Application of star recognition algorithm based on video measuring robot in automatic astronomical orientation

doi:10.13474/j.cnki.11-2246.2019.0035

Abstract

Abstract:

Astronomical orientation is a high precision orientation method to determine the orientation by observing celestial bodies, which plays an important role in astronomical measurement. Automatic astronomical orientation is the developing trend of astronomical orientation. Based on video total station work mode, a star identification orientation method is proposed. First, it uses video measuring to continuously and rapidly shoot many stars. Second, all the stars are identified with the elevation angle and azimuth angle difference as matching conditions. Finally, the directional results are obtained by using the observed data and the calculated stellar data relation, to realize the automatic astronomical orientation. In this paper, the star recognition error caused by coordinate error of measurement station and observation error is analyzed. Therefore, the matching threshold is given to further improve the precision and accuracy of matching.

Key words: astronomical orientation, video total station, star identification, video measuring, matching threshold

CLC Number:

P228

YE Kai, ZHANG Chao, SHI Chunlin, MI Kefeng, ZHAN Yinhu. Application of star recognition algorithm based on video measuring robot in automatic astronomical orientation[J]. 测绘通报, 2019, 0(2): 12-16,44.

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