Synthetic aperture radar raw data compression using wavelet packet transform and trellis coded quantization
Gowtham A. Tammana, Yuan F. Zheng, Robert L. Ewing · 2005
Performing some form of compression on synthetic aperture radar (SAR) data is necessary and important to curtail the downlink capacity and on-board storage requirements of a SAR system. In this paper, we present a transform coding approach for compression of SAR raw data using wavelet packet transform. Trellis coded quantization (TCQ) techniques are used to quantize the transform coefficients. A variation of TCQ implementation using a significance test is investigated. Simulation results on real SAR raw data show the improved performance of the proposed algorithm over standard block adaptive quantization (BAQ) technique.