noise_calculation

各种时间之间的转换，包括： 将GPS周和周内秒转换到公历时间， 由公历日期和GPS周内秒计算公历时间， 将公历GPS时间转换到GPS周和周内秒， 将简化儒略日转换到公历时间， 将公历时间转换到简化儒略日， 从儒略日计算公历时间， 将公历时间转换到儒略日等。(The conversion between various times, including: Conversion of GPS weeks and weeks to the calendar time, The calendar time is calculated from the date of the calendar and the seconds within GPS weeks. The GPS time of the calendar is converted to GPS weeks and within seconds, Julian day will simplify the conversion to the calendar time, The Gregorian calendar time to simplify the Julian day, Calculate the Gregorian calendar time from Julian day, Convert calendar time to Julian day.)

说明：  利用python编程的WOFOST作物模型，进行作物产量等模拟，实现wofost模型。(The WOFOST crop model programmed by Python was used to simulate crop yield and realize WOFOST model.)

混沌工具箱，能很好的学习和了解混沌，包括绘制吸引子、分岔图、lyapunov指数等(Chaos toolbox can learn and understand chaos well, including drawing attractors, bifurcation graphs, Lyapunov exponents, etc.)

说明：  对网上现有的产生m序列的线性反馈移位寄存器代码进行了修改，可以通过输入本原多项式向量，生成相应m序列(The existing linear feedback shift register code for m-sequence generation on the Internet is modified. The corresponding m-sequence can be generated by inputting the primitive polynomial vector)

利用状态方程在时域求解颤振速度 希尔道森气动力(aeroelastic flutter theodoson)

最全的GPS开发资料(the most comprehensive information on the development of GPS)

对电机进行基于spwm的变频调速系统，来实现对异步交流电动机的转速调整与三相电流调整(SPWM-based variable frequency speed regulation system for motor)

该软件是针对地下导线测量的改进方法设计的，即不必在地下对全站仪进行精确的点下对中，在全站仪上安装一个偏心测量盘，通过对实际测量结果进行归化改正，从而得到理论正确的测量结果。该软件需要用户输入指定参数，如偏心距e，实际测量角度β，实际测量距离L等，从而计算出理论测量角度α和理论测量距离S(The software is designed according to the improved method of underground traverse survey, which do not have the exact point of total station in the underground, the installation of a disc eccentricity measurement by total station, based on the actual measurement results are correct so as to obtain the measurement result of domestication, correct theory. The software requires the user to input the specified parameters, such as the eccentricity e, the actual measurement angle beta, the actual measurement distance L, etc., so as to calculate the theoretical measurement angle alpha and the theoretical measurement distance S)

全国公交车系统,可查询线路和车站, 寻找转车路线 (National Bus system will be able to access lines and stations, for interchange route)

说明：  graph cut segmentation method.