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A transfer alignment method for airborne distributed POS with three-dimensional aircraft flexure angles

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Abstract

An airborne distributed position and orientation system (POS) appears to satisfy the requirement of multi-point motion parameters measurement. This relies on transfer alignment from a high precision master system to slave systems to obtain high accuracy motion parameters of all points. A key problem for a distributed POS involves determining a method to treat the aircraft flexure appropriately and achieve high precision transfer alignment. In this study, the effect of aircraft flexure on transfer alignment accuracy for airborne earth observation is first analyzed. Based on this, the error model of transfer alignment that considers three-dimensional flexure angles are established, and a transfer alignment based on parameter identification unscented Rauch-Tung-Striebel smoother (PIURTSS) is proposed. The simulations results show that the transfer alignment method based on PIURTSS effectively improves the estimation accuracy.

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Acknowledgements

This work was supported in part by National Natural Science Foundation of China (Grant Nos. 61473020, 61421063, 61233005), National High Technology Research and Development Program of China (863 Program) (Grant Nos. 2015AA124001, 2015AA124002), and International (Regional) Cooperation and Communication Project (Grant No. 61661136007).

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Correspondence to Xiaolin Gong.

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Gong, X., Chen, L., Fang, J. et al. A transfer alignment method for airborne distributed POS with three-dimensional aircraft flexure angles. Sci. China Inf. Sci. 61, 092204 (2018). https://doi.org/10.1007/s11432-017-9213-9

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Keywords

  • position and orientation system
  • distribution
  • airborne earth observation
  • transfer alignment
  • unscented transformation
  • Rauch-Tung-Striebel smoother