Abstract:
An onboard synthetic aperture radar (SAR) signal-data reduction algorithm called Flexible Block Adaptive Quantization (FBAQ) was developed in 1994 for the Advanced SAR (A...Show MoreMetadata
Abstract:
An onboard synthetic aperture radar (SAR) signal-data reduction algorithm called Flexible Block Adaptive Quantization (FBAQ) was developed in 1994 for the Advanced SAR (ASAR) on the ENVISAT satellite. This paper presents work done in a follow-on study that examined the impact of the data-reduction algorithm on the accuracy of two digital elevation models (DEM) produced by using the technique of repeat-pass SAR interferometry. All three allowable data compression ratios were investigated to determine the maximum compression ratio appropriate for SAR interferometry. Based on the scenes studied it was concluded that a reduction from 8 to 4-bits/sample was the maximum data reduction ratio appropriate for precision SAR interferometry, while 8 to 3-bits/sample and 8 to 2-bits/sample encoding were only appropriate for less-demanding wide-swath applications.
Published in: IEEE Transactions on Geoscience and Remote Sensing ( Volume: 36, Issue: 2, March 1998)
DOI: 10.1109/36.662741