关键词: 非高斯, 谱估计, α稳定分布, 分数阶共变

Abstract:

When radar is working in a complex environment, the performance of conventional algorithms degenerates. New frequency spectrum estimation methods based on Fractional Lower Order Statistics (FLOS) covariation about radar were proposed: FLOS-direct method, FLOS-indirect method, FLOS-welch method, FLOS-music method. By estimating the sinusoidal signals embedded in the stable noise, the method in this paper is robust in both Gauss and non-Gauss environments.

Key words: non-Gauss, spectrum estimation, α stable distribution, fractional order covariation