3Bessis J L, B4quignon J, Mahmood A. The International Charter "Space and Major Disasters" initiative. Acta Astronautica, 2004, 54: 183-190.
4Mahmood A, Cubero-Castan E, Platzeck G, et al. South American perspective of the International Charter "Space and Major Disasters" . Advances in Geosciences, 2008, 14: 13-20.
5Bessis J L, B~quignon J, Mahmood A. Three typical examples of activation of the international Charter "Space and Major Disasters" . Advances in Space Research, 2004, 33: 244-248.
6Lee J S. Refined Filtering of Image Noise Using Local Statistics. Computer Graphics and Image Processing, 1981, 15(4): 380-389.
7Lee J S. Speckle Analysis and Smoothing of Synthetic Aperture Radar Images. Computer Graphics and Image Processing, 1981, 17(1): 24-32.
8Lee J S. Speckle Suppression and Analysis for Synthetic Aperture Radar Images. Optical Engineering, 1986, 25(5): 636-643.
9Kuan D T, Sawchuk A A, Strand T C, et al. Adaptive Noise Smoothing Filter for Images with Signal-Dependent Noise. Pattern Analysis and Machine Intelligence, IEEE Transactions on, 1985, PAMI-7(2): 165-177,.
10Frost V S, Stiles J A, Shanmugan K S, et al. A Model for Radar Images and Its Application to Adaptive Digital Filtering of Multiplicative Noise. Pattern Analysis and Machine Intelligence, IEEE Transactions on, 1982, PAMI-4(2): 157-166.