一种韧性的高分辨率多径时延估计方法
Systems Engineering and Electronics(2008)
Abstract
将观测数据的噪声建模为α稳定分布,运用分数低阶统计量理论中的共变概念和最小分散系数准则,结合用于解决高维非线性最小二乘优化问题的松弛搜索思想,借鉴高分辨率多径时延估计算法WRELAX、DS-WRELAX,提出了一种韧性的高分辨率多径时延估计算法RHMTDE。理论分析和仿真结果表明,该算法有抗粗差的能力,在高斯噪声和脉冲噪声环境中都可以较好地估计出多径观测信号中每径的时间延迟。
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Key words
high resolution,relaxation search,α stable distribution,multipath time delay estimation,covariation
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