期刊文献+

适用于NLOS环境的UWB定位方案研究 被引量:15

Research on localization scheme of UWB in NLOS environment
在线阅读 下载PDF
导出
摘要 给出一种适用于NLOS环境的UWB定位方案,提出基于最强路径SP(trongest path)检测的TOA(time of arrival)估计,移动终端MT(mobile terminal)只需检测到2条不同方向的SP就可以完成与固定站FS(fixed station)之间的定位,且无需考虑障碍物位置,并同样适合LOS情形。通过对IEEE.802.15.4a中3种NLOS信道模型的仿真,分析了信道冲激响应和SP搜索区域的关系以及方案中各参数对定位性能的影响,结果表明NLOS环境中无法检测直射路径时,此定位方案是行之有效的。 A localization scheme via UWB suitable for NLOS was given and a TOA estimation based on the strongest path (SP) detection was proposed. The positioning operation between FS and MT was implemented when FS detected two strongest paths from different direction. The aforementioned scheme was also applicable for LOS situation and it was unnecessary to consider the location of obstruction. According to three NLOS channel model simulations in IEEE.802.15.4a, the relationship between channel impulse response and SP search region was analyzed, localization performance impacted by various parameters was also discussed. The results demonstrate the feasibility and validity of the proposed scheme especially when is unable to detect the direct path in NLOS.
出处 《通信学报》 EI CSCD 北大核心 2008年第4期1-7,共7页 Journal on Communications
基金 国家自然科学基金资助项目(60572148,60702060) 预研基金资助项目(9140A21060407DZ01)~~
关键词 超宽带 非视距 定位 最强路径检测 TOA UWB non line-of-sight localization SP detect TOA
作者简介 肖竹(1981-),男,湖南涟源人,西安电子科技大学博士生,主要研究方向为超宽带通信技术、测距与定位技术、通信信号处理。 于全(1965-),男,江西九江人,博士,博士生导师,中国电子系统设备工程公司研究所研究员、通信研究中心主任,主要研究方向为自组织网络技术、无线通信网络规划与设计、软件无线电。 易克初(1943-),男,湖南涟源人,博士,西安电子科技大学教授、博士生导师,综合业务网国家重点实验室副主任,主要研究方向为卫星通信、通信抗干扰、通信信号处理。 王勇超(1975-),男,河北衡水人,博士,西安电子科技大学副教授,主要研究方向为无线通信信号处理。
  • 相关文献

参考文献18

  • 1WIN M Z, SCHOLTZ R A. Impulse radio: how it works[J]. IEEE Communications Letters, 1998, 2(2): 36-38.
  • 2ROY S, FOERSTER J R, SOMAYAZULU V S. Ultrawideband radio design:the promise of high-speed short-range wireless connectivity[J]. IEEE Proceedings,2004, 92(2): 295-311.
  • 3PATWARI N, JOSHUA N A, KYPEROUNTAS S. Locating the modes-cooperative localization in wireless sensor networks[J]. IEEE Signal Processing Mag, 2005, 22(2): 54-69.
  • 4GEZICI S, TIAN Z, GIANNAKIS G B. Localization via ultra-wideband radios-a look at positioning aspects of future sensor networks[J]. IEEE Signal Processing Mag, 2005, 22(2): 70-84.
  • 5LEE J Y, SCHOLTZ R A. Ranging in a dense multipath environment using an UWB radio link[J]. IEEE Journal on Selected Areas in Communications, 2002, 20(9): 1677-1683.
  • 6STOICA L, RABBACHIN A, OPPERMANN I. A low-complexity noncoherent IR-UWB transceiver architecture with TOA estimation[J]. IEEE Trans on Microwave Theory and Techniques, 2006, 54(4): 1637-1646.
  • 7GEZICI S, SAHINOGLU Z, MOLISCH A F. A two-step time of arrival estimation algorithm for impulse radio ultra wideband systems[A]. European Signal Processing Conference[C]. Antalya, Turkey, 2005.
  • 8GUVENC I, SAHINOGLU Z. Threshold selection for UWB TOA estimation based on kurtosis analysis[J]. IEEE Communications Letters, 2005, 9(12): 1025-1027.
  • 9WANN C D, CHIN H C. Hybrid TOA/RSSI wireless location with unconstrained nonlinear optimization for indoor UWB channels[A]. Wireless Communication and Networking Conference[C]. Hongkong, 2007.3943-3948.
  • 10AHMAD S J, SEDKI M, RIAD A M. Ultra-wideband propagation measurements and channel modeling. DARPA NETEX Program. Report on Through-the-wall propagation and material characterization[EB/OL], http://www.darpa.mil/ato/solicit/netex/docs/models.pdf.

同被引文献175

引证文献15

二级引证文献93

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部