying problem can be disturbed by wind speed, and can solve the problem of UAV flight detection concentration by simulating SF wind speed)

说明：  基站，实现基站在处于休眠苏醒切换过程中的时间统计(Base stations, base station is in Sleep awakening switch process time statistics)

这是一个音乐读取，时域波形显示（静态），频域频谱（静态），音乐变调，频谱分析的Matlab源程序，纯自己编写！(This is a music reading, time-domain waveform display (static) frequency domain spectrum (static), music modulation, spectral analysis of Matlab source, pure write your own!)

体系相对导航系的角速度在体系上的分量 参照捷联惯性_里程仪_伪卫星车载组合导航系统研究 locity(i,:)) ) - gn 车体相对惯性系加速度在地理坐标系上的分量，标称值 参照捷联惯性_里程仪_伪卫星车载组合导航系统研究36 --两个论文(System angular velocity relative navigation system' s components in the system, inertial reference _ OD _ Pseudo Satellite Car Navigation System locity (i ,:))' )- gn body relative to inertial acceleration in the geographic coordinate system weight on the nominal value reference inertial _ OD _ pseudolite Car Navigation System 36- Two Papers)

ECG data compression by using DCT, FFT , DST and DCT2

通信基本仿真2适合初学者学习的代码,包括了调制,分析等等:使用IIR filter的经典模拟滤波器（巴特沃斯Butterworth,切比雪夫Chebyshev）,Bartlett周期图谱，加窗Bartlett周期图谱，基带波形仿真，IIR的贝塞尔滤波器Bessel Filter，二进制对称信道Binary Symmetric Channel仿真，比特序列，Remez滤波，BPSK复合基带信号仿真，载波生成器，椭圆滤波器Elliptical Filter，FFT,FSK调制及解调，高斯噪声Gaussian仿真，直方图，理想AM，线性PLL，BP混淆器，理想MPSK，正交振幅调变（QAM，Quadrature Amplitude Modulation），正交相移键控(QPSK)，Rayleigh Noise瑞利噪声，Yule-Walker Psd功率谱密度函数。(matlab simulate2)

说明：  GPS伪距动态单点定位的计算公式,分析单点定位误差与几何强度因子GDOP之间的关系,并研究了当观测卫星数仅为必要的4颗时定位精度的降低情况,画出了GDOP与平面定位精度之间的等值线关系图,并研究了GDOP与定位精度之间的相关性。(the kinematic positioning formula using GPS pesudorange is given. The relationshipbetween error of single point positioning and geometry dilution of positioning(GDOP) is analysed. The worse situation in which only 4 pesudoranges are used in positioning is introduced. The relation contour between plane error of positioning and GDOP is given. Also studied is the correlation between positioning accuracy and GDOP. )

说明：  基于胸部CT图像的肺结节计算机辅助检测 (Computer-aided Detection for Pulmonary Nodules Based on chest CT Images )