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An attitude determination method based on convected Euler angle error model for SINS/CNS integrated system

Jianli Li 1, Yun Wang 1, Pengfei Dang 1, Zhaoxing Lu 1,2

Article ID: 694
Vol 3, Issue 2, 2018, Article identifier:

VIEWS - 626 (Abstract) 180 (PDF)

Abstract

The attitude determination method plays an important role in SINS/CNS integrated system for spacecraft. Since the misalignment angels are indirect measurements, the misalignment angle model used in the existing attitude determination method can cause transformation errors. To solve the problem, an attitude determination method based on convected Euler angle error model for SINS/CNS integrated system is proposed. The attitude error propagation is analyzed, and the convected Euler angle error model is derived. Furthermore, the state equation of SINS/CNS integrated system is established. The Kalman filter estimates and compensates the Euler angle errors. Finally, simulation results verified that the proposed method can improve the attitude accuracy compared to the conventional misalignment angle method.

Keywords

Attitude determination method; SINS/CNS integrated system; Misalignment angels; Transformation errors; Convected Euler angle errors

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DOI: http://dx.doi.org/10.18063/som.v3i2.694
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