Transformation of terrestrial survey data to Doppler satellite datum

Doppler satellite observations have been used to determine the positions of 37 sites that were part of a network occupied by BC-4 cameras. Analysis of the Doppler observations by fitting orbits to 48-hour spans of data yielded positions for the sites that are consistent with the results of geometric analysis of the camera observations. Analysis of the data for the 37 sites provided shifts bringing 26 local datums to a world geodetic system. The estimated accuracy of the Doppler datum is about 1.5 m in each component of station position with a probable scale bias of 1 ppm.