Abstract: In practice, the coordinates necessary in geometric rectification are usually derived from medium scale maps such as

Abstract: In the case of traditional Global Positioning System (GPS) data processing algorithms, systematic errors in GPS measurements cannot be eliminated completely, nor accounted for satisfactorily. These systematic errors can ...

Abstract: The Thai geodetic network has been regularly observed with GPS since 1994. The continuous tectonic motions in Thailand located on the Sundaland block are well determined with uncertainties