GPS antrosios klasės tinklo išlyginimo variantų palyginimas

Abstract

Lithuanian national second order GPS network was started to establish in 1994 after the measurements of Lithuanian national first order GPS network. 2969 vectors have been observed between 529 points in one and a half year. Main features of processing and adjusting the second order GPS network are studied in the paper. RMS of vectors and their distribution are presented. Mean RMS of the vector is 12 mm. Three parts with common points have been established in one and a half year and they form the second order GPS network. The discrepancies of the point coordinates of separately adjusted parts of network as well as discrepancies of the coordinates between common adjustment and separate parts of network are presented. Observations of part of network were repeated after one year in order to write the network parts. Mean discrepancies of the point coordinates were 11 mm, in comparison with previous observations.