Optimal block quantization for SAR data

Author

Guccione, Pietro ; Cafforio, Ciro ; Guarnieri, Andrea Monti

Author_Institution

Dipt. di Elettrotec. ed Elettron., Politec. di Bari, Bari, Italy

fYear

2010

fDate

10-14 May 2010

Firstpage

348

Lastpage

353

Abstract

A variable bit rate coding scheme designed for new generation SAR satellites is presented. This coding is based on previous schemes of Block Adaptive Quantizer (BAQ) and is intended as a possible improvement over Sentinel-1 FDBAQ. In this project, the number of quantizers is considered a design choice and the optimization is carried out looking for a set of reflectivity classes in which partition all the imaged areas on the Earth. Superior performances to those envisaged for Sentinel-1 FDBAQ are obtained in terms of SNR vs. average rate. Results come from simulations based on a 16-bit mosaic of C band reflectivity obtained by ESRIN from ENVISAT GM data and Wien University database of ENVISAT WSM radar reflectivity.

Keywords

optimisation; quantisation (signal); radar imaging; synthetic aperture radar; ENVISAT GM data; ENVISAT WSM radar reflectivity; SAR data; SAR satellites; SNR; Sentinel-1 FDBAQ; Wien University database; bit rate coding scheme; block adaptive quantizer; earth images; optimal block quantization; optimization; Bit rate; Channel capacity; Design optimization; Image quality; Phase noise; Quantization; Reflectivity; Satellites; Signal to noise ratio; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 2010 IEEE

Conference_Location

Washington, DC

ISSN

1097-5659

Print_ISBN

978-1-4244-5811-0

Type

conf

DOI

10.1109/RADAR.2010.5494597

Filename

5494597