Title :
Predictive coding of SAR phase history data
Author :
Magli, Enrico ; Olmo, Gabriella
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
Abstract :
In this article we evaluate the use of predictive coding for compression of SAR phase history data. We first show that the data are mainly correlated along range lines. Then, we exploit this result to define a new DPCM-based compression algorithm named RDPCM-BAQ. The performance of this algorithm is compared with that of BAQ on SIR-C/X-SAR data, showing a significant improvement in signal-to-noise ratio of up to 2 dB with respect to BAQ.
Keywords :
data compression; differential pulse code modulation; geophysical signal processing; geophysical techniques; linear predictive coding; phase coding; radar signal processing; remote sensing by radar; synthetic aperture radar; terrain mapping; BAQ; DPCM-based compression algorithm; RDPCM-BAQ; SAR; data compression; geophysical measurement technique; land surface; phase history; predictive coding; radar remote sensing; signal-to-noise ratio; synthetic aperture radar; terrain mapping; Algorithm design and analysis; Azimuth; Data compression; History; Predictive coding; Signal processing; Statistics; Synthetic aperture radar; Transform coding; Wavelet packets;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1025799
