A method of removing abnormal data from linear array total station astronomical measurement based on star position prediction

doi:10.11947/j.AGCS.2023.20210675

Abstract

Abstract: Aiming at the trend of miniaturization and automation of astronomical surveying instruments, this paper proposes a method for astronomical surveying data processing based on linear array total station. First, the methods for star centroid extraction and observation epoch determination are introduced. Then, the causes of gross errors are analyzed, and a method for gross error elimination based on star centroid prediction is proposed. Finally, two field experiments are designed and conducted, and the positioning accuracies are compared before and after the gross error elimination. The results show that the single-period positioning results are relatively stable after the gross errors are eliminated, and the mean square error of 8-period positioning result is less than ±0.3", which meets the requirements of first-class astronomical measurement. At the same station, after four-night joint measurement, the errors of astronomical longitude and latitude are reduced to 0.23" and 0.61", respectively. Compared with traditional astronomical surveying instruments, our method not only achieves miniaturization, automation, and precision, but also avoids human-eye observation, which doubles the observation efficiency.

Key words: line scan camera, astronomical measurement, gross error elimination, internal accord accuracy, external accord accuracy

CLC Number:

P222

ZHANG Xu, ZHANG Chao, ZHAN Yinhu, MAO Qingzhou. A method of removing abnormal data from linear array total station astronomical measurement based on star position prediction[J]. Acta Geodaetica et Cartographica Sinica, 2023, 52(4): 571-578.

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