QPSK

低通巴特沃斯滤波器设计求阶数，适合广大学生们参考，(Low-pass Butterworth filter design requirements order, for the majority of students reference)

网络的三相计算机潮流案例，基于MATLAB 的计算机潮流及其可视化(Three-phase current case computer networks, computer-based trend MATLAB and Visualization)

用于实现拉格朗日差值算法，可用于GPS星历计算(For the Lagrange interpolation algorithm, can be used for GPS ephemeris )

SERPSK SERPAM SERQAM

说明：  这份资料是关于MATLAB的初级介绍，对于初学者非常实用，如果想快速学会使用matlab,建议大家先看看这份资料。谢谢！(This information is on the MATLAB primary introduction is very useful for beginners, if you want to quickly learn how to use matlab, suggest that you take a look at this information. Thank you!)

（1）员工各种信息的输入,包括员工的基本信息、学历信息、婚姻状况信息和职称等； （2）员工各种信息的修改； （3）对于转出、辞职、辞退、退休员工信息的删除； （4）按照一定的条件,查询,统计符合条件的员工信息； （5）至少应该包括每个员工详细信息的查询，按婚姻状况查询、学历查询、工作岗位查询等； （6）至少应该包括按学历、婚姻状况、岗位、参加工作时间等统计各自的员工信息； （7）对查询,统计的结果打印输出。 ((1) the importation of all kinds of information employees, including employees of the basic information, education information, marital status and title information, etc. (2) the staff changes all kinds of information (3) for the transfer, resignation, dismissal, retirement of employee information deleted (4) in accordance with certain conditions, query, statistics eligible employees (5) at least every employee should include details of inquiries, according to marital status inquiries, academic information, job inquiries, etc. (6) should include at least according to their academic qualifications, marital status, status, statistics, etc. to participate in the working hours of their employees (7) of the query, the results of statistical printout.)

Identification cards — Contactless integrated circuit(s) cards — Proximity cards — Part 4: Transmission protocol(Identification cards- Contactless integ rated circuit (s) cards- Proximity cards- Part 4 : Transmission protocol)

混沌映射庞加莱界面Matlab程序源码码，程序源码虽小，短小精悍 (Chaos mapping Poincare interface the Matlab program source code, the program source code is small, dapper)

过于滤波，采用卡尔曼滤波有关的方法。比较简单。打开文件，希望有用(kalman filter)

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