The result shows that the third model can acquire higher precision when using the above gyro to seek north, improving from 1 mil by zero-order fitting model to 0.5 mil by second-order fitting model.

• 实验结果表明；就本文实验所用陀螺；含二次项误差的模型寻北精度较高；使寻北精度从零次拟合模型的1密位降低到0.；5密位。