微波成象中多采樣率信號預處理方法
AN EFFICIENT MUL TIRATE PREPROCESSING TECHNIQUE FOR MICROWAVE IMAGING
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摘要: 在實際微波成象系統(tǒng)中,其模糊成象窗口往往遠大于目標成象窗口。據(jù)此我們提出一種有效的成象前多采樣率預處理方法。它可以很好地壓縮原始頻域數(shù)據(jù),降低成象處理數(shù)據(jù)量和對計算機存儲空間的要求,提高數(shù)字成象處理效率。為驗證該方法的可行性,文中最后給出了對微波暗室采集數(shù)據(jù)的處理結果。Abstract: A effective multirate preprocessing technique for microwave imaging is presented. This technique has the advantages of largely compressing the original collected spectral data and reducing computational complexity of some imaging alogrithms. Also, the preprocessed spectral data is suitable for off-line superresolution imaging processing.
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