上海大学学报(自然科学版) ›› 2022, Vol. 28 ›› Issue (2): 238-249.doi: 10.12066/j.issn.1007-2861.2237

• 研究论文 • 上一篇    下一篇

基于改进樽海鞘群算法的到达时间差定位

马一鸣1, 石志东1(), 赵康2,3, 贡常磊1, 单联海2   

  1. 1.上海大学 特种光纤与光接入网重点实验室, 上海 200444
    2.上海物联网有限公司, 上海 201899
    3.华东师范大学 软件工程学院, 上海 200062
  • 收稿日期:2019-12-16 出版日期:2022-04-30 发布日期:2020-09-01
  • 通讯作者: 石志东 E-mail:zdshi@shu.edu.cn
  • 作者简介:石志东(1964--), 男, 研究员, 博士生导师, 研究方向为电磁场与微波技术、通信与信息系统. E-mail: zdshi@shu.edu.cn
  • 基金资助:
    国家重点研发计划资助项目(2019YFB2101602)

Time difference of arrival localization based on an improved salp swarm algorithm

MA Yiming1, SHI Zhidong1(), ZHAO Kang2,3, GONG Changlei1, SHAN Lianhai2   

  1. 1. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China
    2. Shanghai Internet of Things Co., Ltd., Shanghai 201899, China
    3. Software Engineering Institute, East China Normal University, Shanghai 200062, China
  • Received:2019-12-16 Online:2022-04-30 Published:2020-09-01
  • Contact: SHI Zhidong E-mail:zdshi@shu.edu.cn

摘要:

针对室内到达时间差(time difference of arrival, TDOA)位置估计中的非线性最优化问题, 提出用改进的樽海鞘群算法搜索目标位置. 通过选择最优主基站构造改进的适应度函数, 使适应度函数可以更好地反映解的优劣程度, 提高了搜索精度. 在初始樽海鞘种群中引入近似解, 使全局搜索的步骤得到简化, 加快了算法前期收敛速度. 采用自适应跟随策略更新追随者位置, 解决局部开发低效问题, 加快了算法后期收敛速度. 仿真结果表明, 基于改进樽海鞘群算法的 TDOA 定位技术相比其他元启发式算法具有更高的定位精度和更快的收敛速度.

关键词: 室内定位, 到达时间差, 樽海鞘群算法, 元启发式算法

Abstract:

To address the nonlinear optimization problem of indoor time difference of arrival (TDOA) location estimation, an improved salp swarm algorithm (SSA) is proposed to search target locations. An improved fitness function is constructed by selecting the optimal master base station so that the fitness function can better reflect the quality of the solution, thereby enhancing search accuracy. The approximate solution is introduced into an initial salp population to simplify global exploration, and the convergence speed of the algorithm is accelerated in the early stage. An adaptive following strategy is used to update follower locations to solve the problem of low efficiency in local exploitation, which accelerates the algorithm convergence speed in the later stage. Simulation results show that the TDOA localization technology based on the improved SSA has higher localization accuracy and faster convergence speed than other meta-heuristic algorithms.

Key words: indoor localization, time difference of arrival (TDOA), salp swarm algorithm (SSA), meta-heuristic algorithm

中图分类号: