Translator Disclaimer
26 January 2016 Influence of atmospheric turbulence on detecting performance of all-day star sensor
Author Affiliations +
Proceedings Volume 9903, Seventh International Symposium on Precision Mechanical Measurements; 990318 (2016) https://doi.org/10.1117/12.2211689
Event: Seventh International Symposium on Precision Mechanical Measurements, 2015, Xia'men, China
Abstract
All-day star sensor makes it possible to observe stars in all-day time in the atmosphere. But the detecting performance is influenced by atmospheric turbulence. According to the characteristic of turbulence in long-exposure model, the modulation transfer function, point spread function and encircled power of the imaging system have been analyzed. Combined with typical star sensor optical system, the signal to noise ratio and the detectable stellar magnitude limit affected by turbulence have been calculated. The result shows the ratio of aperture diameter to atmospheric coherence length is main basis for the evaluation of the impact of turbulence. In condition of medium turbulence in day time, signal to noise ratio of the star sensor with diameter 120mm will drop about 4dB at most in typical work environment, and the detectable stellar limit will drop 1 magnitude.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yue Pan, Hu Wang, Yang Shen, Yaoke Xue, and Jie Liu "Influence of atmospheric turbulence on detecting performance of all-day star sensor ", Proc. SPIE 9903, Seventh International Symposium on Precision Mechanical Measurements, 990318 (26 January 2016); https://doi.org/10.1117/12.2211689
PROCEEDINGS
6 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Cross-scale inference and wavefront reconstruction
Proceedings of SPIE (July 20 2014)
Laser guide stars for optical free-space communications
Proceedings of SPIE (February 23 2017)
Vibrated image restoration from a single frame
Proceedings of SPIE (October 17 1999)
Turbulence inner scale sensor for arbitrary atmospheric paths
Proceedings of SPIE (September 24 2007)
Anisoplanatism across wide fields at high-frame rates
Proceedings of SPIE (July 28 2010)

Back to Top