Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/72689
Title: Improved multiple look technique
Authors: Yeo, T.S. 
Lay, W.L.
Lu, Y.H. 
Ng, W.E. 
Lim, I.
Zhang, C.B. 
Issue Date: 1996
Source: Yeo, T.S.,Lay, W.L.,Lu, Y.H.,Ng, W.E.,Lim, I.,Zhang, C.B. (1996). Improved multiple look technique. International Geoscience and Remote Sensing Symposium (IGARSS) 1 : 57-59. ScholarBank@NUS Repository.
Abstract: Synthetic aperture radar (SAR) images are contaminated by speckle noise. To suppress speckle, N lower resolution images (looks) are generated and averaged. This improves the signal-to-speckle noise ratio (SSNR) by a factor of √N, assuming that the corresponding pixels in these looks have equal mean intensities. In practice this assumption is not always valid and as such SSNR is degraded. A new adaptive technique that replaces the conventionally averaged resultant pixel with one of the N available pixels is found to produce better SSNR under these circumstances.
Source Title: International Geoscience and Remote Sensing Symposium (IGARSS)
URI: http://scholarbank.nus.edu.sg/handle/10635/72689
Appears in Collections:Staff Publications

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