摘要
标定激光陀螺仪与g有关偏置可以进一步提高双轴旋转惯导的定位精度。在传统的六位置标定方法上增加四个倾斜的位置,形成一套十位置自标定算法。该算法不仅可以标定惯性器件的常值偏置,比例因数误差和失准角,还能标定陀螺仪的与g有关偏置。静态试验表明,在标定和补偿了陀螺仪与g有关偏置项后,经纬度误差(尤其是经度误差)随着时间的变化量明显减小。与传统的六位置法相比,经度误差随着时间发散速度明显降低。该自标定法在静态时至少可以提高50%的系统精度。
Improved position precision for a dual-axis rotational inertial navigation system is gotten after calibrating the gyro＇s g-dependent bias. By experiencing four more positions with tilt attitudes than conventional six-position method, not only constant biases, scale factor errors and misalignment errors, but also g-dependent biases can be calibrated. Static experiments show that latitude error and longitude error are remained within a small range over time. Compared with the traditional six-position method, the accuracy of longitude is improved about one time, and the divergence speed of longitude error becomes slow obviously. Using this self-calibration method, the accuracy of system is imoroved bv more than 50% in static state
作者
姜睿
杨功流
陈雅洁
王晶
周潇
JIANG Rui, YANG Gong-liu, CHEN Ya-jie, WANG Jing, ZHOU Xiao(1. School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China; 2. Science and Technology on Inertial Laboratory, Beijing 100191, Chin)
出处
《中国惯性技术学报》
EI
CSCD
北大核心
2017年第5期664-669,共6页
Journal of Chinese Inertial Technology
基金
国家自然科学基金(6134044
11202010)
中央高校基本科研业务费专项资金资助项目(YWF-10-01-1330)
