| 一种单轴旋转捷联惯导的三位置对准方法 |
| |
| 引用本文： | 孙枫,曹通.一种单轴旋转捷联惯导的三位置对准方法[J].仪器仪表学报,2011,32(4). |
| |
| 作者姓名： | 孙枫 曹通 |
| |
| 作者单位： | 哈尔滨工程大学自动化学院,哈尔滨,150001 |
| |
| 摘 要： | 针对单轴旋转式捷联惯性导航系统,提出了一种基于惯性测量单元(inertial measurement unit,IMU)旋转的三位置初始对准方法.在系统可观测性分析的基础上,建立IMU姿态与失准角之间的关系,提出了使失准角估计偏差为零的三位置对准方法.与以往固定位置对准和两位置对准进行了比较,表明该方法可以消除不可观测的水平加速度计零偏和东向陀螺常值漂移对初始对准精度的影响,大大提高了系统初始对准精度.
|
| 关 键 词： | 捷联惯导系统 三位置对准 旋转调制 常值偏差 |
Three-position alignment of single-axis rotation strapdown inertial navigation system |
| |
| Sun Feng,Cao Tong.Three-position alignment of single-axis rotation strapdown inertial navigation system[J].Chinese Journal of Scientific Instrument,2011,32(4). |
| |
| Authors: | Sun Feng Cao Tong |
| |
| Affiliation: | Sun Feng,Cao Tong(Automation College,Harbin Engineering University,Harbin 150001,China) |
| |
| Abstract: | Based on IMU rotation,this paper presents a three-position initial alignment method for single-axis rotation strapdown inertial navigation system(SINS).At first,the mathematical relationship between IMU attitude and alignments is established based on system observability analysis.Then,a new three-position alignment method that makes alignment estimation errors to zero is presented.Result shows that compared with fixed position alignment and two-position alignment,the effects of unobservable horizontal accel... |
| |
| Keywords: | strapdown inertial navigation system three-position alignment revolution modulation constant bias |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
