Results 21 to 30 of about 70 (70)
Some of the next articles are maybe not open access.
2020
Background/introduction: The EuroSafe Imaging Stars initiative has been running since 2016 with the aim of identifying imaging facilities in Europe and beyond that embody best practice in radiation protection and that are committed to putting the principles and concepts of...
openaire +1 more source
Background/introduction: The EuroSafe Imaging Stars initiative has been running since 2016 with the aim of identifying imaging facilities in Europe and beyond that embody best practice in radiation protection and that are committed to putting the principles and concepts of...
openaire +1 more source
Star image fusion and star recognition of multi-FOV star sensor
Proceedings of 2014 IEEE Chinese Guidance, Navigation and Control Conference, 2014A star image fusion method based on coordinate transformation is presented for a multi-FOV star sensor. By using coordinate transformation, simulated star images are generated and images from different FOVs are fused in the same coordinate system. Star image fusion is combined with triangle algorithm which is widely applied, and the star recognition ...
Junpeng Hua, Tao Zhang, Hailong Zhu
openaire +1 more source
Improvement of star identification based on star trace in star images
Measurement, 2017Abstract Digital zenith camera system is a highly accurate positioning instrument in geodetic astronomy. It can capture 16 star images in one experiment unit in different azimuthal camera orientations and the stars in each star image should be identified using star catalogue.
Xianyi Liu +4 more
openaire +1 more source
High accuracy star image locating and imaging calibration for star sensor technology
SPIE Proceedings, 2010Today aircraft attitude measurement technology plays an important role in an aircraft system because it can provide orientation for aircraft in action. Lately star sensor technology used in aircraft attitude measurement has become more and more popular because of its high accuracy, light weight, without attitude accumulation errors and other advantages.
Shaodi Zhang +3 more
openaire +1 more source
Improving night sky star image processing algorithm for star sensors
Journal of the Optical Society of America A, 2014In this paper, the night sky star image processing algorithm, consisting of image preprocessing, star pattern recognition, and centroiding steps, is improved. It is shown that the proposed noise reduction approach can preserve more necessary information than other frequently used approaches. It is also shown that the proposed thresholding method unlike
Mohammad Vali, Arbabmir +3 more
openaire +2 more sources
2018
Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information ...
openaire +1 more source
Background/introduction Description of activity and work performed Conclusion and recommendations Personal/organisational information ...
openaire +1 more source
2017
Background/Introduction Description of activity and work performed Conclusion and Recommendations Personal/Organisational information ...
openaire +1 more source
Background/Introduction Description of activity and work performed Conclusion and Recommendations Personal/Organisational information ...
openaire +1 more source
Fast registration method for sequential star images
Applied Optics, 2023Registration of sequential star images is an important component of space observation. Especially for onboard devices, the efficiency and robustness of registration algorithms are particularly important. The typical star image registration approach based on star matching has a low tolerance for incorrect matching, and the time cost will increase ...
Yong, Han, Desheng, Wen, Jie, Li
openaire +2 more sources
Star tracking method based on multiexposure imaging for intensified star trackers
Applied Optics, 2017The requirements for the dynamic performance of star trackers are rapidly increasing with the development of space exploration technologies. However, insufficient knowledge of the angular acceleration has largely decreased the performance of the existing star tracking methods, and star trackers may even fail to track under highly dynamic conditions ...
Wenbo, Yu, Jie, Jiang, Guangjun, Zhang
openaire +2 more sources
The Blurred Stars Image Preprocessing Technique of Star Sensor
2012 Symposium on Photonics and Optoelectronics, 2012When the star sensor with high dynamic rotation, blurred image preprocessing technique of the star sensor is need to discuss in detailed. Firstly, the motion-blurred image model in star sensor is given. Then, applying sub-windows technique to improve the dynamics of the star sensor and dynamic compensation for the area starlight reached, which adopt ...
Xiao fang Shen, Chao shan Liu
openaire +1 more source