摘要
根据GPS/DR组合系统的导航定位原理,推导了利用GPS原始观测值与DR航位推算信息进行组合的Kalman滤波模型,并利用该滤波模型对GPS/DR原始观测数据进行航位解算。数据处理结果表明,即使在只有两颗GPS观测卫星的情况下,该滤波模型也可以充分利用GPS观测信息提高DR航位推算精度。
Based on the navigation theory of GPS/DR integrated system, a Kalman filtering model, which integrates the GPS original observation and dead-reckoning information, was presented. Then, we used it to deal with the GPS/DR original data. Experimental results indicats that even only two GPS satellites in view, the GPS observation can be used by this filtering model to improve the positioning precision of dead-reckoning system.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2009年第2期236-239,共4页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2006AA12Z325)
武汉市晨光计划资助项目(200850731375)
国家创新研究群体科学基金资助项目(40721001)
