【摘要】 为了克服平面谐振腔调节精度高、损耗大的困难,提出了一种新型空间谐振式陀螺的谐振腔结构。并利用光学变换矩阵和菲涅尔-基尔霍夫衍射积分公式建立数学模型,通过MATLAB仿真计算谐振腔各腔镜因失调引起的衍射损耗。计算结果表明当谐振腔边长为4cm,入射光束束腰半径为0.25mm时,凹面镜的曲率半径为0.397m,反射镜失调引起的衍射损耗近似为0,即失调对陀螺的性能没有影响。得到陀螺的极限灵敏度为1.54°/h。更多还原

【Abstract】 The resonator structure of a novel spatial resonator gyroscope is proposed.It overcome high adjust precision and large losses of resonator which consists of four planar mirror.The mathematical model is established by unutilized optical transformation matrix and Fresnel-Kirchhoff diffraction integral formula.The diffraction loss resulted from maladjustment of resonator mirrors is calculated with MATLAB.The results indicates that when the resonator length is 4cm,the waist radius of incidence light beam is 0.25mm and the curvature radius of concave mirror is 0.397m,the diffraction loss resulted from maladjustment of reflector is close to zero.It is proved that maladjustment has no effects to performance of the gyroscope.The theory precision of the Gyroscope is 1.54°/h.更多还原