SAR-ECCM using phase-perturbed LFM chirp signals and DRFM repeat jammer penalization
SAR-ECCM using phase-perturbed LFM chirp signals and DRFM repeat jammer penalization
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DOI：
10.1109/radar.2005.1435879
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发表时间：
2005-05
影响因子：
4.4
通讯作者：
M. Soumekh
中科院分区：
文献类型：
--
作者：
M. Soumekh
这项工作是关注发展的雷达信号的战略和算法，提高性能的合成孔径雷达（SAR）图像目标的存在下，数字射频存储器（DRFM）重复干扰机。该方法基于在合成孔径的每个位置（脉冲重复间隔，PRI）处的快时域中的发射信号和/或其参数的操纵/改变;该方案被称为脉冲分集。特别地，我们利用所发送的啁啾信号的调制形式和/或改变每个PRI处的啁啾的速率;调制和/或速率从一个PRI到另一个PRI是变化的，并且这些变化仅为用户所知。利用这些信号的自相关性和互相关性研究了这些脉冲分集方法的优点。我们还提出了一种信号处理方法，用于惩罚DRFM干扰机，试图重复雷达信号。
This work is concerned with developing radar signaling strategies and algorithms that enhance the performance of a synthetic aperture radar (SAR) to image targets in the presence of digital radio frequency memory (DRFM) repeat jammers. The approach is based on a manipulation/alteration of the transmitted signal and/or its parameters in the fast-time domain at every position of the synthetic aperture (pulse repetition interval, PRI); this scheme is known as pulse diversity. In particular, we utilize a modulated form of the transmitted chirp signal and/or vary the rate of the chirp at each PRI; the modulation and/or the rate is varied from one PRI to another, and these variations are only known to the user. The merits of these pulse diversity methods are studied using the autocorrelation and cross-correlation of these signals. We also present a signal processing method for penalizing a DRFM jammer that tries to repeat the radar signal.