A Fast Alignment Method for Aircraft Land-Based Takeoff

Conference paper

Abstract

Both speed and accuracy are important indexes for initial alignment of inertial navigation system (INS), so rapid and high precision transfer alignment has been widely researched in the past decade. This paper analyzes aircraft’s requirements for initial alignment before taking off in modern warfare. A new alignment method is proposed combining optical collimation and transfer alignment to overcome the disadvantages of limited maneuver and poor observable degree in aircraft’s initial alignment. A new scheme of transfer alignment is presented, and the optical azimuth transitive relation between SINS (airborne INS) and MINS (master inertial navigation systems) is derived. Both angular rate plus acceleration matching model and relative azimuth obtained by optical collimation are fed into Kalman filter to estimate the installation angle of two INSs. Simulation results show that the new ground alignment method has fast convergence speed and high alignment accuracy to meet the requirements of modern aircraft’s initial alignment.

Keywords

Aircraft Fast alignment Mathematic transfer Optical collimation Relative azimuth 

Notes

Acknowledgments

The author wishes to thank the IEEE and Chinese Industrial Engineering Institution for providing this template and all colleagues who previously provided technical support.

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Copyright information

© Atlantis Press and the author(s) 2016

Authors and Affiliations

  1. 1.Department of AstronauticsHarbin Institute of TechnologyHarbinChina
  2. 2.China Academy of Launch Vehicle TechnologyBeijingChina

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