基于散射模型的極化SAR數(shù)據(jù)分解
DECOMPOSITION OF POLARIMETRIC SAR DATA MODEL
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摘要: 該文提出一種描述極化SAR散射機(jī)制的散射模型。該模型由四種基本散射模型構(gòu)成:布拉格散射,偶次散射,奇次散射和體散射。該散射模型成功地描述了人造目標(biāo)和自然目標(biāo)對(duì)電磁波的散射機(jī)制。本文利用美國空氣動(dòng)力實(shí)驗(yàn)室(JPL)的機(jī)載多極化合成孔徑雷達(dá)系統(tǒng)獲得的SAR圖像數(shù)據(jù)對(duì)該模型進(jìn)行了檢驗(yàn),結(jié)果表明該散射模型可以很好地描述建筑和植被覆蓋地區(qū)對(duì)電磁波的散射機(jī)制。
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關(guān)鍵詞:
- 散射模型; SAR; 極化; 數(shù)據(jù)分解
Abstract: A model for the decomposition of polarimetric SAR data is developed in this paper. The model is assumed to consist of four backscatters: Bragg scatter, double-bounce scatter, odd-bounce scatter and volume scatter. This scattering model can successfully describe the mechanism of man-made and nature targets to scatter the incident electromagnetic wave. Using NASA/Jet Propulsion Laboratory (JPL) AirSAR data, the model has been tested, the result shows that, the model can describe the mechanism of polarimetric backscatter from buildings and vegetated areas quite well. -
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