摘要
通过分析时间误差在组合导航系统速度估计和位置估计中的作用机理,导航系统中的时间误差不容忽视(尤其在机动条件下)。针对现有时间配准算法只能在特定条件下使用而无法有效解决多传感器导航系统中时间配准的不足,提出基于分段重叠的时间配准算法,通过分段处理使不同传感器的量测信息统一到同一处理时刻,通过重叠分段区,提高采样率,提高量测精度。仿真实验表明:新算法有效抑制了不规律的时间误差,保持了系统的精度和平稳性。
Through analysis of the working principle of the time error in speed estimation and position estimation in integrated navigation system, the time error in the navigation system cannot be ignored （especially in the flexible condition）. To solve current time registration method only in the specific condition and cannot use in integrated navigation system, the time registration method based on segmentation overlap is proposed, The measurement information of the different sensors can be unified into the same time by segment processing. The sampling rate and the precision can be improved by overlapping the segmentation areas. Simulations are performed and the results show that the novel method can overcome the irregular time error and can obtain system precision and stability.
出处
《传感器与微系统》
CSCD
北大核心
2012年第8期48-51,56,共5页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(61001154)
中央高校基本科研业务费自由探索计划资助项目(HEUCF110431)
关键词
时间误差
时间配准
分段重叠
组合导航
time error
time registration
segmentation overlap
integrated navigation
