Operational precise baseline determination for TanDEM-X DEM processing

This paper evaluates the quality of the operational TanDEM-X baseline products. Three critical components that affect the baseline quality, namely maneuver handling, time synchronization and eclipse handling, are identified and analyzed in the context of long-term baseline comparison. Based on the analysis, a baseline comparison between three official baseline products through the bi-static period are performed. The comparison shows a good match between the baselines, with a sub-millimeter standard deviation of the baseline difference and a very stable bias track.