Joint PAZ and Tandem-X Missions Interferometric Performance

This paper analyzes the potential of the joint exploitation of the Spanish PAZ satellite and the two TerraSAR-X/TanDEM-X German satellites for interferometry. Since both platforms are almost identical and they were launched on the same orbital plane, similar images under the same geometry may be acquired by both missions. Several time series over different test sites with distinct land cover types in Germany and Spain that have been acquired by both missions are compared in order to evaluate the possibility of joint exploitation for interferometry. Results show no loss of performance on the in-terferograms obtained while combining satellites of both missions. This allows to effectively reduce the minimum revisit time from 11 days to 4 or 7 days.