基于多根长馈线天线基站的TDOA定位模型及解法  

TDOA Positioning Model and Solution Method Based on Multiple Long Feeder Antenna Base Stations

作　　者：周宇航 曾桂根[1] 宋荣方[1] ZHOU Yuhang;ZENG Guigen;SONG Rongfang(College of Telecommunications&Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《移动通信》2025年第2期132-138,共7页Mobile Communications

基　　金：国家自然科学基金“基于群体串行干扰删除的SDMA/NOMA深度融合传输机制与优化”(62171235)。

摘　　要：为解决多基站定位模型中基站之间同步代价高的问题,提出了一种基于多根长馈线天线基站的到达时间差(Time Difference of Arrival,TDOA)定位模型,给出了模型方程和求解方法,该方法将复杂的3对距离差方程组转化为1个一元八次方程,然后采用Aberth-Newton迭代法来迭代求解方程。通过计算机仿真验证了基于多根长馈线天线基站的TDOA定位模型和解法的有效性,并对该模型的多解问题进行了分析,用优化基站布局的方案,解决了定位模型的唯一解问题。本定位模型在覆盖范围数百米时,定位精度可达分米级。To address the high synchronization costs among base stations in multi-base station positioning models,an innovative time difference of arrival(TDOA)positioning model utilizing multiple long feeder antenna base stations is designed.This model establishes and solves equations,transforming a complex set of trilateration equations into a single octic equation,which is then solved using the Aberth-Newton iterative method.Computer simulations validate the effectiveness of the TDOA positioning model and solution method based on multiple long feeder antenna base stations.The issue of multiple solutions inherent in the model is analyzed,with an optimized base station layout strategy proposed to ensure a unique solution.The model achieves decimeter-level accuracy in positioning over coverage areas extending hundreds of meters.

关 键 词：异步TDOA 多根长馈线天线基站 多基站定位模型 Aberth-Newton迭代法 多解分析 

分 类 号：TN929.5[电子电信—通信与信息系统]