Title :
Dyadic resolution multilook image generation by wavelet packettransform correlation of complex SAR signals
Author :
Bhattacharya, C.
Author_Institution :
DEAL (DRDO), Dehradun
Abstract :
We present a signal processing approach for generation of multilook SAR intensity images at dyadic scales of resolution. Orthogonal subband decomposition inherent in discrete wavelet packet transform is utilized in shift-invariant manner to produce multiresolution complex SAR images. The symmetry of detailed subband spectra is utilized in separating the disjoint spectra to produce multilook image. Analytical results and sample imagery of diffused reflection are presented.
Keywords :
image resolution; radar imaging; radar resolution; speckle; synthetic aperture radar; wavelet transforms; complex SAR signals; diffused reflection; discrete wavelet packet transform; dyadic resolution multilook image generation; multilook SAR intensity images; multiresolution complex SAR images; orthogonal subband decomposition; shift-invariant manner; signal processing; subband spectra; wavelet packet transform correlation; Azimuth; Discrete wavelet transforms; Image generation; Image resolution; Multiresolution analysis; Signal processing; Signal resolution; Spatial resolution; Speckle; Wavelet packets;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4422860
