On the Cross-Correlation of Speckle Patterns in Multilook SAR Images of Dynamic Sea Surfaces(Remote sensing/Radar (2), Workshop for Space, Aeronautical and Navigational Electronics (WSANE 2005))
スポンサーリンク
概要
- 論文の詳細を見る
A general integral expression is derived and discussed for the interlook cross-correlation function (CCF) of speckle patterns in SAR images processed by using partially overlapped subapertures. It is shown that, under the white noise approximation for the backscattered field, the CCF of the interlook speckle intensity patterns is given by the squared modulus of the autocorrelation function of the amplitude weighting function of subapertures where the time lag is the center time difference. It is also shown that the CCF of the interlook speckle patterns is independent of the surface coherence time of sea surface. The integral expression for the intensity CCF is then evaluated for a rectangular weighting function, and comparison is made with the JERS-1 L-band and RADARSAT-1 C-band SAR images of sea surface to test the theory. The CCFs estimated from the JERS-1 SAR data show excellent agreement with the theory, and good agreement is obtained with the RADARSAT-1 data.
- 社団法人電子情報通信学会の論文
- 2005-02-26
著者
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Ouchi Kazuo
Department Of Computer Science National Defense Academy
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Wang Haipeng
Department of Environmental Systems Engineering, Kochi University of Technology
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Wang Haipeng
Department Of Environmental Systems Engineering Kochi University Of Technology
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Ouchi Kazuo
Department Of Environmental Systems Engineering Kochi University Of Technology
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