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https://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 | Citation: | 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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