Abstract
In this paper, we present the results of an experiment
aiming to compare measurements of atmospheric delay by
synthetic aperture radar (SAR) interferometry and GPS techniques
to estimates by numerical weather prediction. Maps of the
differential atmospheric delay are generated by processing a set
of interferometric SAR images acquired by the ENVISAT-ASAR
mission over the Lisbon region from April to November 2009. GPS
measurements of the wet zenith delay are carried out over the
same area, covering the time interval between the first and the last
SAR acquisition. The Weather Research and Forecasting (WRF)
model is used to model the atmospheric delay over the study
area at about the same time of SAR acquisitions. The analysis of
results gives hints to devise mitigation approaches of atmospheric
artifacts in SAR interferometry applications.
Anno
2013
Autori IAC
Tipo pubblicazione
Altri Autori
Pedro Mateus, Giovanni Nico, Ricardo Tome, Joao Catalao, Pedro M.A. Miranda
Editore
Institute of Electrical and Electronics Engineers,
Rivista
IEEE transactions on geoscience and remote sensing