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基于经典DSmT的Sonar栅格地图创建
  • 期刊名称:计算机应用研究, 2007, 24(3): 209-212
  • 时间:0
  • 分类:TP24[自动化与计算机技术—控制科学与工程;自动化与计算机技术—检测技术与自动化装置]
  • 作者机构:[1]华中科技大学控制系智能控制与机器人实验室,湖北武汉430074
  • 相关基金:国家自然科学基金资助项目(69585003)
  • 相关项目:基于DSmT的多源不完善信息广义融合研究
中文摘要:

基于最近提出的一种在贝叶斯和DST扩展而来的信息融合算法DSmT(Dezert—Smarandache Theory),在实验的基础上,结合Sonar测量的基本特性,对静态结构化环境建模,并构造了广义基本信度赋值函数,利用经典DSm融合规则,融合每个栅格的声纳冗余信息,计算栅格占用的Bel。最后,以Pioneer Ⅱ移动机器人作为试验平台,并在线对小型环境进行了3D栅格占用信度分布地图创建,其俯视图与实际2D地图中的物体外观轮廓及所在位置进行比较,其比较结果充分验证了算法的有效性,为进一步研究应用基于折扣理论的DSmT解决异类或同类非可靠多源信息融合,基于Hybrid DSmT的动态环境地图创建,以及多机器人联合创建地图和自定位奠定了坚实的基础。

英文摘要:

A new method of information fusion recently developed from Bayesian theory and Dempster-Shafer theory was applied and on the base of experiment, according to sonar' s metrical characteristic, the general basic belief assignment functions were constructed for modeling of static environment. After sonar' s redundant information for each grid was fused according to classic DSm rule, the Bel for grid' s occupancy was calculated. Finally, Pioneer Ⅱ mobile robot served as the experiment platform, and 3D Map was built based on DSmT on-line respectively. By comparing its planform from objects' profile and location in the real 2D environment, the validity of this method was fully verified. In short, would establish a firm foundation for further research on solving heterogeneous or homogeneous multi-source information fusion according to DSmT based on discount theory, on map building in dynamic environment and multi-robot' s map building together and self-localization based on Hybrid DSmT.

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