Instrumentation, Techniques, and Measurement

Effect of the outer lever arm on in-motion gyrocompass alignment for fiber-optic gyro strapdown inertial navigation system

[+] Author Affiliations
Yueyang Ben, Qiang Zhang, Xinle Zang, Lei Huang, Guochen Wang

Harbin Engineering University, College of Automation, Harbin, Heilongjiang Province, China

Qian Li

Harbin Institute of Technology, Department of Electrical Engineering and Automation, Harbin, Heilongjiang Province, China

Opt. Eng. 56(4), 044106 (Apr 25, 2017). doi:10.1117/1.OE.56.4.044106
History: Received January 31, 2017; Accepted March 29, 2017
Text Size: A A A

Abstract.  Fiber-optic gyro strapdown inertial navigation system is typically physically separated from the log giving an aiding velocity. This results in a velocity difference under angular motions, otherwise known as the outer lever arm effect. The mathematical relationship between the velocity difference and the outer lever arm is derived, and the effect of the outer lever arm on angular velocity compensation and harmful acceleration compensation is analyzed using the structure of in-motion gyrocompass alignment. Based on this analysis, a method for outer lever arm correction is given to counteract the outer lever arm effect on the performance of the alignment. Simulation and trial tests are then used to verify the analysis results.

© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Yueyang Ben ; Qiang Zhang ; Xinle Zang ; Lei Huang ; Qian Li, et al.
"Effect of the outer lever arm on in-motion gyrocompass alignment for fiber-optic gyro strapdown inertial navigation system", Opt. Eng. 56(4), 044106 (Apr 25, 2017). ; http://dx.doi.org/10.1117/1.OE.56.4.044106


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement


 

  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.