Geos 3 S band Doppler and laser ranging data were acquired in the spacecraft altimeter calibration area during an extensive tracking campaign from August 1975 to March 1976. These data have been to support the calibration and evaluation of the Spaceflight Tracking and Data Network S band stations. The Goddard Space Flight Center laser systems are the reference for the precise positioning of the Doppler stations and for evaluating the recovery of Geos 3 arc height derived from Doppler tracking data. The solutions for station coordinates were determined from two-way and three-way Doppler data. A comparison of the solutions with survey in a local datum indicates a submeter precision for adjusted coordinate components. Arcs of one revolution were generated for Geos 3 from passes of two-way and three-way Doppler data. An evaluation for the calibration area shows arc height being recovered with an uncertainty of about 1 m. The Geos 3 beacon signal has also been tracked in the Doppler difference mode with a precision useful for geodetic purposes. In a solution for Geos 3 arc elements obtained using Doppler difference data, arc height has been recovered in the calibration area with an uncertainty of the order of 2 m.