Speckle and thermal noise reduction techniques for SAR interferogram
- International Institute for Aerospace Survey and Earth Science (ITC), Enschede (Netherlands)
Thermal and speckle noise is an obstacle to generating digital elevation model (DAM) from interferograms by 2-D phase unwrapping of Interferometric SAR (INSAR). Multi-look processing as a traditional method to reduce speckle noise is addressed briefly in this paper. Alternatively, we investigate the box filters in depth, as it deals with the single complex images more flexible in the complex image domain than in the frequency domain. Several Box filters are proposed and the comparison between these filters is made to illustrate the noise reduction by implementation of filtering techniques. Window size selection of the box filters is examined in details. Simulation results and raw data testing results are presented to confirm the validity of the filtering algorithms proposed in this paper.
- OSTI ID:
- 390725
- Report Number(s):
- CONF-960613-; TRN: 96:004292-0030
- Resource Relation:
- Conference: 2. international airborne remote sensing conference and exhibition, San Francisco, CA (United States), 24-27 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the second international airborne remote sensing conference and exhibition: Technology, measurement & analysis. Volume III; PB: 870 p.
- Country of Publication:
- United States
- Language:
- English
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