radar

无线衰落信道之瑞利衰弱的仿真 可以做出多径瑞利的仿真 (Simulation of Rayleigh weak)

COMPUTATION OF DFT SEQUENCES

kalman filter for tracking a single target with one dimension state and one dimension mesurment

用matlab实现广义最小二乘的数值运算，欢迎大家参考。(Achieve numerical computation of generalized least squares)

本文针对基于经验模态分解ＥＭＤ的时空滤波器存在的固有模态函数分量中频率混叠交叉导致有用信号与噪声一起被滤除的问题结合小波在时间尺度两域表征信号局部特征的特性提出了一种基于能量估计实现ＥＭＤ分解层数确定(In this paper, based on empirical mode decomposition EMD temporal filter mode functions inherent component of cross-frequency aliasing and noise together lead to useful signal is filtered in the time scale of the problem combined with wavelet domain characterization of two local features of the signal characteristics of proposed achieve energy estimation based on EMD decomposition level determined)

This function implements brute force bactracking to solve the knapsack problem.

大功率分布式发电系统通常采用三相逆变器并网，由于三相逆变器系统参数耦合，传统方法设计的控制器算法复杂。在d。q坐标系下为双模式三相并网逆变器的独市和并网模式建立了数学模型．采用新的解耦方法，依据独立和并网模式控制系统超调量越小，模式切换过程中被控量的波动越小。切换过程就越平滑的原则。完成了两种模式的控制器设计，即分别应用积分环节、比例环节即可将独立模式和并网模式整定成典型的二阶系统，控制器设计简单．能取得优良的动、静态特性。仿真与实验验证了设计方法的正确性和可行性。(It is necessary to research on three—phase grid-connected inverter which a8 an important part of distributed generation．The parameters of three—phase inverter are coupling．The traditional design algorithm of the controller is complicated．The mathematicM models of stand—alone mode and grid—connected mode are established in d，q fhme． Based on the principle that the lower overshoot of the controller system，the smaller fluctuation of the controlled vailables， the smoother in transfer，controllers of two modes are designed separately，as integral and proportional regulators are separately added to stand-alone mode and g而d—connected mode．The controller has good dynamic and static char— acteristics．Simulation and experimental results varify the correctness and feasibility of the proposed method．)

RAKE receiver for direct-sequence spread spectrum systems Simulink model of a simple direct-sequence spread spectrum system with RAKE reception(RAKE receiver for direct-sequence spread spectrum systems Simulink model of a simple dir ect- sequence spread spectrum system with RAKE reception)

一个利用matlabGUI设计的学生成绩查询的小系统，还需要进一步完善。( Type text or a website address or translate a document. Cancel Yīgè lìyòng matlabGUI shèjì de xuéshēng chéngjī cháxún de xiǎo xìtǒng, hái xūyào jìnyībù wánshàn. Example usage of "": automatically translated by GoogleChinese (Simplified)EnglishSpanish AlphaA using matlabGUI design student achievement query system, still need further improvement.)

信号用m序列进行扩频，成型滤波和BPSK调制后经过信道发送到接收端，接收端进行解扩解调(Using m sequence spread spectrum signal, after forming filter and BPSK modulation channel is sent to the receiver, the receiver to enlarge demodulation )