切比雪夫多项式拟合方法在车辆导航应用中的研究  

The Research of Chebyshev Polynomials' Fitting Applied in Vehicle Navigation

作　　者：倪海东[1] 陈义[1] 

机构地区：[1]同济大学测量与国土信息工程系,上海200092

出　　处：《全球定位系统》2009年第6期37-42,共6页Gnss World of China

摘　　要：车辆导航已成为交通领域一个研究热点。利用GPS导航系统可以获取良好的导航定位精度,但是GPS信号在城市大密度的建筑群中容易被遮挡,从而影响车辆导航过程。而DR系统虽能持续地提供服务,但是其精度随时间变差,从而无法取得良好效果。利用切比雪夫拟合方法,在GPS卫星信号失锁情况下,对DR数据进行拟合处理,并把处理结果与未失锁情况下的GPS导航数据进行比较,验证切比雪夫拟合效果。Vehicle navigation has become a hot topic in the field of transport. The use of GPS Navigation system can get a good accuracy, but the GPS signals can be easily be blocked by large-density buildings in urban areas, which will affecting the process of vehicle navigation. Although, the DR system can provide the continued services, but its accuracy is worse over time, unable to obtain good results. In this paper, Chebyshev fitting method will be used in the processing of DR data in the case of loss of GPS signal. At last, evaluate the effect of Chebyshev fitting method through the comparison of the processing results and the corresponded GPS navigation data.

关 键 词：GPS DR 切比雪夫多项式 拟合 

分 类 号：P228[天文地球—大地测量学与测量工程]