Static filtering and collocation in successive steps for measurements with colored noises
(1.Liaoning Technical University, Fuxin 123000, China2.Xuzhou Normal University, Xuzhou 221009, China)
Abstract: The theory of static filtering in successive steps with colored noises is ample scope for its application in the procedure of GPS data processing. A majority of error and round-cycle distinctness in the measurements of GPS carrier phase can be eliminated through three times of differential calculations of stations, satellites and epochs, in which the cycle beatings became isolated values. The observation error of three-differentials in the intervals between epochs results in block diagonal matrixes in the covariance matrixes, so that the desired matrixes occupy too large memory and the processing time is too long. Therefore, by using the theory of static filtering in successive steps with colored noises, the interrelation can be eliminated and can save the processing time and memory.
Key words: colored noise； static filtering in successive steps； three-differentials measurements in GPS carrier phase