差分GPS/SINS超紧组合在线标定与误差补偿方案设计  

Design of Online Calibration and Error Compensation of Differential GPS/SINS Ultra-Tight Integration

作　　者：葛俊[1] 王新龙[2] 车欢[3] 李群生[4] 

机构地区：[1]沈阳飞机设计研究所,沈阳110035 [2]北京航空航天大学宇航学院,北京100191 [3]航天恒星科技有限公司,北京100086 [4]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《航空兵器》2016年第5期18-24,共7页Aero Weaponry

基　　金：航空科学基金项目(20130151004;2015ZC51038);卫星应用研究院创新基金项目(2014_CXJJ-DH_01)

摘　　要：为了进一步提高GPS/SINS超紧组合系统的导航和误差标定精度,设计了一种基于载波相位差分的GPS/SINS超紧组合导航系统方案。一方面,超紧组合通过SINS对GPS跟踪环路的辅助,可以降低载波环路噪声带宽,减小码相关间隔,提高载波环和码环的跟踪精度;另一方面,载波相位提供高精度量测信息作为组合导航观测量,能够准确标定和补偿IMU常值误差,进一步提高了组合系统的导航精度。In order to further improve the navigation accuracy and error calibration accuracy of the GPS / SINS ultra-tight integrated system,a scheme for GPS / SINS ultra-tight integrated navigation system based on carrier phase difference is proposed. On the one hand,by aiding GPS tracking loop with the SINS,the carrier loop noise bandwidth and the code correlator spacing are reduced,the tracking precision of carrier ring and code loop are improved. On the other hand,the high precision measurement information is provided as integrated navigation measurement by carrier phase,which can accurately calibrate and compensate the IMU error. The navigation accuracy of GPS / SINS ultra-tight integrated system is improved further.

关 键 词：捷联惯性导航系统 全球定位系统 载波相位差分 在线标定 误差补偿 

分 类 号：V249.328[航空宇航科学与技术—飞行器设计]