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A Direct Attitude Determination Approach Based on GPS Double-Difference Carrier Phase Measurements

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  • Jianhua Cheng
  • Jing Wang
  • Lin Zhao

Abstract

The principle of the traditional attitude solution approach based on GPS (Global Position System) is to get the attitude matrix according to the relationship of coordinates. During the progress, the error of baseline position assumed in ECEF (Earth-Centered Earth-Fixed) and the error of coordinate transform between body frame and reference frame (ENU, East-North-Up) have been included in the result, and finally the precision of attitude determination is reduced. This contribution presents a new approach of attitude determination, in which the attitude angles are calculated by the double-difference carrier phase equation of GPS according to the relationship of attitude matrix and attitude angles through least-squares estimate method. The new approach predigests the procedure of attitude determination which reduces the error assumed. According to the analysis the precision of attitude determination is higher than that of traditional method. It is shown it gets a precise attitude result with the direct attitude determination method in the simulation. A novel algorithm is proposed to solve some problems. Simulation results show the effectiveness of the proposed algorithm.

Suggested Citation

  • Jianhua Cheng & Jing Wang & Lin Zhao, 2014. "A Direct Attitude Determination Approach Based on GPS Double-Difference Carrier Phase Measurements," Journal of Applied Mathematics, Hindawi, vol. 2014, pages 1-6, March.
    • Handle: RePEc:hin:jnljam:548083
    DOI: 10.1155/2014/548083
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