| 一种基于空时联合约束的相对定位方法 |
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| 引用本文： | 徐卫明, 暴景阳, 陆建华. 一种基于空时联合约束的相对定位方法[J]. 武汉大学学报 ( 信息科学版), 2009, 34(4): 495-498. |
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| 作者姓名： | 徐卫明 暴景阳 陆建华 |
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| 作者单位： | 1清华大学电子工程系,北京市海淀区清华园100084;2大连舰艇学院海测工程系,大连市解放路667号,116018 |
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| 基金项目： | 国家自然科学基金，大连舰艇学院科研发展基金，大连舰艇学院科技创新资助项目 |
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| 摘 要： | 为了降低机动环境对传感器网络自身定位的影响,提出了一种基于空时联合约束的相对定位(STRP)方法。Monte Carlo仿真表明,相对于STF技术,STRP方法降低了环境对定位的影响,自主导航定位的精度提高了36%。
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| 关 键 词： | 传感器网络 相对定位 空时联合约束 强跟踪 |
| 收稿时间： | 2009-01-18 |
| 修稿时间： | 2009-01-18 |
A Relative Positioning Method Based on Space-Time Constraints |
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| XU Weiming, BAO Jingyang, LU Jianhua. A Relative Positioning Method Based on Space-Time Constraints[J]. Geomatics and Information Science of Wuhan University, 2009, 34(4): 495-498. |
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| Authors: | XU Weiming BAO Jingyang LU Jianhua |
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| Affiliation: | 1Dept.of Electronic Engineering,Tsinghua University,Qinghuayuan,Beijing 100084,China;2Dept.of Hydrography & Cartography Engineering,Dalian Naval Academy,667 Jiefang Road,Dalian 116018,China |
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| Abstract: | To improve the relative positioning precision of wireless sensor networks(WSN) affected by environment perturbing,this paper proposes a joint space-time constraints based relative positioning method(STRP).Firstly,the state equation in cooperative mission of WSN is presented.Secondly,space-domain geometric constraint equations of WSN are introduced according to correlation assumption of maneuvering topography.Finally,the geometric constraint equations are combined with strong tracking filter(STF) in time-domain by Lagrange multipliers to improve the positioning performance of WSN in perturbing environment.The results of Monte Carlo simulation demonstrate that the STRP techniques reduces the influence of perturbing environment and increases the positioning precision of antomated navigation by 36% compared with conventional STF. |
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| Keywords: | wireless sensor networks(WSN) relative positioning space-time constraint strong tracking filtering |
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