[1]石娟,张群飞,毛琳琳,等.基于ANM的宽带非相干子空间DOA估计方法[J].探测与控制学报,2019,41(06):38.[doi:.]
 SHI Juan,ZHANG Qunfei,MAO Linlin,et al.Wideband DOA Estimation with ISM Algorithm via Atomic Norm Minimization[J].,2019,41(06):38.[doi:.]
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基于ANM的宽带非相干子空间DOA估计方法()
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《探测与控制学报》[ISSN:1008-1194/CN:61-1316/TJ]

卷:
41
期数:
2019年06
页码:
38
栏目:
出版日期:
2020-01-15

文章信息/Info

Title:
Wideband DOA Estimation with ISM Algorithm via Atomic Norm Minimization
文章编号:
1008-1194(2019)06-0038-05
作者:
石娟1张群飞1毛琳琳2史文涛1王伟东1
1.西北工业大学航海学院,陕西 西安 710072;2.中国科学院声学研究所,北京 100190
Author(s):
SHI Juan1 ZHANG Qunfei1 MAO Linlin2 SHI Wentao1 WANG Weidong1
1. School of Marine and Technology, Northwestern Polytechnical University, Xi’an 710072, China; 2. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
关键词:
宽带信号DOA估计最小原子范数非相干子空间方法半正定规划Toeplitz矩阵
Keywords:
wideband signal direction of arrival estimation atomic norm minimization incoherent signal method semidefinite programming Toeplitz matrix
分类号:
TN911.7文献标志码:A文章编号:
DOI:
.
文献标志码:
A
摘要:
针对被动探测系统中,经典的宽带信号波达方位(DOA)估计方法在单快拍下无法获得统计结构,导致无法直接有效估计方位的问题,提出了基于最小原子范数(ANM)来修正传统的宽带非相干子空间(ISM)DOA估计方法。该方法首先将宽带信号划分为若干子带,在每个子带上通过将ANM重构成半正定规划(SDP),构造并恢复出最优的Toeplitz矩阵。该矩阵经过特征分解,能够获取准确的信号子空间和噪声子空间,从而得到误差较小的估计角度;最后将各子带的估计角度均值作为宽带信号方位估计结果。仿真结果和分析表明,所提方法提高了宽带信号的方位估计性能。
Abstract:
In the passive detective system, there is a problem that the wideband direction of arrival (DOA) estimation of traditional approach doesn’t work at the single snapshot. To solve this problem, the paper proposed an improved incoherent signal method (ISM) wideband DOA estimation approach by applying the atomic norm minimization (ANM) technique. Firstly, the received wideband signal of the array was modeled. To deal with the wideband signal, the whole band was divided into several different frequency bands. Then an optimal Toeplitz matrix was obtained from ANM in the form of semidefinite programming (SDP). The accurate signal subspace and noise subspace could be acquired by performing eigenvalue decomposition of the retrieval Toeplitz matrix, which helped to obtaining the less error estimated angle. Finally, the result of wideband DOA estimation was the given by the average result of each subband. The simulation results showed that the proposed algorithm improved the performance of wideband DOA estimation.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-06-26
基金项目:国家自然科学基金项目资助(61531015);国家重点研发计划项目资助(2016YFC1400203)
作者简介:石娟(1984—),女,陕西宝鸡人,博士研究生,研究方向:信号处理。E-mail:shijuan@mail.nwpu.edu.cn。

更新日期/Last Update: 2020-01-13