提出一种寻北/光学组合陆基航向校准系统，实现直升机静止状态下的航向测定，标定出飞机纵轴与北向的夹角，通过陆基条件下直升机初始航向装载，在低成本条件下提高了直升机航向精度。
Northfinding/Optics alibration system for land-based heading of helicopters was proposed, the system can measure land-based heading of static condition helicopters, calibrate the included degree of helicopters transverse axle and true north. The included degree is loaded on the helicopters. The helicopter heading accuracy can be improved under the condition of low cost.
