# MSG_EULER_ORIEN_STD_DEV
该数据包用于描述：卡尔曼滤波P矩阵的姿态角标准差
| Packet ID | 0x56 | ||||
|---|---|---|---|---|---|
| Length | 12 | ||||
| Read / Write | Read | ||||
| Offset | Size | Format | Field | Unit | Description |
| 0 | 4 | float32_t | Roll_standard_deviation | rad | 横滚角标准差 |
| 4 | 4 | float32_t | Pitch_standard_deviation | rad | 俯仰角标准差 |
| 8 | 4 | float32_t | Heading_standard_deviation | rad | 偏航角标准差 |