MIMO-SAR大测绘带成像

武其松; 井伟; 邢孟道; 保铮

doi:10.3724/SP.J.1146.2007.01959

MIMO-SAR大测绘带成像

doi: 10.3724/SP.J.1146.2007.01959

基金项目:

国家自然科学基金项目(60502044)和教育部重点项目(20051009)资助课题

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出版历程
- 收稿日期: 2007-12-25
- 修回日期: 2008-11-02
- 刊出日期: 2009-04-19

Wide Swath Imaging with MIMO-SAR

摘要

摘要: 该文提出利用MIMO-SAR系统实现大测绘带成像的方法。在该系统中，利用离散频率编码信号实现高距离分辨；同时采用低脉冲重复频率(Pulse Repetition Frequency, PRF)来获得不模糊的大测绘带，然而PRF降低会导致多普勒模糊。文中利用MIMO-SAR系统提供更多自由度进行空域滤波，成功地解决了多普勒模糊次数大于通道个数条件下的解模糊问题。仿真试验验证了该方法的有效性。
- 合成孔径雷达;多发多收;大测绘带成像;空域滤波;离散频率编码波形
Abstract: This paper proposes an approach for wide swath imaging with Multiple-Input Multiple-Output Synthetic Aperture Radar (MIMO-SAR) system. In the system the Discrete Frequency Coding Waveform (DFCW) is applied to obtain high range resolution; and low PRF is adopted to achieve unambiguous wide swath, however, a reduction of the PRF raises Doppler ambiguities. The spatial filter is used to resolve the Doppler ambiguities. As the MIMO-SAR system provides more degrees of freedom than the channel number, the filter is successfully capable of resolving the Doppler ambiguities whose times are more than the channel number. Simulation result confirms the validity of the proposed method.

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参考文献(1)

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