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  1. No Access

    Chapter

    Simple Electroaerodynamic Aircraft Testing with Multistage Staggered Arrangement of the Electrodes

    Electroaerodynamic (EAD) devices use corona-induced ionic winds for in-atmosphere propulsion, from which EAD aircraft are derived with the advantages of low mechanical fatigue, low noise and zero carbon emissi...

    Yulong Ying, Zewei **a, Tong Lin in Advances and Challenges in Advanced Unmann… (2024)

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    Chapter

    Rapid Trajectory Optimization of Continuous-Low-Thrust Spacecraft Based on Bezier Shape Function and Inverse Dynamics

    Deep space exploration missions are a great fit for continuous-thrust spacecraft because of their benefits of high specific impulse and extended operating period. However, when it comes to tackling the traject...

    Tianchen Wang, **aoyu Shang, Jianfeng Wang in Advances and Challenges in Advanced Unmann… (2024)

  3. Article

    Open Access

    Spacecraft Pose Estimation Based on Different Camera Models

    Spacecraft pose estimation is an important technology to maintain or change the spacecraft orientation in space. For spacecraft pose estimation, when two spacecraft are relatively distant, the depth informatio...

    Lidong Mo, Naiming Qi, Zhenqing Zhao in Chinese Journal of Mechanical Engineering (2023)

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    Chapter and Conference Paper

    Safety Control of Quadrotor by Control Barrier Function Based-on Data-Driven Hamilton Dynamics Model

    The accurate trajectory tracking and obstacle avoidance task of quadrotor is a difficult problem, because its dynamics is difficult to accurately establish, resulting in complex controller design. In order to ...

    Xu Wang, Yituo Song, Haoxuan Wei in Proceedings of 2022 International Conferen… (2023)

  5. No Access

    Chapter and Conference Paper

    Linear Gaussian Processes for Data-Efficient Robot Dynamics Learning

    This paper proposes a linear Gaussian Process learning framework which can be used in the both of semi-parametric and non-parametric models. Inspired by the linear relationship in Euler–Lagrange equation, this...

    Desong Du, Changhao Liu, Chenrui Ni in Advances in Guidance, Navigation and Contr… (2022)

  6. No Access

    Chapter and Conference Paper

    Pose Estimation Algorithm for Helicopter Landing Based on YOLO and PNP

    Pose estimation measured by the camera is increasingly used in helicopter landing. We present a pose estimation algorithm for autonomous landing. You Only Look Once (YOLO) algorithm is extended to estimate the...

    Rui Zhou, Jiayu She, Naiming Qi, Long Yu in Advances in Guidance, Navigation and Contr… (2022)

  7. No Access

    Article

    Effect of Oil Viscosity on Hydraulic Cavitation Luminescence

    The collapse of cavitation bubbles in a hydraulic system generates localized zones of high temperature and pressure and, under certain conditions, luminescence. In this study, we studied the influence of the h...

    Jian Zhang, Naiming Qi, Jihai Jiang in Fluid Dynamics (2021)

  8. No Access

    Article

    Coupled attitude-vibration analysis of an E-sail using absolute nodal coordinate formulation

    In this study, the effects of solar wind on an electric sail (E-sail) are modeled and analyzed using an absolute nodal coordinate formulation (ANCF). First, the thrust of the charged metal tether that makes up...

    Ce Zhao, Mingying Huo, Ji Qi, Shilei Cao, Dongfang Zhu, Lujun Sun in Astrodynamics (2020)

  9. No Access

    Chapter and Conference Paper

    Density Based Cluster Extension and Dominant Sets Clustering

    With the pairwise data similarity matrix as input, dominant sets clustering has been shown to be a promising clustering approach with some nice properties. However, its clustering results are found to be influ...

    Jian Hou, Chunshi Sha, Xu E, Qi **a in Graph-Based Representations in Pattern Rec… (2015)

  10. No Access

    Article

    Capture condition for endo-atmospheric interceptors steered by ALCS and ARCS

    This contribution deals with capture condition for interceptor missiles steered by aero-lift control system (ALCS) and attitude reaction-jet control system (ARCS). With the guidance law derived from bounded di...

    Yanfang Liu, Naiming Qi, Tianye Wang in Control Theory and Technology (2014)

  11. No Access

    Article

    Effects of Divert-Thrusters on Homing Performance of Endo-atmospheric Interceptors

    A new guidance law is proposed for interceptor missiles by using a differential game formulation with bounded controls. The interceptor is steered by the aerodynamic-lift control system and the divert-thruster...

    Yanfang Liu, Naiming Qi, Zhiwei Tang in Journal of Optimization Theory and Applications (2013)

  12. No Access

    Article

    Neural integrated control for a free-floating space robot with suddenly changing parameters

    Because the state of a free-floating space robot model is uncertain and sudden changes in the model parameters might undermine the stability of the system, this paper proposes a control strategy based on a var...

    WenHui Zhang, NaiMing Qi, **g Ma, AYang **ao in Science China Information Sciences (2011)

  13. No Access

    Chapter and Conference Paper

    On Vocabulary Size in Bag-of-Visual-Words Representation

    Bag-of-visual-words is a popular image representation that produces high matching accuracy and efficiency. While vocabulary size impacts on matching accuracy, existing research usually selects the vocabulary s...

    Jian Hou, Jianxin Kang, Naiming Qi in Advances in Multimedia Information Process… (2010)

  14. No Access

    Chapter and Conference Paper

    Image Matching Based on Representative Local Descriptors

    While straightforward image matching with keypoint based local descriptors produces a high matching accuracy, it is usually accompanied by enormous computation load. In this paper we present a representative l...

    Jian Hou, Naiming Qi, Jianxin Kang in Advances in Multimedia Modeling (2010)