講演名 | 2005-03-05 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)) , |
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抄録(英) | 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. |
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キーワード(英) | Speckle / cross-correlation function / multilook processing / sea surface / scene coherence time |
資料番号 | SANE2004-118 |
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研究会 | SANE |
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開催期間 | 2005/2/26(から1日開催) |
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申込み研究会 | Space, Aeronautical and Navigational Electronics (SANE) |
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本文の言語 | ENG |
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タイトル(英) | 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)) |
サブタイトル(和) | |
キーワード(1)(和/英) | / Speckle |
第 1 著者 氏名(和/英) | / Kazuo Ouchi |
第 1 著者 所属(和/英) | Department of Environmental Systems Engineering, Kochi University of Technology |
発表年月日 | 2005-03-05 |
資料番号 | SANE2004-118 |
巻番号(vol) | vol.104 |
号番号(no) | 699 |
ページ範囲 | pp.- |
ページ数 | 6 |
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