Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Qunli Xia"'
Autor:
Dongdong Yao, Qunli Xia
Publikováno v:
Aerospace, Vol 11, Iss 8, p 680 (2024)
Aiming at the interception constraint posed by defensive aircrafts against hypersonic morphing vehicles (HMVs) during the terminal guidance phase, this paper designed a guidance law with the finite-time convergence theory and control allocation metho
Externí odkaz:
https://doaj.org/article/fb5984d44e814c53b9eb51798c2c0e81
Publikováno v:
Electronic Research Archive, Vol 31, Iss 6, Pp 3453-3470 (2023)
The existing classification methods of LiDAR point cloud are almost based on the assumption that each class is balanced, without considering the imbalanced class problem. Moreover, from the perspective of data volume, the LiDAR point cloud classifica
Externí odkaz:
https://doaj.org/article/9970255490c2435c9d3acc6171ba6d49
Publikováno v:
Aerospace, Vol 10, Iss 11, p 940 (2023)
The disturbance rejection rate (DRR) is an inherent problem of the seeker. The additional line-of-sight (LOS) angular velocity information of the seeker caused by the DRR will affect the attitude of the aircraft through the guidance system, thus form
Externí odkaz:
https://doaj.org/article/ca28771c2ef14553ac30858000fdf6aa
Publikováno v:
Advances in Mathematical Physics, Vol 2023 (2023)
Neutrosophic logic is frequently applied to the engineering technology, scientific administration, and financial matters, among other fields. In addition, neutrosophic linear systems can be used to illustrate various practical problems. Due to the co
Externí odkaz:
https://doaj.org/article/5cd04ca9ddbf40daae7890afb3f70e6a
Autor:
Dongdong Yao, Qunli Xia
Publikováno v:
Aerospace, Vol 10, Iss 9, p 795 (2023)
In an effort to address the problem of hypersonic morphing vehicles reaching the target while avoiding no-fly zones, an improved predictor–corrector guidance method is proposed. Firstly, the aircraft motion model and the constraint model are establ
Externí odkaz:
https://doaj.org/article/80f1e9f801d548f1883f0ab707f17ab3
Autor:
Haixi Wu, Licheng Diao, Ke Xue, Qian Zhao, Xiaoqing Zhao, Qunli Xia, Jie Zheng, Meng Pan, Hua Cao
Publikováno v:
Frontiers in Immunology, Vol 13 (2022)
Dermatomyositis (DM) is an idiopathic inflammatory myopathy primarily involving skin and muscles. Clinically amyopathic dermatomyositis (CADM), a subset of DM, presents with characteristic cutaneous manifestations without clinical evidence of myositi
Externí odkaz:
https://doaj.org/article/06d21009006a4dd7bd09cb0f1391061d
Publikováno v:
Journal of Function Spaces, Vol 2022 (2022)
In modern world, most of the optimization problems are nonconvex which are neither convex nor concave. The objective of this research is to study a class of nonconvex functions, namely, strongly nonconvex functions. We establish inequalities of Hermi
Externí odkaz:
https://doaj.org/article/6e9bfd7a30d0452aa87418ae9b72c71c
Publikováno v:
International Journal of Aerospace Engineering, Vol 2021 (2021)
We propose a new DRR (Disturbance Rejection Rate) compensation method of a roll-pitch seeker based on ESO (extended state observer). The characteristics of a roll-pitch seeker and the DRR definition of two frames of a roll-pitch seeker are analyzed.
Externí odkaz:
https://doaj.org/article/2b52bef35d574f7c8e8e2de86c1a48a7
Publikováno v:
International Journal of Aerospace Engineering, Vol 2021 (2021)
An online estimation algorithm of landing footprints based on the drag acceleration-energy profile is proposed for an entry hypersonic vehicle. Firstly, based on the Evolved Acceleration Guidance Logic for Entry (EAGLE), drag acceleration-energy prof
Externí odkaz:
https://doaj.org/article/b053c7e614384bc7a7fad92b95048ea6
Autor:
Guanqun Zhou, Qunli Xia
Publikováno v:
International Journal of Aerospace Engineering, Vol 2020 (2020)
An off-axis strapdown seeker in missile may lead to a minimum field-of-view (FOV) angle constraint problem. The goal of this paper is to deal with the problem in guidance. Analysis of kinematics proves that on the premise of attacking stationary targ
Externí odkaz:
https://doaj.org/article/bee9b522d470495583de5248c216a29c