频率分集雷达最优频率间隔选择方法
发布时间：2018-07-13 20:02
【摘要】：传统的频率分集阵列雷达采用固定的频率间隔,从而限制了其在不同环境下的抗干扰性能.针对上述问题,提出了在干扰背景下基于斜投影滤波的频率间隔最优选择方法.通过对斜投影滤波输出信干噪比的分析,构建输出信干噪比与频率间隔的优化问题,并在每一个相干处理时间内得到最优的频率间隔.利用认知雷达的思想,将得到的最优频率间隔应用于下一个相干处理时间.理论和仿真均证明了频率分集阵列雷达能对抗主瓣干扰,而且当采用最优频率间隔时,频率分集阵列雷达可以获得更好的抗干扰性能.
[Abstract]:The traditional frequency diversity array radar uses fixed frequency intervals, which limits its anti-jamming performance in different environments. In order to solve the above problems, an optimal frequency interval selection method based on oblique projection filtering is proposed in this paper. By analyzing the signal-to-noise ratio of oblique projection filter, the optimal frequency interval between output signal-to-noise ratio and frequency interval is constructed, and the optimal frequency interval is obtained within each coherent processing time. Using the idea of cognitive radar, the optimal frequency interval is applied to the next coherent processing time. The theory and simulation show that the frequency diversity array radar can resist the main lobe interference, and the frequency diversity array radar can obtain better anti-jamming performance when the optimal frequency interval is adopted.
【作者单位】： 西安电子科技大学雷达信号处理国家重点实验室;
【基金】：国家自然科学基金资助项目(61571344) 上海航天科技创新基金资助项目(SAST2015071,SAST2015064)
【分类号】：TN958
本文编号：2120583
[Abstract]:The traditional frequency diversity array radar uses fixed frequency intervals, which limits its anti-jamming performance in different environments. In order to solve the above problems, an optimal frequency interval selection method based on oblique projection filtering is proposed in this paper. By analyzing the signal-to-noise ratio of oblique projection filter, the optimal frequency interval between output signal-to-noise ratio and frequency interval is constructed, and the optimal frequency interval is obtained within each coherent processing time. Using the idea of cognitive radar, the optimal frequency interval is applied to the next coherent processing time. The theory and simulation show that the frequency diversity array radar can resist the main lobe interference, and the frequency diversity array radar can obtain better anti-jamming performance when the optimal frequency interval is adopted.
【作者单位】： 西安电子科技大学雷达信号处理国家重点实验室;
【基金】：国家自然科学基金资助项目(61571344) 上海航天科技创新基金资助项目(SAST2015071,SAST2015064)
【分类号】：TN958
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