cdma2000

Calculation of diffraction efficiency of rectangular phase grating (scalar theory)

Fourie series. Waves with sines and cosines. Square wave, sawtooth wave, etc. Very usefull.

在matlab，支持向量机，画roc ，AUPR曲线(roc,AUPR curve)

实现了以惯导为基准的组合导航系统，完成了组合导航系统的故障诊断(Achieved with a combination of inertial-based navigation system, the completion of the integrated navigation system fault diagnosis)

说明：  在离散余弦变换下实现信号的稀疏分解，matlab环境下可以简单实现(realize sparse Decomposition with dct)

对实验采集数据进行线性处理，使得最后得到的实验结果近似于一条直线。(Linear processing of experimental data collection, so that the final experimental results obtained approximates a straight line.)

mimo-ofdm系统中产生相关mimo衰落信道(produce relevant mimo mimo-ofdm fading channel system)

说明：  射线追踪技术在5G通信领域的应用展示程序。支持多种地图的射线追踪(Application of ray tracing technology in 5g communication field. Support ray tracing of multiple maps)

波数域算法又称为距离徙动算法（Range Migration Algorithm，RMA）或-算法，由Cafforio等提出。该算法分析距离处理后信号的二维频谱，通过二维频域匹配滤波进行相位补偿，在完成方位聚焦的同时完全校正距离徙动。由于其中的Stolt变换能克服SAR信号中距离徙动和SRC对斜距的依赖，因此波数域算法是一种理想的成像算法，尤其在处理大斜视角和长合成孔径的SAR数据时。但Stolt变换需要插值，降低了处理效率并引入额外的误差。(The wavenumber domain Algorithm is also called Range Migration Algorithm (RMA) or -algorithm, which is proposed by Cafforio et al.The algorithm analyzes the 2-d spectrum of the signal after the distance processing, carries out phase compensation through the 2-d frequency domain matching filter, and completely corrects the distance migration while completing the azimuth focusing.Because the Stolt transform can overcome the SAR signal range cell migration and SRC dependence on oblique distance, thus wavenumber domain algorithm is an ideal imaging algorithm, especially when dealing with large squint Angle and long synthetic aperture of SAR data.But Stolt transformation requires interpolation, reduces processing efficiency and introduces additional errors.)

说明：  计算彩色图像的熵，均方误差,根据熵的技术公式，对彩色图像分RGB进行统计计算(compute the entropy and rmse of rgb image)