New Approach to Discriminate Surface Dynamics and Atmospheric Effects in Single INSAR Pair

Abstract:
Atmospheric heterogeneities are serious corrupting effect in SAR observations, as they lead to variations of SAR signal path length. Respective phase variations on SAR interferograms preclude correct estimations of phase describing Earth surface dynamics. Various techniques of the atmospheric distortions reduction were proposed last years. They are based mostly on averaging the stacks of interferograms or incorporation of external measurements of atmosphere spatial properties. In our report we propose new approach to discriminate surface dynamics and atmospheric effects on a single INSAR pair, which does not require external information about the heterogeneities.