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兵工学报 ›› 2014, Vol. 35 ›› Issue (4): 559-566.doi: 10.3969/j.issn.1000-1093.2014.04.019

• 研究简报 • 上一篇    下一篇

一种任意二位置陀螺寻北模型及其数据处理技术

薛海建, 郭晓松, 周召发   

  1. (第二炮兵工程大学 兵器发射理论与技术国家重点学科实验室, 陕西 西安 710025)
  • 收稿日期:2013-06-18 修回日期:2013-06-18 上线日期:2014-05-26
  • 作者简介:薛海建(1986—),男,博士研究生
  • 基金资助:
    国家自然科学基金项目(41174162)

Model and Data Processing of Arbitrary Two-position North Finder

XUE Hai-jian, GUO Xiao-song, ZHOU Zhao-fa   

  1. (State Key Discipline Laboratory of Armament Launch Theory and Technology,the Second Artillery EngineeringUniversity, Xi'an 710025, Shaanxi, China)
  • Received:2013-06-18 Revised:2013-06-18 Online:2014-05-26

摘要: 为提高寻北系统的寻北效率,提出了一种任意二位置陀螺寻北模型,可以在相差较小的2个位置进行信号采集,减少转台转动时间,在一定程度上节省了整个寻北过程的时间。为进一步提高寻北精度,引入小波阈值消噪方法,提出了一种新的双参数可调阈值函数,表达式简单,无需分段取值易于计算。研制原理样机进行了任意二位置寻北试验,结果表明:160 s内的寻北精度优于0.02°,在一定程度上节省了寻北时间,新阈值函数消噪大大提高了寻北精度。

关键词: 控制科学与技术, 寻北仪, 任意二位置, 陀螺漂移, 小波阈值消噪, 阈值函数

Abstract: In order to improve the efficiency of north finder, a gyro north finder model for arbitrary two-position north finding is presented. It can collect the signals in two places which are less different, reduce the rotation time of turntable, and save the whole north finding time to some extent. In order to further improve the north finding accuracy, a wavelet threshold de-noising method is introduced, and a new double- parameter adjustable threshold function is proposed. The function is simple and easy to calculate without segmental values. The north-seeking experiment in arbitrary two-position is conducted on the developed principle prototype. The results show that the north finding accuracy within 160 s is higher than 0.02°, the north-finding time is saved,and the new de-noising threshold function greatly improves the north finding accuracy.

Key words: control science and technology, north finder, arbitrary two-position, gyro drift, wavelet de-noising threshold, threshold function

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