摘要
针对目前GNSS/INS组合导航算法在卫星信号失效后定位精度下降、系统易于发散的不足,提出了一种新的少可见星组合定位方法。在只有2颗可见星的情况下,利用多个时刻的两星位置信息、伪距信息以及惯性测量的相对运动信息,可以获得稳定、可信的定位结果,且不受惯导既有位置误差的影响,仿真验证了算法的正确性与有效性。
Considering the problems of the aecuracy deeline and the divergence of integrated filtering during outages of satellite signal in GNSS/INS integrated navigation, we proposed a new integrated navigation algorithm. With only two visible satellites, the algorithm can obtain stable and reliable positioning result by utilizing the position information and discontinuous pseudo ranges of the two satellites, and the relalive movemenl information at different moments. The positioning result is independent of the existing inertial navigation errors. The correctness and effectiveness of this algorithm are verified through simulations.
出处
《电光与控制》
北大核心
2016年第8期6-9,22,共5页
Electronics Optics & Control
基金
中国航天集团公司卫星应用研究院创新基金(2014-CXJJDH-06)
自然基金国际(地区)合作与交流项目(61320106010)
关键词
组合导航
双星
伪距约束
间断测量
integrated navigation
double satellites
pseudo range constraint
discontinuous measurement
