《GPS测量原理及应用》第3版，第50页中的课本示例的matlab代码实现。用于计算卫星信号发射时刻的卫星瞬时坐标。-GPS measurement principle and application 3rd edition the 50 textbook example matlab code. Satellite instantaneous coordinates used to calculate the emission time of the satellite signal.

此代码是《现代电力系统分析》王锡凡版的潮流优化计算的相关内容内点法的实现。-This code is the realization of analysis version of Wang sifan flow optimization related content calculation of interior point method for modern power system.