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雙站前視低頻超寬帶SAR的快速因式分解后向投影算法成像處理

馮東 安道祥 謝洪途 黃曉濤

馮東, 安道祥, 謝洪途, 黃曉濤. 雙站前視低頻超寬帶SAR的快速因式分解后向投影算法成像處理[J]. 電子與信息學(xué)報(bào), 2016, 38(4): 941-949. doi: 10.11999/JEIT150736
引用本文: 馮東, 安道祥, 謝洪途, 黃曉濤. 雙站前視低頻超寬帶SAR的快速因式分解后向投影算法成像處理[J]. 電子與信息學(xué)報(bào), 2016, 38(4): 941-949. doi: 10.11999/JEIT150736
FENG Dong, AN Daoxiang, XIE Hongtu, HUANG Xiaotao. Fast Factorized Back Projection Algorithm for Bistatic Forward-looking Low Frequency Ultra Wide Band SAR Imaging[J]. Journal of Electronics & Information Technology, 2016, 38(4): 941-949. doi: 10.11999/JEIT150736
Citation: FENG Dong, AN Daoxiang, XIE Hongtu, HUANG Xiaotao. Fast Factorized Back Projection Algorithm for Bistatic Forward-looking Low Frequency Ultra Wide Band SAR Imaging[J]. Journal of Electronics & Information Technology, 2016, 38(4): 941-949. doi: 10.11999/JEIT150736

雙站前視低頻超寬帶SAR的快速因式分解后向投影算法成像處理

doi: 10.11999/JEIT150736
基金項(xiàng)目: 

國(guó)家自然科學(xué)基金(61571447, 61201329)

Fast Factorized Back Projection Algorithm for Bistatic Forward-looking Low Frequency Ultra Wide Band SAR Imaging

Funds: 

The National Natural Science Foundation of China (61571447, 61201329)

  • 摘要: 雙站前視低頻超寬帶(UWB)SAR兼具雙站前視的復(fù)雜成像構(gòu)型和低頻UWB的強(qiáng)距離方位耦合兩個(gè)特點(diǎn),因此極大地增加了實(shí)現(xiàn)高精度成像處理的難度。針對(duì)這個(gè)問題,該文提出一種基于快速因式分解后向投影(FFBP)算法的雙站前視低頻UWB SAR成像處理方法。首先,基于雙站前視低頻UWB SAR的成像幾何構(gòu)型和信號(hào)模型,給出了雙站前視低頻UWB SAR 原始BP算法成像的原理和流程。其次,在上述基礎(chǔ)上,推導(dǎo)了雙站前視低頻UWB SAR FFBP算法成像處理的精確相位誤差形式,并分析了相位誤差對(duì)成像處理的影響,據(jù)此建立了雙站前視低頻UWB SAR FFBP成像處理中的子孔徑和子區(qū)域劃分原則。接下來,給出了雙站前視低頻UWB SAR FFBP算法成像處理流程,并對(duì)比分析了BP算法和FFBP算法的成像效率。最后,利用仿真實(shí)驗(yàn)證明了文中所作理論分析的正確性和所提方法的有效性。
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出版歷程
  • 收稿日期:  2015-06-18
  • 修回日期:  2015-12-25
  • 刊出日期:  2016-04-19

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