摘要
基于接收信号强度(RSS)测距的定位性能受到动态多径的严重影响。针对该问题,设计跳频接收信号强度(FHRSS)室内定位系统。利用广播电视的保护频带传送测距信号,在大量而且分布很广的保护频带之间进行跳频测量。为对抗多径的严重影响,基于频率选择特性设计一种高效的多径误差消除方法。FHRSS具有简单的闭合测距表达式,可避免制约传统RSS测距方法的训练过程。使用USRP N210软件无线电平台实现FHRSS定位系统,并在动态室内环境下对其进行性能测试。实验结果表明,相比传统RSS定位系统,FHRSS可有效减小测距误差和定位误差,实现2. 6 m的定位精度。
The dynamic multipath is a major challenge to positioning solutions based on Received Signal Strength(RSS)ranging.Aiming at this problem,this paper puts forward Frequency Hopping Received Signal Strength(FHRSS)indoor positioning system.It transfers the ranging signal through the guard band of radio and television,and does the frequency hopping measure between the widely distributed guard bands.Based on the frequency selectivity of multipath,a ranging method is designed to eliminate multipath errors.FHRSS has a simple closed-form expression and hence avoids the training process,which limits the use of traditional RSS method severely.It is implemented with USRP N210 software radio platform and evaluated in a dynamic indoor environment.The experimental results show that,compared with the traditional RSS-based positioning system,FHRSS can reduce the ranging error and the positioning error respectively,and its positioning accuracy reaches 2.6 m.
作者
庄昱垚
张骋
赵统一
ZHUANG Yuyao;ZHANG Cheng;ZHAO Tongyi(Jiangsu Xian’an Technology Co.,Inc.,Nanjing 210016,China;Institute of Command and Control Engineering,The Army Engineering University of PLA,Nanjing 210007,China;Airborne Training Base of PLA,Guilin,Guangxi 541003,China)
出处
《计算机工程》
CAS
CSCD
北大核心
2018年第10期118-123,共6页
Computer Engineering
基金
国家自然科学基金面上项目(61273047
61573376)
江苏省自然科学基金青年项目(BK20130068)
关键词
室内定位
跳频
接收信号强度
多径
保护频带
indoor localization
frequency hopping
Received Signal Strength(RSS)
multipath
guard band
