TUTCRIS - Tampereen teknillinen yliopisto


Blind estimation of speckle variance in synthetic aperture radar images



Otsikko2015 International Conference on Antenna Theory and Techniques: Dedicated to 95 Year Jubilee of Prof. Yakov S. Shifrin, ICATT 2015 - Proceedings
KustantajaThe Institute of Electrical and Electronics Engineers, Inc.
ISBN (painettu)9781479985579
DOI - pysyväislinkit
TilaJulkaistu - 25 kesäkuuta 2015
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaInternational Conference on Antenna Theory and Techniques -
Kesto: 1 tammikuuta 1900 → …


ConferenceInternational Conference on Antenna Theory and Techniques
Ajanjakso1/01/00 → …


A task of blind estimation of multiplicative noise (speckle) variance in multi-look images acquired by radars with synthesized aperture array is considered. It is shown that there are several factors affecting accuracy of such estimation. The main of them are spatial correlation of the speckle, complexity of an analyzed image and peculiarities of a method used. Spatial and spectral domain approaches are analyzed. It is shown that for both approaches spatial correlation of the speckle is to be estimated and taken into account. Results for real life TerraSAR-X data are presented as illustrations and for analyzing methods' accuracy.