摘要
超宽带UWB(Ultde Wide Band)定位是近几年发展起来的无线定位技术,UWB信号具有抗多径效应好、定位精度和刷新率高等优点,但UWB一般只能用于进行室内高精度定位。而差分GPS(DGPS)的室外定位精度能达到分米级。描述了结合UWB和DGPS(Differential Global Position System)的定位方法,采用融合Savitzky-Golay滤波器与粒子滤波器来解决不同传感器的数据融合,实现室内外的无缝定位切换,应用在需要室内室外联合定位的场合。实验表明,采用融合不同滤波器进行处理后,能有效地提高定位精度。
Ultra Wide Band（UWB） localisation is a newly developed wireless localisation technology in recent years.UWB signal has many advantages：good in anti-multipath,high localisation accuracy and high refreshing rate.But the applications of UWB are usually of indoor use.The accuracy of outdoor localisation of Differential GPS（DGPS） can approach decimetre level.In this paper we introduced a localisation method which integrates UWB and DGPS localization data,seamless switch between indoor and outdoor localisation is realised by combining Savitzky-Golay filter and Particle filter to resolve fusion of data derived from different sensors.It can be used in the occasion where both indoor and outdoor localisation data is needed.Experiment proves that after using the fusion of different filters to process,the localisation accuracy can be improved effectively.
出处
《计算机应用与软件》
CSCD
2010年第5期212-215,共4页
Computer Applications and Software
