Development of an astro-inertial hybrid navigation system and a star tracker

Details Development of an astro-inertial hybrid navigation system and a star tracker Development of an astro-inertial hybrid navigation system and a star tracker

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981acaas...2...75s&link_type=abstract

Acta Aeronautica et Astronautica Sinica, vol. 2, Mar. 1981, p. 75-86. In Chinese, with abstract in English.

Computer Science

Performance

Astronavigation, Electronic Control, Hybrid Navigation Systems, Instrument Errors, Position Errors, Star Trackers, Equations Of State, Feedback Control, Performance Prediction, Reliability Engineering, Signal To Noise Ratios, Telescopes

Scientific paper

Simple inertial or Doppler navigation has a common defect that position errors always increase with flight time or distance, therefore an external reference system is necessary. In order to meet the needs of high accuracy and reliability for modern vehicle navigation, modern navigation systems show a tendency to be of a hybrid type. This paper presents an astro-inertial hybrid navigation system, which is physically more rational and accurate and comes into particular use in various modern vehicles. A star tracker in astronavigation is an essential facility for obtaining the measurement information of the hybrid system. This paper summarized the procedure in research and development of an automatic star tracker and the measures to solve the principal technical problems, and also presents all related formulae. Experimental results have proved that the design is reasonable and has attained the expected characteristics, according to which the designed star tracker on the ground is capable of tracking stars up to brightness of the second class at night and the brightest stars under the background of certain brightness in daytime.

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