α穩(wěn)態(tài)分布噪聲下單基MIMO雷達DOA估計
發(fā)布時間:2018-09-15 20:07
【摘要】:MIMO雷達實際中的噪聲通常是沒有二階以上的矩的α穩(wěn)態(tài)分布沖擊噪聲,基于二階或更高階累積量的常用角度估計算法很難實現(xiàn)目標DOA估計。為此,提出了一種基于FLOM-RC-MUSIC算法的MIMO雷達DOA方法,通過利用匹配濾波后數(shù)據(jù)先進行降維處理,減小了算法的運算復(fù)雜度,再構(gòu)造分數(shù)低階協(xié)方差矩陣實現(xiàn)對沖擊噪聲的有效抑制,彌補了傳統(tǒng)的處理算法不適用于沖擊噪聲的缺陷,增強了噪聲子空間估計算法的穩(wěn)健性。
[Abstract]:The actual noise of MIMO radar is usually the 偽 steady distribution impulse noise with no more than second order moments. It is difficult to realize the target DOA estimation by the commonly used angle estimation algorithm based on the second order or higher order cumulants. In this paper, a MIMO radar DOA method based on FLOM-RC-MUSIC algorithm is proposed. By using the matched filtering data to reduce the dimension first, the computational complexity of the algorithm is reduced, and then the fractional low order covariance matrix is constructed to effectively suppress the impact noise. It makes up for the disadvantage that the traditional processing algorithm is not suitable for impulse noise and enhances the robustness of the noise subspace estimation algorithm.
【作者單位】: 西安電子科技大學(xué);空軍工程大學(xué);
【基金】:國家自然科學(xué)基金(No.61601502,61501501) 航空基金(No.20150196007,20150196003)
【分類號】:TN958
本文編號:2244374
[Abstract]:The actual noise of MIMO radar is usually the 偽 steady distribution impulse noise with no more than second order moments. It is difficult to realize the target DOA estimation by the commonly used angle estimation algorithm based on the second order or higher order cumulants. In this paper, a MIMO radar DOA method based on FLOM-RC-MUSIC algorithm is proposed. By using the matched filtering data to reduce the dimension first, the computational complexity of the algorithm is reduced, and then the fractional low order covariance matrix is constructed to effectively suppress the impact noise. It makes up for the disadvantage that the traditional processing algorithm is not suitable for impulse noise and enhances the robustness of the noise subspace estimation algorithm.
【作者單位】: 西安電子科技大學(xué);空軍工程大學(xué);
【基金】:國家自然科學(xué)基金(No.61601502,61501501) 航空基金(No.20150196007,20150196003)
【分類號】:TN958
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