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Volume 34 Issue 2
Mar.  2012
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Wu Yu-Feng, Sun Guang-Cai, Yang Jun, Xing Meng-Dao, Zhou Feng. High-resolution Wide-swath Imaging for Spaceborne SAR Based on Periodic Non-uniform Sampling[J]. Journal of Electronics & Information Technology, 2012, 34(2): 279-288. doi: 10.3724/SP.J.1146.2011.00498
Citation: Wu Yu-Feng, Sun Guang-Cai, Yang Jun, Xing Meng-Dao, Zhou Feng. High-resolution Wide-swath Imaging for Spaceborne SAR Based on Periodic Non-uniform Sampling[J]. Journal of Electronics & Information Technology, 2012, 34(2): 279-288. doi: 10.3724/SP.J.1146.2011.00498

High-resolution Wide-swath Imaging for Spaceborne SAR Based on Periodic Non-uniform Sampling

doi: 10.3724/SP.J.1146.2011.00498
  • Received Date: 2011-05-25
  • Rev Recd Date: 2011-10-19
  • Publish Date: 2012-02-19
  • In order to solve the contradiction between high-resolution and wide-swath for the spaceborne single- channel SAR system, this paper proposes a new method based on periodic non-uniform sampling. The method uses the non-uniform sampling to avoid the overlap of blind ranges, making the blind from the same range unit appears in one sampling channel mostly; The method uses the periodic sampling to construct the equivalent multi-channel data, and uses the multi-channel unambiguous reconstruction method to reconstruct the signals spectrum. The paper also analyzes the optimal design of non-uniform sampling method in detail. Finally, simulation results verify the effectiveness of the method.
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