基于Screened Ratio原理的冲击噪声环境下DOA估计算法
Screened-Ratio-Principle-Based DOA Estimation Algorithm in Impulsive Noise Environment
-
摘要: 该文提出了一种冲击噪声环境中DOA估计的算法。算法首先根据Screened ratio原理构造阵列信号的相关矩阵，然后利用MUSIC算法实现DOA估计。与基于分数低阶矩(FLOM)的算法相比，该文算法不需要选择FLOM参数p。计算机仿真表明该文算法在冲击噪声环境下具有更佳的稳定性和估计精度。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]吕泽均, 肖先赐. 基于分数阶矩的测向方法研究[J]. 电波科学学报. 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. -
计量
- 文章访问数: 2242
- HTML全文浏览量: 123
- PDF下载量: 737
- 被引次数: 0
下载:
