Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Boqian Xu"'
Publikováno v:
Sensors, Vol 24, Iss 7, p 2280 (2024)
On-orbit assembling space telescope (OAST) is one of the most feasible methods to implement a large-scale space telescope. Unlike a monolithic space telescope (such as Hubble Space Telescope, HST) or a deployable space telescope (such as James Webb S
Externí odkaz:
https://doaj.org/article/1abd818fcca64d6897b5ee819e0ebd97
Publikováno v:
Sensors, Vol 23, Iss 21, p 8802 (2023)
Salient object detection (SOD), which is used to identify the most distinctive object in a given scene, plays an important role in computer vision tasks. Most existing RGB-D SOD methods employ a CNN-based network as the backbone to extract features f
Externí odkaz:
https://doaj.org/article/3448d47dabe348ddbffec7dabad739fc
Publikováno v:
Sensors, Vol 23, Iss 16, p 7221 (2023)
RGB-D saliency detection aims to accurately localize salient regions using the complementary information of a depth map. Global contexts carried by the deep layer are key to salient objection detection, but they are diluted when transferred to shallo
Externí odkaz:
https://doaj.org/article/6b8a3b709164402aa1e68cbf099bab72
Publikováno v:
Sensors, Vol 23, Iss 10, p 4705 (2023)
Ellipticity performance of space telescopes is important for exploration of dark matter. However, traditional on-orbit active optical alignment of space telescopes often takes “minimum wavefront error across the field of view” as the correction g
Externí odkaz:
https://doaj.org/article/6d49d1b39c9942318ecc1eac8703987e
Publikováno v:
Sensors, Vol 23, Iss 10, p 4966 (2023)
The presence of manufacture error in large mirrors introduces high-order aberrations, which can severely influence the intensity distribution of point spread function. Therefore, high-resolution phase diversity wavefront sensing is usually needed. Ho
Externí odkaz:
https://doaj.org/article/5bcf2a0cb3b1489cb578561a641b90ac
Publikováno v:
Sensors, Vol 22, Iss 15, p 5584 (2022)
Phase retrieval wavefront sensing methods are now of importance for imaging quality maintenance of space telescopes. However, their accuracy is susceptible to line-of-sight jitter due to the micro-vibration of the platform, which changes the intensit
Externí odkaz:
https://doaj.org/article/4beb0f3a9abf4cebb255e64d4c65444f
Publikováno v:
Applied Sciences, Vol 10, Iss 23, p 8375 (2020)
Due to fabrication difficulties, separately-polished segmented mirrors cannot meet the co-phasing surface shape error requirements in the segmented telescope system. Applying the global radius of curvature (GRoC) actuation system for the individual s
Externí odkaz:
https://doaj.org/article/046380941f0544f2ab8aedf71642f81e
Autor:
Boqian Xu
Publikováno v:
Environment, Development and Sustainability. 25:3747-3770
Publikováno v:
Advanced Optical Manufacturing Technologies and Applications 2022; and 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022).
Autor:
Wei Wang, Meng Zhai, Gang Zhao, Shen Wang, Jifeng Liu, Jin Chang, Boqian Xu, Jifei Wang, Frank Grupp
Publikováno v:
Advanced Optical Manufacturing Technologies and Applications 2022; and 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022).