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分布式信源數(shù)據(jù)域直接位置估計(jì)方法

王大鳴 任衍青 逯志宇 巴斌

王大鳴, 任衍青, 逯志宇, 巴斌. 分布式信源數(shù)據(jù)域直接位置估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2018, 40(2): 371-377. doi: 10.11999/JEIT170365
引用本文: 王大鳴, 任衍青, 逯志宇, 巴斌. 分布式信源數(shù)據(jù)域直接位置估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2018, 40(2): 371-377. doi: 10.11999/JEIT170365
WANG Daming, REN Yanqing, LU Zhiyu, BA Bin. Direct Position Determination of the Distributed Source[J]. Journal of Electronics & Information Technology, 2018, 40(2): 371-377. doi: 10.11999/JEIT170365
Citation: WANG Daming, REN Yanqing, LU Zhiyu, BA Bin. Direct Position Determination of the Distributed Source[J]. Journal of Electronics & Information Technology, 2018, 40(2): 371-377. doi: 10.11999/JEIT170365

分布式信源數(shù)據(jù)域直接位置估計(jì)方法

doi: 10.11999/JEIT170365
基金項(xiàng)目: 

國(guó)家自然科學(xué)基金(61401513),國(guó)家高技術(shù)研究發(fā)展計(jì)劃(2012AA01A502, 2012AA01A505)

Direct Position Determination of the Distributed Source

Funds: 

The National Natural Science Foundation of China (61401513), The National High Technology Research and Development Program of China (2012AA01A502, 2012AA01A505)

  • 摘要: 針對(duì)目前信號(hào)數(shù)據(jù)域直接位置估計(jì)方法對(duì)分布式信號(hào)源進(jìn)行直接定位存在精度下降問(wèn)題,該文提出分布式信源數(shù)據(jù)域直接位置估計(jì)方法。首先構(gòu)建分布式信源直接位置估計(jì)模型,然后分別基于最大似然準(zhǔn)則和特征結(jié)構(gòu)分解思想給出分布式信源高精度直接位置估計(jì)的兩種方法分布源最大似然估計(jì)方法和廣義子空間方法。最后通過(guò)多維搜索完成對(duì)于分布式信源的直接位置估計(jì)。仿真分析表明,該文算法對(duì)分布式信源進(jìn)行直接位置估計(jì)的精度較傳統(tǒng)直接位置估計(jì)算法明顯提升,能夠在較低信噪比下逼近克拉美羅界;分布源最大似然估計(jì)方法在低信噪比下定位精度優(yōu)于廣義子空間方法,而廣義子空間方法復(fù)雜度更低。
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出版歷程
  • 收稿日期:  2017-04-24
  • 修回日期:  2017-11-02
  • 刊出日期:  2018-02-19

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