三维观测模型下蒸发波导时空态势压缩感知

发布时间：2018-01-08 17:31

本文关键词：三维观测模型下蒸发波导时空态势压缩感知　出处：《电波科学学报》2014年02期 　论文类型：期刊论文

【摘要】：为减小蒸发波导时空态势感知过程中采集存储的数据量和计算量,将现有一维压缩感知观测模型推广,得到三维观测模型,并改进得到三维观测下的盲稀疏回溯重构算法.通过一个等效三维感知矩阵对时间维和空间二维进行同时观测,并考察其整体重构.新方法维护了蒸发波导参数内在的相关性,缓解了单独按时间维或空间维感知引入的重构人为效应.理论分析和实验表明,在相同压缩比下,时空三维感知结果最接近真值.
[Abstract]:In order to reduce the amount of data collected and calculated in the process of space-time situation perception of evaporation waveguide, the existing one-dimensional compressed sensing observation model is extended to obtain the three-dimensional observation model. The algorithm of blind sparse backtracking reconstruction under 3D observation is improved to simultaneously observe time and space through an equivalent three-dimensional perception matrix. The new method maintains the intrinsic correlation of the evaporative waveguide parameters and alleviates the artificial effect of reconstruction which is introduced by the perception of time dimension or space dimension alone. The theoretical analysis and experimental results show that the proposed method can be applied to the design of the evaporative waveguide. At the same compression ratio, the results of spatio-temporal 3D perception are closest to the true value.
【作者单位】：海军航空工程学院信号与信息处理山东省重点实验室;
【基金】：“泰山学者”建设工程专项经费资助
【分类号】：TN911.7
【正文快照】： 引言蒸发波导是海洋大气环境中最广泛出现的异常大气折射结构,并属于贴海波导的范畴,海水蒸发是其主要成因.已有研究[1-2]表明海上蒸发波导出现概率高达85%以上,它对基于正常海上大气模式工作的电子系统(如雷达、通信等)有很大的影响.因此,获知海上蒸发波导的时空态势显得尤为

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