基于Screened Ratio原理的沖擊噪聲環(huán)境下DOA估計(jì)算法
Screened-Ratio-Principle-Based DOA Estimation Algorithm in Impulsive Noise Environment
-
摘要: 該文提出了一種沖擊噪聲環(huán)境中DOA估計(jì)的算法。算法首先根據(jù)Screened ratio原理構(gòu)造陣列信號(hào)的相關(guān)矩陣，然后利用MUSIC算法實(shí)現(xiàn)DOA估計(jì)。與基于分?jǐn)?shù)低階矩(FLOM)的算法相比，該文算法不需要選擇FLOM參數(shù)p。計(jì)算機(jī)仿真表明該文算法在沖擊噪聲環(huán)境下具有更佳的穩(wěn)定性和估計(jì)精度。Abstract: This paper present a new DOA estimation algorithm in impulsive noise environment. The algorithm uses firstly screened ratio principle to construct the correlation matrix of the array data and then implements the DOA estimation by MUSIC algorithm. In comparison with the Fractional Lower Order Moment (FLOM)-based algorithms, the proposed algorithm does not need the selection of the FLOM parameter. Computer simulations show that the algorithm is more robust and more accurate than FLOM-MUSIC algorithm.
-
Krim H, Viberg M. Two decades of array signal processing research:The parametric approach. IEEE Signal Processing Mag, 1996, 13(2): 6794. .[2]Shao M, Nikias C L. Signal Processing with Alpha-StableDistributions and Applications. New York: Wiley, 1995, Chap 1,2.[3]Tsakalides P, Nikias C L. Maximum likelihood localization of sources in noise modeled as a stable process[J].IEEE Trans on SP.1995, 43(10):2700-[4]Tsakalides P, Nikias C L The robust covariation-based MUSIC (ROC-MUSIC) algorithm for bearing estimation in impulsive noise environments[J]. IEEE Trans on SP, 1996, 44 (7): 1623.1633.[5]Liu T H, Mendel J M. A subspace-based direction finding algorithm using fractional lower order statistics[J].IEEE Trans on SP.2001, 49 (7):1605-[6]呂澤均, 肖先賜. 基于分?jǐn)?shù)階矩的測(cè)向方法研究[J]. 電波科學(xué)學(xué)報(bào). 2002, 12, 17(12): 561564. .[7]Kanter M, Steiger W L. Regression and autoregression with infinite variance[J].Adv. Appl. Probab.1974, 6(4):768-[8]Shao M, Nikias C L. Signal processing with fractional low order moments: stable processes and their application[J].Proc IEEE.1993, 81:986-[9]Miller G. Properties of certain symmetric stable distribution. J. of Multivariate Anal., 1978, 8: 346360. -
計(jì)量
- 文章訪問數(shù): 2248
- HTML全文瀏覽量: 124
- PDF下載量: 737
- 被引次數(shù): 0
下載:
