0 引言
1 坐标系定义及坐标系转换
2 单轴旋转调制方案
2.1 发射坐标系下的滚转角估计方法
2.2 基于旋转调制法的滚转角辨识方法
3 仿真试验
3.1 仿真弹道
3.2 仿真条件
表1 陀螺仪仿真参数Tab.1 Simulation parameters of gyroscope |
| Metrics | Metric size |
|---|---|
| Gyroscope bias | 100°/h |
| Gyroscope bias repeatability | 17.1°/h |
| Gyroscope bias stability | 15.7°/h |
| Gyroscope scale coefficient | 4000ppm |
| Gyroscope scale coefficient repeatability | 270.5ppm |
| Gyroscope scale coefficient stability | 268.1ppm |
| Gyroscope noise | 247.5°/h |
3.3 仿真结果
图10 无旋转调制滚转角辨识结果Fig.10 Roll angle identification results without rotation modulation |
表2 滚转角辨识统计结果Tab.2 Statistical values of roll Angle identification results |
| Simulation scenarios | Mean | Variance |
|---|---|---|
| No rotational modulation | -0.64° | 3.32° |
| rotational modulation | -0.37° | 0.24° |
图12 无旋转调制滚转角辨识结果Fig.12 Roll angle identification results without rotation modulation |
表3 滚转角辨识统计结果Tab.3 Statistical values of roll Angle identification results |
| Simulation scenarios | Mean | Variance |
|---|---|---|
| No rotational modulation | -0.75° | 10.60° |
| rotational modulation | -0.42° | 0.69° |