Acta Optica Sinica, Volume. 33, Issue 3, 301003(2013)
Method of High Accuracy Celestial Altitude Obtainment in Vessel Navigation
Positioning accuracy of vessel celestial navigation is limited by the low measurement accuracy of celestial altitude. For solving this problem, a novel method of celestial altitude determination is proposed. Refraction angles are obtained by two star sensors using a star pattern recognition method; the celestial altitudes are calculated accurately from the refraction angles according to the atmospheric refraction model. Simulation results show that the final vessel positioning accuracy can be better than 23 m under the conditions that the star sensor accuracy is 1″ and the observation altitude is about 6°. The effect of measurement accuracy of refraction angle, observation celestial heights and atmospheric refraction model accuracy on positioning accuracy is analyzed.
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Ning Xiaolin, Wang Longhua. Method of High Accuracy Celestial Altitude Obtainment in Vessel Navigation[J]. Acta Optica Sinica, 2013, 33(3): 301003
Category: Atmospheric Optics and Oceanic Optics
Received: Sep. 18, 2012
Accepted: --
Published Online: Jan. 25, 2013
The Author Email: Xiaolin Ning (ningxiaolin@buaa.edu.cn)