Up to now,the International GNSS Service Real-Time Service (IGS RTS) is able to provide real-time orbit/clock correction......

Finite element methods for the elliptic variational inequality of the second kind deduced fromfriction problems or nonli......

世界时(UT1)是大地测量、导航等应用领域必不可少的参数之一,当前利用国际地球自转服务(IERS)可以实现1天获取1个UT1参数,但是对于......