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介绍了一种新的全光纤激光器，脉冲的，峰值功率不是很大(We report a narrow-linewidth (∆ λ = 0.4 nm) optical pulsed MOPA (master oscillator – power amplifier) source emitting 0.41 mJ pulses (1.5 kW peak power) in the eye-safe range (λ=1548 nm). Pulse duration and repetition rate were 90 ns and 5 kHz respectively. )

车牌号码识别检测程序，能快速有效检测车辆号码(License plate number recognition testing procedures, fast and effective detection of vehicle numbers)

说明：  PF9810功率仪 电压测量、电流测量、频率测试(PF9810 power meter voltage measurement, current measurement, frequency measurement)

经典的瑞利衰落信道仿真模型-jakes模型。程序可以修改不同的入射路径个数。仿真结果是不同入射路径个数的jakes模型和同分布的瑞利衰落的包络分布对比。直接运行“tu.m”(The classic Rayleigh fading channel simulation model-jakes model. Program can modify the number of incident path. The simulation results compare jakes model of different incident paths with distribution of Rayleigh fading.)

用matlab做的频谱分析代码，值得学习一下(Use matlab to do spectrum analysis code, it is worth learning about)

Matlab code for audio coding

说明：  利用matlab 对随机信号进行 hdb3码编码(liyong matlab duixinhao jinxing hdb3 Coding)

采用有限元法研究了圆形和椭圆形两种变形对称双脊波导对传输特性的影响。计算了脊的尺寸变化时的截止波长和单模 带宽，给出了主模场结构 图以及变形对截止 波长和单模带宽影响的关 系曲线 ，并分析 了传输特性 随对称脊波导结构尺寸变化的情况。通过这些研究，能够为变形双脊波导的应用和研究提供有价值的参考。 (Finite element method using the circular and elliptical symmetry Double Ridge Waveguide two deformation characteristics of the transmission. Dimensional changes were calculated when the ridge and single-mode cutoff wavelength bandwidth gives the dominant mode field pattern and deformation of single-mode cutoff wavelength and the bandwidth of the curve, and analyzed the transmission characteristics of ridge waveguide structure with symmetrical changes in size situation. These studies can be applied for the deformation Double Ridge Waveguide to provide a valuable reference and research.)

一个数学公式的简单应用在matlab中的实现，绝对值及平方等(Simple application of a mathematical formula in the matlab implementation, such as absolute value and square)

基于matlab的连续时间信号傅里叶级数分析已经matlab的实现(Matlab-based Fourier series of continuous-time signal analysis has matlab realization)