周期性非均匀采样实现星载SAR高分辨宽测绘带成像

吴玉峰; 孙光才; 杨军; 邢孟道; 周峰

doi:10.3724/SP.J.1146.2011.00498

周期性非均匀采样实现星载SAR高分辨宽测绘带成像

doi: 10.3724/SP.J.1146.2011.00498

吴玉峰^{* 孙光才杨军邢孟道周峰,},
孙光才,
杨军,
邢孟道,
周峰

基金项目:

国家科学基金重大项目(60890072)和国家973计划项目(2010CB731903)资助课题

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- 被引次数: 0
出版历程
- 收稿日期: 2011-05-25
- 修回日期: 2011-10-19
- 刊出日期: 2012-02-19

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

Wu Yu-Feng^{* 孙光才杨军邢孟道周峰
,},
Sun Guang-Cai,
Yang Jun,
Xing Meng-Dao,
Zhou Feng

摘要

摘要: 针对单通道星载SAR系统高分辨与宽测绘带之间的矛盾，该文提出了一种周期性非均匀采样的解决方法。该方法利用非均匀的方位采样，避开距离盲区的重叠，使得相同距离单元的盲区最多出现在一个采样通道内；然后利用方位采样的周期性，构造出等效的多通道数据，通过多通道解模糊的方法实现方位信号频谱恢复。文中还详细分析了非均匀采样的优化设计方法。最后仿真实验验证了该文方法的有效性。
- 星载合成孔径雷达 /
- 高分辨宽测绘带 /
- 周期性非均匀采样 /
- 解模糊 /
- 单通道
Abstract: 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.
- Spaceborne SAR /
- High-resolution wide-swath /
- Periodic non-uniform sampling /
- Ambiguity reduction /
- Single-channel

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参考文献(1)

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