Research of autonomous celestial navigation based on new measurement model of stellar refraction

Cong Yu; Hong Tian; Hui Zhang; Bo Xu

doi:10.1117/12.2068329

18 September 2014 Research of autonomous celestial navigation based on new measurement model of stellar refraction

Cong Yu, Hong Tian, Hui Zhang, Bo Xu

Proceedings Volume 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment; 92821C (2014) https://doi.org/10.1117/12.2068329
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

Autonomous celestial navigation based on stellar refraction has attracted widespread attention for its high accuracy and full autonomy．In this navigation method, establishment of accurate stellar refraction measurement model is the fundament and key issue to achieve high accuracy navigation. However, the existing measurement models are limited due to the uncertainty of atmospheric parameters. Temperature, pressure and other factors which affect the stellar refraction within the height of earth's stratosphere are researched, and the varying model of atmosphere with altitude is derived on the basis of standard atmospheric data. Furthermore, a novel measurement model of stellar refraction in a continuous range of altitudes from 20 km to 50 km is produced by modifying the fixed altitude (25 km) measurement model, and equation of state with the orbit perturbations is established, then a simulation is performed using the improved Extended Kalman Filter. The results show that the new model improves the navigation accuracy, which has a certain practical application value.

Citation Download Citation

Cong Yu, Hong Tian, Hui Zhang, and Bo Xu "Research of autonomous celestial navigation based on new measurement model of stellar refraction", Proc. SPIE 9282, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 92821C (18 September 2014); https://doi.org/10.1117/12.2068329

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