利用特征星进行快速天文定向

摘要

The method of fast astro-geodetic orientation by observing the constellation stars is put forward in this paper. With the help of software Stellarium, the constellation-star database is established. Considering the main error sources in astronomical orientation, the tactic of choosing star, which can improve the orientation precision, is researched. According to the practical surveying experiment, inner precision of orientation by surveying constellation stars can be superior to 0.5＂, and outer precision can be superior to 1.0＂.%提出了利用特征星进行快速天文定向。借助星空模拟软件Stellarium构建了特征星星库,并结合天文定向中的主要误差源,研究了选星策略,提高了定向精度。实际观测实验表明,利用特征星快速定向的内符合精度可优于0.4＂,外符合精度可优于1.0＂。