To improve the positioning accuracy in GPS point positioning, the geometric dilution of precision （GDOP） including HDOP, VDOP, TDOP, PDOP is commonly considered. The properties of the DOP for the GPS satellite navig...To improve the positioning accuracy in GPS point positioning, the geometric dilution of precision （GDOP） including HDOP, VDOP, TDOP, PDOP is commonly considered. The properties of the DOP for the GPS satellite navigation system are studied and the coordinate system is improved in order to decrease the amount of variables. In the end, by simulation and discussing the results, the corresponding conclusions are presented.展开更多
针对目前WiFi(wireless fidelity)的加权质心定位算法精度不足的问题,研究了基于卫星定位中的精度因子(dilution of precision, DOP)与WiFi定位中的信号强度(received signal strength indication, RSSI)融合的技术方案,提出了改善接入...针对目前WiFi(wireless fidelity)的加权质心定位算法精度不足的问题,研究了基于卫星定位中的精度因子(dilution of precision, DOP)与WiFi定位中的信号强度(received signal strength indication, RSSI)融合的技术方案,提出了改善接入点(access point, AP)数量的方法,优化了算法模型,达到了更优的室内定位效果。仿真试验结果表明,该方法能提高加权质心定位算法的精确度,可广泛应用于各种室内定位场景。展开更多
基金a grant from Science and Technology Commission of Shanghai Municipality (05dz15006)
文摘To improve the positioning accuracy in GPS point positioning, the geometric dilution of precision （GDOP） including HDOP, VDOP, TDOP, PDOP is commonly considered. The properties of the DOP for the GPS satellite navigation system are studied and the coordinate system is improved in order to decrease the amount of variables. In the end, by simulation and discussing the results, the corresponding conclusions are presented.
文摘针对目前WiFi(wireless fidelity)的加权质心定位算法精度不足的问题,研究了基于卫星定位中的精度因子(dilution of precision, DOP)与WiFi定位中的信号强度(received signal strength indication, RSSI)融合的技术方案,提出了改善接入点(access point, AP)数量的方法,优化了算法模型,达到了更优的室内定位效果。仿真试验结果表明,该方法能提高加权质心定位算法的精确度,可广泛应用于各种室内定位场景。
