A Novel Space–Time Coding Alamouti Waveform Scheme for MIMO-SAR Implementation
A Novel Space–Time Coding Alamouti Waveform Scheme for MIMO-SAR Implementation
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DOI：
10.1109/lgrs.2014.2333232
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发表时间：
2015-02
影响因子：
4.8
通讯作者：
Feng He;Z. Dong;D. Liang
中科院分区：
文献类型：
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作者：
Feng He;Z. Dong;D. Liang
本文提出了一种用于多输入多输出合成孔径雷达实现的新型扩展空时编码波形方案。扩展包括在一个发射持续时间内实现两个Alamouti周期，最小化时变信道效应和基本正交波形的新形式。该波形方案的主要优点包括防鬼像、跨信道干扰相互抵消、正交Tx信道同步传输、可自由选择PRF等。通过对点状目标的仿真验证了所提方法的有效性。
This letter presents a novel extended space-time coding waveform scheme for multiple-input-multiple-output synthetic aperture radar implementation. The extensions include the fulfilling of the two Alamouti periods in one transmit duration minimizing the time-variant channel effect and the new form of the basic orthogonal waveforms. The main advantages of the proposed waveform scheme include ghost image prevention, cross-channel interference mutual cancelation, simultaneous transmission via orthogonal Tx channels, free selection of PRF, etc. The proposed techniques are verified by a simulation for the case of point-like targets.