光盘资料(A Software-Defined GPS and Galileo Receiver -- A Single-Frequency Approach (Book))

粒子群算法解决背包问题。包含matlab 源程序，和一份报告。我的一份作业(Particle swarm algorithm to solve knapsack problem. Matlab source code included, and a report. I have a job)

说明：  傅里叶变换，FSERIES 返回傅里叶系列系数，代码中对参数有详尽的解释说明，方便看懂(Fourier transform, FSERIES back Fourier series coefficients, the code of the parameters detailed explanations, easy read)

设计一个简单的GUI界面，对导入的音频文件进行时域特性分析。计算其时域波形、平均幅度、短时能量、短时过零率。对该音频文件进行加噪处理，分析其时域波形变化。设定一个固定时长，对该音频添加回声并保存为“*.wav”格式文件。 对音频文件的时域分析是对音频文件进行传输、降噪及其他再编辑的基础。其中短时能量可用作清浊音区分的标准和语音起始点的判断。短时过零率可用作判断有声段与无声段和从背景噪声中提取语音信号。 (Design a simple GUI interface that time domain characteristics analysis on import audio files.Calculate the average time domain waveform, amplitude, short-time energy and short-time zero crossing ratio.Add to deal with the noise of the audio files, analyze the changes in the time domain waveform.To set a fixed time, to add the audio echo and saved as a *. Wav format file. The time domain analysis of the audio file was transmitted to audio files, noise reduction and other editor again.The short-time energy voiced distinguish between standard and can be used as a clear voice starting point judgement.Short-time zero crossing ratio can be used as a judgment audio segment and silent segment and extract speech signal background noise.)

说明：  合成孔径雷达成像中的距离多普勒算法，包括回波产生，脉冲压缩，距离徙动补偿等(Range Doppler algorithm for SAR imaging)

matlab维纳滤波器，初次尝试，请大家共同学习(matlab wiener filter, the first attempt, please learn together)

说明：  使用matlab对蓝牙调频通信系统进行仿真(Use matlab for Bluetooth FM communication system simulation)

说明：  蒙特卡罗方法计算面板数据单位根检验统计值之有限样本密度分布(Monte Carlo method panel data unit root test statistics of the density distribution of the limited sample)

Forecast ARIMA process

This topic presents a current blocking strategy of brushless DC (BLDC) motor drive to prolong the capacity voltage of batteries per charge in electric vehicle applications. The BLDC motor employs a simple torque hysteresis control (THC) that can offer a robust control and quick torque dynamic performance. At first, a mathematical modeling of BLDC motor and principle of torque hysteresis control will be described, so that the benefit offered by the proposed current blocking strategy can be highlighted. It can be shown that the current control method naturally provides current limitation, in which the current error (or ripple) is restricted within the pre-defined band-gap furthermore provide current protection. The benefit of proposed current blocking strategy will be highlighted such that it can prevent the current drained from the batteries when the torque demand is released to set to 0 Nm. The control scheme is validated and verified by the simulation and experimental results.

MUSIC算法，测量三个信号的达到方向角。输入信号可以调整，输入角度也可任意设定。(MUSIC algorithm, measuring three signal reaches direction angle. The input signal can be adjusted, the input angle can be arbitrarily set.)