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Study of Filter Used in Revolution-Modulation North-Finder
Author(s): 
Pages: 718-721
Year: Issue:  8
Journal: TRANSACTIONS OF BEIJING INSTITUTE OF TECHNOLOGY

Keyword:  寻北仪旋转调制低通滤波快速傅里叶变换;
Abstract: 研究用机械旋转和数字滤波的方法提高寻北仪精度.利用连续恒速旋转方法对陀螺信号进行调制,用积分方法进行解调,以抑制陀螺常值漂移、漂移趋势项和刻度因数误差对寻北精度的影响,用设计的低通滤波器对含有随机漂移和系统干扰的陀螺信号进行滤波.实验结果表明这两种措施可有效提高寻北仪方位角估计精度.
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