非正側(cè)陣?yán)走_(dá)距離模糊雜波抑制新方法
發(fā)布時間:2018-12-15 07:16
【摘要】:為了改善嚴(yán)重距離模糊情況下雷達(dá)對地面強(qiáng)雜波的抑制性能,提出了一種基于頻率分集技術(shù)的雜波抑制方法.首先,推導(dǎo)了非正側(cè)陣頻率分集雷達(dá)空時信號模型,在此基礎(chǔ)上,給出了頻率增量的設(shè)計(jì)準(zhǔn)則用來區(qū)分距離模糊雜波以及防止回波信號去相關(guān).然后,利用子空間投影算法抑制距離模糊雜波.仿真試驗(yàn)證明了該方法的有效性,在俯仰維自由度有限的情況下,該方法的性能優(yōu)于傳統(tǒng)俯仰濾波方法.
[Abstract]:In order to improve the performance of radar to suppress ground strong clutter in the case of severe range ambiguity, a frequency diversity based clutter suppression method is proposed. Firstly, the space-time signal model of non-positive array frequency diversity radar is derived, and the design criterion of frequency increment is presented to distinguish range fuzzy clutter and prevent echo signal de-correlation. Then, the subspace projection algorithm is used to suppress the range fuzzy clutter. The simulation results show that the proposed method is effective and the performance of this method is better than that of the traditional pitch filtering method under the condition of limited degree of freedom in pitch dimension.
【作者單位】: 西安電子科技大學(xué)雷達(dá)信號處理國家重點(diǎn)實(shí)驗(yàn)室;
【基金】:國家自然科學(xué)基金資助項(xiàng)目(61301282)
【分類號】:TN957.51
[Abstract]:In order to improve the performance of radar to suppress ground strong clutter in the case of severe range ambiguity, a frequency diversity based clutter suppression method is proposed. Firstly, the space-time signal model of non-positive array frequency diversity radar is derived, and the design criterion of frequency increment is presented to distinguish range fuzzy clutter and prevent echo signal de-correlation. Then, the subspace projection algorithm is used to suppress the range fuzzy clutter. The simulation results show that the proposed method is effective and the performance of this method is better than that of the traditional pitch filtering method under the condition of limited degree of freedom in pitch dimension.
【作者單位】: 西安電子科技大學(xué)雷達(dá)信號處理國家重點(diǎn)實(shí)驗(yàn)室;
【基金】:國家自然科學(xué)基金資助項(xiàng)目(61301282)
【分類號】:TN957.51
【參考文獻(xiàn)】
相關(guān)期刊論文 前3條
1 胡柏林;廖桂生;許京偉;朱圣棋;鞏繼玲;;前視陣頻率分集雷達(dá)空時雜波特性研究[J];電子與信息學(xué)報(bào);2013年11期
2 許京偉;廖桂生;朱圣棋;柳艾飛;;前視陣高速雷達(dá)空時處理方法研究[J];電子與信息學(xué)報(bào);2013年03期
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