頻率分集雷達最優(yōu)頻率間隔選擇方法
發(fā)布時間:2018-07-13 20:02
【摘要】:傳統(tǒng)的頻率分集陣列雷達采用固定的頻率間隔,從而限制了其在不同環(huán)境下的抗干擾性能.針對上述問題,提出了在干擾背景下基于斜投影濾波的頻率間隔最優(yōu)選擇方法.通過對斜投影濾波輸出信干噪比的分析,構建輸出信干噪比與頻率間隔的優(yōu)化問題,并在每一個相干處理時間內得到最優(yōu)的頻率間隔.利用認知雷達的思想,將得到的最優(yōu)頻率間隔應用于下一個相干處理時間.理論和仿真均證明了頻率分集陣列雷達能對抗主瓣干擾,而且當采用最優(yōu)頻率間隔時,頻率分集陣列雷達可以獲得更好的抗干擾性能.
[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.
【作者單位】: 西安電子科技大學雷達信號處理國家重點實驗室;
【基金】:國家自然科學基金資助項目(61571344) 上海航天科技創(chuàng)新基金資助項目(SAST2015071,SAST2015064)
【分類號】:TN958
本文編號: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.
【作者單位】: 西安電子科技大學雷達信號處理國家重點實驗室;
【基金】:國家自然科學基金資助項目(61571344) 上海航天科技創(chuàng)新基金資助項目(SAST2015071,SAST2015064)
【分類號】:TN958
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