摘要
基于到达时间差(Time Difference of Arrival,简称TDOA)的定位技术是当今无线定位的研究热点。首先提出了两路测距(Two-Way Ranging,简称TWR)和对称双边两路测距(Symmetric Double Sided Two-Way Ranging,简称SDS-TWR)无线测距原理和算法,并对两者的测距精度进行了一个简单的分析。进而给出了基于单路测距(One-Way Ranging,简称OWR)的TDOA无线定位方案,利用两次传输数据和接收数据的时间间隔相等以及SDS-TWR测距距离偏差公式计算出两节点的各自频率偏差,用于提高定位结果的精度。通过仿真验证了该方法能显著提高基于TDOA无线定位系统的定位精度。
The location technology based on TDOA is widely paid attention today . TWR and SDS TWR wireless ranging principle and algorithm is introduced first, and their ranging precision is analyzed simply. Wireless location scheme based on TDOA of OWR is introduced, using the same time interval be tween two data sending and receiving, and using SDS TWR ranging distance deviation formula to calcu late each frequency deviation of the two nodes, which is used to improve the location precision. The simu lation results show that the method can significantly improve the precision of the wireless location system based on TDOA.
出处
《常州大学学报（自然科学版）》
CAS
2013年第1期51-55,共5页
Journal of Changzhou University：Natural Science Edition
基金
江苏省科技支持计划工业部分项目(CE20120021)
