期刊文献+

旋转调制式寻北仪滤波技术研究 被引量:13

Study of Filter Used in Revolution-Modulation North-Finder
下载PDF
导出
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. 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.
出处 《北京理工大学学报》 EI CAS CSCD 北大核心 2005年第8期718-721,共4页 Transactions of Beijing Institute of Technology
基金 国家部委预研项目(413090503)
关键词 寻北仪 旋转调制 低通滤波 快速傅里叶变换 north-finder revolution-modulation low-pass filter FFT
  • 相关文献

参考文献7

  • 1Priel B.Method to improve north finder accuracy[Z].Symposium Gyro Technology,Stuttart,Germany,1989.
  • 2Qi Yutong,Chen Fenyu,Su Haibin.Error analysis of a dynamically turned gyro strapdown north—finder[J].Journal of Beijing Institute of Technology,1 999,8(3):331—336.
  • 3Xie Ling,Cui Yan,Si Cao,et a1.Automatic fast north—seeking system for land vehicle for navigator[J].Journal of Beijing Institute of Technology,1 995,4(1):86—91.
  • 4邹向阳,孙谦,陈家斌,徐建华.连续旋转式寻北仪的寻北算法及信号处理[J].北京理工大学学报,2004,24(9):804-807. 被引量:18
  • 5Fincke H.Strapdown inertial sensing unit rotation(SISUR)a new approach to inertial navigation [J].IEEE,1978(1):132—145.
  • 6Heister H, Lechner W, Schmechtig O. Comparative trial on automated north-seeking gyros [ Z ].Symposium Gyro Technology, Stuttart, Germany,1988.
  • 7Wu Weqi. Research on the continuous rotary northseeking techonoloogy[Z]. International Conference on Navigation Guide and Control, Harbin, 2001.

二级参考文献5

共引文献17

同被引文献97

引证文献13

二级引证文献49

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部