全文获取类型
收费全文 | 672篇 |
免费 | 82篇 |
国内免费 | 169篇 |
专业分类
航空 | 503篇 |
航天技术 | 247篇 |
综合类 | 100篇 |
航天 | 73篇 |
出版年
2024年 | 2篇 |
2023年 | 17篇 |
2022年 | 29篇 |
2021年 | 40篇 |
2020年 | 22篇 |
2019年 | 28篇 |
2018年 | 11篇 |
2017年 | 21篇 |
2016年 | 29篇 |
2015年 | 26篇 |
2014年 | 39篇 |
2013年 | 21篇 |
2012年 | 33篇 |
2011年 | 66篇 |
2010年 | 52篇 |
2009年 | 48篇 |
2008年 | 41篇 |
2007年 | 38篇 |
2006年 | 32篇 |
2005年 | 43篇 |
2004年 | 37篇 |
2003年 | 33篇 |
2002年 | 31篇 |
2001年 | 40篇 |
2000年 | 23篇 |
1999年 | 14篇 |
1998年 | 23篇 |
1997年 | 31篇 |
1996年 | 11篇 |
1995年 | 8篇 |
1994年 | 13篇 |
1993年 | 4篇 |
1992年 | 5篇 |
1991年 | 3篇 |
1990年 | 6篇 |
1989年 | 2篇 |
1988年 | 1篇 |
排序方式: 共有923条查询结果,搜索用时 0 毫秒
921.
《中国航空学报》2023,36(1):342-355
Minimum-energy formation achievement problems for networked multiagent systems are investigated, where information networks with leaderless and leader-follower structures are respectively addressed and information networks are randomly switching. The critical feature of this work is that the energy constraint is minimum in the sense of the linear matrix inequality, but limited-budget control and guaranteed-cost control cannot realize a minimum-energy formation. Firstly, the leaderless minimum-energy formation control problem is converted into an asymptotic stability one via a nonsingular transformation and state space decomposition, and based on linear matrix inequality techniques, sufficient conditions for analysis and design of leaderless minimum-energy formation achievement are proposed, respectively, which can be solved by the generalized eigenvalue method. Then, main results of minimum-energy formation achievement of leaderless networked multiagent systems are extended leader-follower networked multiagent systems, where the asymmetric property of the leader-follower information network is well dealt with by two nonsingular transformations. Finally, two simulation examples are shown to verify the main results for minimum-energy formation achievements of leaderless and leader-follower networked multiagent systems, respectively. 相似文献
922.
《中国航空学报》2022,35(9):282-292
A guidance law parameter identification model based on Gated Recurrent Unit (GRU) neural network is established. The scenario of the model is that an incoming missile (called missile) attacks a target aircraft (called aircraft) using Proportional Navigation (PN) guidance law. The parameter identification is viewed as a regression problem in this paper rather than a classification problem, which means the assumption that the parameter is in a finite set of possible results is discarded. To increase the training speed of the neural network and obtain the nonlinear mapping relationship between kinematic information and the guidance law parameter of the incoming missile, an output processing method called Multiple-Model Mechanism (MMM) is proposed. Compared with a conventional GRU neural network, the model established in this paper can deal with data of any length through an encoding layer in front of the input layer. The effectiveness of the proposed Multiple-Model Mechanism and the performance of the guidance law parameter identification model are demonstrated using numerical simulation. 相似文献
923.