%0 Journal Article
%T Validation of a corner reflector installation at Côte d’Azur multi-technique geodetic observatory
%+ Institut de Physique du Globe de Paris (IPGP (UMR_7154))
%+ École nationale des sciences géographiques (ENSG)
%+ Géoazur (GEOAZUR 7329)
%+ Laboratoire sciences et technologies de l'information géographique (LaSTIG)
%+ École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)
%+ Institut National de l'Information Géographique et Forestière [IGN] (IGN)
%+ LIttoral ENvironnement et Sociétés (LIENSs)
%A Collilieux, Xavier
%A Courde, Clément
%A Fruneau, Bénédicte
%A Aimar, Mourad
%A Schmidt, Guillaume
%A Delprat, Isabelle
%A Defresne, Marie-Amélie
%A Pesce, Damien
%A Bergerault, Fabien
%A Wöppelmann, Guy
%< avec comité de lecture
%@ 0273-1177
%J Advances in Space Research
%I Elsevier
%8 2022-04
%D 2022
%R 10.1016/j.asr.2022.04.050
%K Observatories
%K Radar imaging
%K Reflection
%K Synthetic aperture radar
%Z Engineering Sciences [physics]/Signal and Image processingJournal articles
%X We present the procedure we followed to design an artificial corner reflector (CR) at the Calern site of Côte d'Azur Observatory (France). Although still few in number, such reflectors are an integral part of the Global Geodetic Observing System (GGOS) infrastructure. They can be used as a stable radar target in SAR images to connect local InSAR deformation maps to the global Terrestrial Reference Frame and for SAR absolute determination. During a test phase, the orientation of the CR was changed in order to be aligned toward all possible orbits of Sentinel-1A/1B satellites. On the different SAR images, the CR exhibits a high backscattering signal, and provides a Signal-to-Clutter Ratio larger than 26 dB. Since December 2018, the CR is specifically oriented toward the relative orbit 88. It is clearly detected as a PS in our InSAR analyses and as expected, the standard deviation of displacement measured on the CR is lower than on surrounding PS. A first local survey was performed to locate precisely this CR with respect to the existing geodetic instruments and annual campaigns have been carried out since then to insure its stability over time.
%G English
%L hal-03687316
%U https://hal-ensta-bretagne.archives-ouvertes.fr/hal-03687316
%~ INSU
%~ ENSTA-BRETAGNE
%~ AFRIQ
%~ CNRS
%~ IPGP
%~ OCA
%~ GEOAZUR
%~ UNIV-ROCHELLE
%~ UNIV-COTEDAZUR
%~ UNIV-PARIS
%~ UNIVERSITE-PARIS
%~ IGN-ENSG
%~ UNIV-EIFFEL
%~ U-EIFFEL