Flexible Dynamic Block Adaptive Quantization for Sentinel-1 SAR Missions

被引：44

作者：

Attema, Evert ^{[1
]}

Cafforio, Ciro ^{[2
]}

Gottwald, Michael ^{[3
]}

Guccione, Pietro ^{[2
]}

Guarnieri, Andrea Monti ^{[4
]}

Rocca, Fabio ^{[4
]}

Snoeij, Paul ^{[1
]}

机构：

[1] ESA, ESTEC, NL-2201 Noordwijk, Netherlands

[2] Politecn Bari, I-70125 Bari, Italy

[3] Astrium GmbH, D-88039 Friedrichshafen, Germany

[4] Politecn Milan, I-20133 Milan, Italy

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2010年 / 7卷 / 04期

关键词：

Block adaptive quantizer; data compression; quantization; synthetic aperture radar (SAR); RAW DATA; COMPRESSION;

D O I：

10.1109/LGRS.2010.2047242

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The letter introduces a novel quantizer suited for medium to high-resolution synthetic aperture radar (SAR) systems, like the forthcoming SENTINEL-1 SAR. The Flexible Dynamic Block Adaptive Quantization (FDBAQ) extends the concept of the Block Adaptive Quantization (BAQ), used in spaceborne SAR since the Magellan mission, by adaptively tuning the quantizer rate according to the local signal-to-noise-ratio (SNR). A design is presented aiming to optimize the average bit-rate, while constraining the minimum SNR. FDBAQ optimized performance is then evaluated using backscatter maps derived from ENVIronment SATellite (ENVISAT) data.

引用

页码：766 / 770

页数：5

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