compare_diff_RO

信息通过LDPC编解码误码率与未编码信息误码率比较(Comparison of BER between uncoded information and LDPC code)

3抽头迫零均衡器，5抽头迫零均衡器，以及恢复信号波形(3-tap zero forcing equalizer, the 5-tap zero forcing equalizer, and the restoration of the signal waveform)

超声速静压探针程序，采用有旋特征线法求解旋成体绕流流场，能给出任意马赫数下的壁面沿程压力分布情况，给出壁面静压恢复到自由来流静压的位置；(Supersonic hydrostatic probe program)

说明：  2. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请描述：自己用计算机产生的经典谱是正确的依据。(2. Regarding the doppler spectrum of the wireless channel, please answer the following questions: (1) in some wireless channels, doppler frequency shift will cause aliasing of the output signals of the wireless channel.Describe the various causes of aliasing; (2) there is a classic spectrum in the doppler spectrum in the wireless channel, please explain the mechanism of producing this spectrum shape; (3) please use Simulink tool to write code (s-function mode) to generate a single-path Rayleigh channel, whose doppler spectrum is the classical spectrum, in which the moving rate is 120km/h.And please describe: your own computer generated classical spectrum is the correct basis.)

说明：  单模光纤中相干接收QPSK信号应用了CMA算法的简单DSP示例，自带vpa仿真数据。(A simple DSP example of CMA algorithm is used to receive QPSK signals coherently in single-mode optical fibers, with VPA simulation data.)

这是一段模拟电荷法（scm)的matlab源程序，求解了超高压输电线路下方工频电场，仿真出了离地面1.5m处的二维电场模型，该程序经过验证，准确无误，谢谢。(This is a matlab source program of the simulated charge method (scm). It solves the power frequency electric field under the UHV transmission line and simulates the two-dimensional electric field model 1.5m above the ground. The program has been verified and is accurate. Thank you.)

在GPS中由日期计算年积日，同时可以由年积日计算出日期的方便快捷小程序(Calculated by the date of an annual day in the GPS calculated by an annual Day date convenient shortcut applet)

只采用lcmv算法的特性，运用在gps系统(Lcmv algorithm using only the features, the use of the gps system)

测绘gps数据处理中必须应用的内容，用于gps基线网平差(GPS adjustment)

说明：  matlab生成泰森多边形,并到处到txt文件，可用于晶体塑性有限元建模(generate a voronoi model and export to files)