摘要
旋转监控技术通过对惯性元件常值误差的抑制,能有效提高捷联惯导系统的导航定位精度,但由于标度因数误差的存在,降低了旋转调制效果。通过对单轴旋转方式下标度因数调制效果的分析,推导了单轴旋转下标度因数误差激励的角速率误差,并总结出旋转位置与角速率误差的对应规律,进而提出了最佳的双轴旋转方案,最大程度地抑制标度因数误差对捷联惯导系统的影响。计算机比对仿真结果证明:相比单轴旋转方案,双轴旋转方案将系统的纬度和经度误差减小10-2量级,更有效地减小由标度因数误差激励的惯导系统定位误差。
By inhibiting constant error of inertial components, rotation monitoring technology can improve navigation positioning precision of strapdown inertial navigation system（INS） effectively. However,the existing of scale factor error may decrease rotation modulation effect. By analyzing scale factor modulation effect in single-axis rotation, angular rate error inspired by scale factor in single-axis is derived, and corresponding rules of rotation position and angular rate error have been summarized. Best dual-axis rotation scheme has been proposed, which can inhibit scale factor error at the most. Simulation results shows that, comparing with single-axis rotation scheme, errors of system latitudes and longitudes are reduced by degree of 10-2 level by dual-axis rotation scheme, which can reduce navigation positioning errors inspired by scale factor error more effectively.
出处
《传感器与微系统》
CSCD
北大核心
2011年第12期35-39,共5页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(60974104)
关键词
捷联系统
旋转监控
标度因数误差
旋转方案
strapdown system
rotation monitoring
scale factor error
rotation scheme
