The variable bit rate coding scheme designed for Sentinel-1 and named Flexible Dynamic Block Adaptive Quantizer (FDBAQ) is presented in this paper. FDBAQ technique adapts the number of quantization bits ac-cording to a local estimate of the signal-to-noise ratio (SNR) at the receiver. Its performance is shown to be su-perior to the currently used BAQ compressor [1] in terms of SNR related to the compression rate. An overview of the design optimization, of the on-board and on-ground operations and of the system perfor-mances is provided. Results of simulations have been based on a 16-bit mosaic of reflectivity in C-band based on ENVISAT Global Monitoring data [2].
Sentinel-1 Flexible Dynamic Block Adaptive Quantizer
D'ARIA, DAVIDE;MONTI-GUARNIERI, ANDREA VIRGILIO;
2010-01-01
Abstract
The variable bit rate coding scheme designed for Sentinel-1 and named Flexible Dynamic Block Adaptive Quantizer (FDBAQ) is presented in this paper. FDBAQ technique adapts the number of quantization bits ac-cording to a local estimate of the signal-to-noise ratio (SNR) at the receiver. Its performance is shown to be su-perior to the currently used BAQ compressor [1] in terms of SNR related to the compression rate. An overview of the design optimization, of the on-board and on-ground operations and of the system perfor-mances is provided. Results of simulations have been based on a 16-bit mosaic of reflectivity in C-band based on ENVISAT Global Monitoring data [2].| File | Dimensione | Formato | |
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