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Volume 32 Issue 6
Jun.  2010
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Ren Xiao-zhen, Yang Ru-liang. Study on Three-Dimensional Imaging Algorithm for Airborne Forward-Looking SAR[J]. Journal of Electronics & Information Technology, 2010, 32(6): 1361-1365. doi: 10.3724/SP.J.1146.2009.00734
Citation: Ren Xiao-zhen, Yang Ru-liang. Study on Three-Dimensional Imaging Algorithm for Airborne Forward-Looking SAR[J]. Journal of Electronics & Information Technology, 2010, 32(6): 1361-1365. doi: 10.3724/SP.J.1146.2009.00734

Study on Three-Dimensional Imaging Algorithm for Airborne Forward-Looking SAR

doi: 10.3724/SP.J.1146.2009.00734
  • Received Date: 2009-05-12
  • Rev Recd Date: 2009-09-11
  • Publish Date: 2010-06-19
  • In this paper, an innovative airborne forward-looking SAR system using antenna array is studied, and a new three-dimensional imaging algorithm is proposed for airborne forward-looking SAR based on the image geometry and the characteristic of echo signal. A single SAR image was obtained with chirp scaling algorithm until all the receiving antennas have received echoes once. When plane flies along the track continuously, a sequence of two-dimensional SAR images in front of the flight path can be obtained. Then the three-dimensional image of forward-looking SAR can be obtained by focusing one section at an azimuth position one time with Range-Doppler algorithm until all the sections have been processed. Raw data of forward-looking SAR in X-band is simulated and three-dimensional image is achieved. The imaging result is analyzed, and simulation results confirm the validity of the proposed algorithm.
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