| 旋转调制式寻北仪滤波技术研究 |
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| 引用本文： | 徐建华,谢玲,高亚楠,陈家斌.旋转调制式寻北仪滤波技术研究[J].北京理工大学学报,2005,25(8):718-721. |
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| 作者姓名： | 徐建华 谢玲 高亚楠 陈家斌 |
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| 作者单位： | 北京理工大学,信息科学技术学院自动控制系,北京,100081 |
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| 摘 要： | 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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| 关 键 词： | 寻北仪 旋转调制 低通滤波 快速傅里叶变换 旋转方法 调制式 寻北仪 低通滤波器 技术研究 Used Filter 估计精度 方位角 结果 实验 系统干扰 随机漂移 设计 影响 寻北精度 误差 刻度因数 趋势项 常值漂移 |
| 文章编号： | 1001-0645(2005)08-0718-04 |
| 收稿时间： | 09 29 2004 12:00AM |
| 修稿时间： | 2004年9月29日 |
Study of Filter Used in Revolution-Modulation North-Finder |
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| XU Jian-hu,XIE Ling,GAO Ya-nan and CHENG Jia-bin.Study of Filter Used in Revolution-Modulation North-Finder[J].Journal of Beijing Institute of Technology(Natural Science Edition),2005,25(8):718-721. |
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| Authors: | XU Jian-hu XIE Ling GAO Ya-nan and CHENG Jia-bin |
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| Institution: | Department of Automatic Control, School of Information Science and Technology, Beijing Institute of \=Technology, Beijing100081, China;Department of Automatic Control, School of Information Science and Technology, Beijing Institute of \=Technology, Beijing100081, China;Department of Automatic Control, School of Information Science and Technology, Beijing Institute of \=Technology, Beijing100081, China;Department of Automatic Control, School of Information Science and Technology, Beijing Institute of \=Technology, Beijing100081, China |
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| Abstract: | In order to improve the precision of the north-finder, a method of continuous revolution in constant rate to modulate the signals of the gyro and accelerometer is used, and the signals can be demodulated by an integral method. Thus, the effects of the gyro's constant drift and low frequency part of random drift are restrained. A low-pass filter is designed to eliminate high frequency disturbance caused by mechanical rotation and gyro noise. Experiment results show that these two measures can increase the precision of the north-finder. |
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| Keywords: | north-finder revolution-modulation low-pass filter FFT |
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