上海交通大学学报(英文版) ›› 2015, Vol. 20 ›› Issue (5): 558-564.doi: 10.1007/s12204-015-1617-8

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A Novel Gyrocompass Alignment Method Under Large Azimuth Misalignment Angle

WEI Feng-mei1,2* (魏凤梅), ZHANG Jian-pei1 (张健沛), YANG Jing1 (杨 静),JIANG Shu-qiang3 (姜述强), XIE Song-lin3,4 (谢松霖)   

  1. (1. College of Computer Science and Technology, Harbin Engineering University, Harbin 150001, China; 2. School of Technology, Harbin University, Harbin 150086, China; 3. College of Automation, Harbin Engineering University, Harbin 150001, China; 4. 7801 Institute, Changsha 410000, China)
  • 发布日期:2015-10-29
  • 通讯作者: WEI Feng-mei (魏凤梅) E-mail:benpao2002heu407@163.com

A Novel Gyrocompass Alignment Method Under Large Azimuth Misalignment Angle

WEI Feng-mei1,2* (魏凤梅), ZHANG Jian-pei1 (张健沛), YANG Jing1 (杨 静),JIANG Shu-qiang3 (姜述强), XIE Song-lin3,4 (谢松霖)   

  1. (1. College of Computer Science and Technology, Harbin Engineering University, Harbin 150001, China; 2. School of Technology, Harbin University, Harbin 150086, China; 3. College of Automation, Harbin Engineering University, Harbin 150001, China; 4. 7801 Institute, Changsha 410000, China)
  • Published:2015-10-29
  • Contact: WEI Feng-mei (魏凤梅) E-mail:benpao2002heu407@163.com

摘要: Conventional gyrocompass alignment methods are based on relatively small azimuth misalignment angles. However, a marine strapdown inertial navigation system may face large azimuth misalignment angle caused by a failed coarse alignment algorithm. This paper provides a novel gyrocompass alignment method to solve the problem. Effects of system parameters are analyzed and the proper scenario of parameter switch based on the classic control theories is derived. Test results show that compared with the conventional methods, our method can accomplish the initial alignment quickly and accurately under large azimuth misalignment angle.

关键词: strapdown, inertial navigation system, alignment

Abstract: Conventional gyrocompass alignment methods are based on relatively small azimuth misalignment angles. However, a marine strapdown inertial navigation system may face large azimuth misalignment angle caused by a failed coarse alignment algorithm. This paper provides a novel gyrocompass alignment method to solve the problem. Effects of system parameters are analyzed and the proper scenario of parameter switch based on the classic control theories is derived. Test results show that compared with the conventional methods, our method can accomplish the initial alignment quickly and accurately under large azimuth misalignment angle.

Key words: strapdown, inertial navigation system, alignment

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