GPS/INS超紧组合环路信息耦合模型及机理分析

Analysis on coupling model and mechanism of loop measurements in an ultra-tight GPS/INS integration

在对不同GPS/INS超紧组合模型特点分析的基础上构建超紧组合中惯性与卫星环路信息耦合模型,提出了环路复制信号参量的外部控制方法,论证了超紧组合模型中环路信息与惯性导航结果的耦合机理.最后,进行了超紧组合耦合实验验证和分析,结果表明,超紧组合系统环路信号参量偏差与惯性状态误差间有着紧密的内在联系和深层次的耦合机理.

An ultra-tightly coupled model and a method for controlling replica signals generation in the tracking loop are proposed based on the analysis of various ultra-tight GPS/INS integration model. Moreover, the intrinsic relationships between the loop measurements and INS navigation solutions in an ultra-tight GPS/INS Integration model are analyzed and demonstrated. Finally, the coupling experiments are carried out, and the experiment results indicate that there is an intrinsic relationship and a deep fusion mechanism between tracking loop measurements and INS navigation solutions in an ultra-tight GPS/INS integration model.