PSCAD

qpsk调制的MATLAB实现，串并变换，载波相乘，两路信号相加，实现qpsk调制(MATLAB modulation qpsk realized, string and transform, carrier multiplication, the sum of the two signals to achieve modulation qpsk)

说明：  要：分析和研究了授权用户和认知用户共享频谱的一种算法的性能。 针对阴影效应或信道深衰落时，单用户频谱感知算法无法识别是频带未被 使用还是信道处于深衰落的情况，在频谱感知功率控制算法上进行了改进， 以克服这种算法的不足。改进后的算法能有效地控制认知用户的发射功率， 避免对授权用户产生有害的干扰。仿真结果表明改(To: analysis and research of the authorized users to share spectrum users and a cognitive performance of the algorithm. For the shadow effect or deep fading channel, the single-user spectrum sensing algorithm can not identify a band or a channel has not been used in the case of deep fading, the spectrum sensing power control algorithm has been improved on, to overcome the deficiencies of this method. The improved algorithm can effectively control the cognitive user' s transmit power, to avoid harmful interference with authorized users. Simulation results show that the change)

M-PSK的MATLAB代码。MPSK,MATLAB代码(The MATLAB M-PSK code. MPSK, MATLAB code)

This example descibles background subtraction algorithm. video was recorded at sanfrancisco

GNSS接收机主程序Matlab源代码 包括：捕获、跟踪、解算定位(GNSS Matalab Receiver)

BPSK.QPSK.16QAM.64QAM调制解调(BPSK.QPSK.16QAM.64QAM modem)

在飞机无源跟踪中，用扩展卡尔曼滤波算法来实现平面变角速度模型。(Passive tracking the aircraft, using extended Kalman filter algorithm to achieve the flat model of variable angular velocity.)

基于中值滤波器的红外弱小目标检测，以9*9为滤波窗口大小(Median filter-based infrared small target detection, to 9* 9 for the filtering window size)

说明：  matlab时针程序，能实现双时针的配合旋转，历时24小时(The matlab clockwise procedures to achieve dual-clockwise with the rotation, which lasted 24 hours)

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.)