【摘要】 在室内这种特定环境下,无线信号在传播过程中会发生NLOS和LOS传播,由此产生定位误差。主要在WIFI无线网络环境下对室内定位精确度的影响因子NLOS和LOS进行研究,并在室内环境下的对信号传播模型进行建模。通过仿真定位环境,分析推导出在影响因子强度不同的室内环境下的两种影响因子消减优化算法BRBF和V-OBTL以及这两种优化算法在定位中的精确度,以此提出在不同影响因子环境中以及采用不同采样方式下的提高定位精度的方法。更多还原

【Abstract】 In specific indoor environment,NLOS and LOS would emerge in the transmission process of wireless signal,and this would weaken the signal intensity result in location errors.The influence factors of indoor-location precision in WIFI network environment is discussed in detail,and the signal propagation model constructed.By simulating the location environment,the two influence-factor decreasing algorithms and their location accuracy in different indoor environments are analyzed,and thus the method for improving location accuracy in different influence-factor environments or with different sampling modes is proposed.更多还原