Synthetic Aperture Radar Interference Based on Scene Fusion and Active Cancellation
Synthetic Aperture Radar Interference Based on Scene Fusion and Active Cancellation
复制标题
基于场景融合和主动消除的合成孔径雷达干扰
DOI：
10.1109/jstars.2021.3117849
复制
发表时间：
2021
影响因子：
5.5
通讯作者：
邢孟道
中科院分区：
文献类型：
--
作者：
周其阵;周松;杨磊;宁潇;邢孟道
回波抵消用于通过频域和时域中的信号调制来消除回波信号。然而，它依赖于参数估计的高精度。此外，它在合成孔径雷达（SAR）图像中引入了一个不兼容的黑标记，这将很容易被检测到，不可避免地降低欺骗性能。针对这一问题，提出了一种回波抵消与欺骗干扰相结合的复合干扰方法。为了将欺骗场景与周围场景融合，利用感兴趣目标（TOI）周围的场景生成最优欺骗模板，利用欺骗模板对原始信号进行系数调制，生成欺骗信号。然后，欺骗信号被发送到SAR平台与抵消信号，这是由一个有源源产生的。在SAR图像处理后，用与周围场景相似度高的模板代替图像中不相容的黑标记，有效地提高了欺骗性能。该方法可以用欺骗模板的低散射特性来覆盖TOI的高散射特性。仿真结果验证了该方法的通用性和性能优越性。
Echo cancellation is used for eliminating echo signals by signal modulation in the frequency domain and time domain. However, it depends on the high accuracy of parameter estimation. In addition, it introduces an incompatible black mark in the synthetic aperture radar (SAR) image, which will be easily detected and inevitably degrades the deception performance. To address this problem, this article proposed a compound interference method that combines echo cancellation and deception jamming. In order to fuse the deception scene with the surrounding scene, the optimal deception template is generated by using the scene around the target of interest (TOI), and the deception template is used to modulate the coefficient of the original signal to generate the deception signal. Then, the deception signal is sent to the SAR platform together with the cancellation signal, which is generated by an active source. After the SAR process, the incompatible black mark in the image is replaced by a template with high similarity of surrounding scene, which effectively improves the deception performance. The proposed method can be used to cover the higher scattering characteristic of the TOI with the lower scattering characteristic of the deception template. Simulation results are provided and analyzed to validate the universality and the performance superiority of the proposed method.