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Method of Finding Arcsines and Linear Interpolation in Open-Loop Fiber Optic Gyroscopes Based on DSP
Author(s): 
Pages: 499-502
Year: Issue:  4
Journal: TRANSACTIONS OF BEIJING INSTITUTE OF TECHNOLOGY

Keyword:  光纤陀螺刻度因数非线性度;
Abstract: 研究数字式开环光纤陀螺中利用查表法求反正弦函数arcsine.在陀螺的标定中,根据测得的数据利用最小二乘和最小范数法求arcsine的拟合方程系数,以该方程作出对应动态范围±300°/s角速度的2 001个数据的arcsine表.理论和试验表明,对于大动态范围(±300°/s)输出的光纤陀螺,利用该方法结合线性插值法提高了输出的线性度、对称性和精度,同时降低了对器件的要求,简化了运算,提高了DSP的处理速度.
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