摘要
针对在室内复杂环境中采用单一参数比如信号到达时间(Time of Arrival,TOA)或接收信号强度(Received Signal Strength,RSS)等定位精度低的问题,提出一种TOA/RSS混合定位算法。TOA定位精度高,但对信号带宽和信道条件比较敏感;而RSS对可用带宽的敏感性较低,并且已包含室内环境信息,结合两种参数定位时的特点提出了TOA/RSS混合定位算法,通过约束条件和二步最小二乘法将定位区域进一步缩小,估计出移动终端的位置。仿真结果表明,在不提高算法复杂度的前提下,本文所提出的算法比单独使用TOA或者RSS定位具有更好的精度和鲁棒性。
Aiming at the problem of low positioning accuracy in indoor complex environment using single parame- ters such as Time of Arrival ( TOA) or Received Signal Strength ( RSS),a hybrid TOA/RSS positioning algorithm is proposed. TOA positioning accuracy is high but sensitive to signal bandwidth and channel conditions. RSS has low sen- sitivity to available bandwidth and contains indoor environment information. Combined with the characteristics of two parameters positioning,a TOA/RSS hybrid positioning algorithm is proposed. The location area is further reduced by constraints and two-step least squares method to estimate the location of mobile terminal. The simulation results show that,without increasing the complexity of the algorithm,the proposed algorithm has better accuracy and robustness than using TOA or RSS alone.
作者
杨超超
陈建辉
刘德亮
方正
YANG Chaochao;CHEN Jianhui;LIU Deliang;FANG Zheng(Department of Missile Engineering,Shijiazhuang Campus,Army University of Engineering,Shijiazhuang 050000,China;Department of Electrical and Information Engineering,Hebei Vocational and Technical College of Communications,Shijiazhuang 050000,China)
出处
《激光杂志》
北大核心
2019年第10期51-55,共5页
Laser Journal
基金
国家自然科学基金(No.61601494)
