Astrodynamics最新文献_第8页

Astrometric calibration and source characterisation of the latest generation neuromorphic event-based cameras for space imaging 用于空间成像的最新一代基于神经形态事件的相机的天体测量校准和源特性

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-11-17 DOI: 10.1007/s42064-023-0168-2

N. Ralph, Alexandre Marcireau, Saeed Afshar, N. Tothill, André van Schaik, Gregory Cohen

引用次数: 3

Message from the Guest Editors of the Special Issue on Asteroid Exploration 《小行星探索》特刊特邀编辑寄语

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-11-05 DOI: 10.1007/s42064-022-0155-z

Dong Qiao, Jiangchuan Huang, Xiangyu Li

引用次数: 0

On-board modeling of gravity fields of elongated asteroids using Hopfield neural networks 利用Hopfield神经网络对细长小行星的重力场进行星载建模

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-11-05 DOI: 10.1007/s42064-022-0151-3

Yingjie Zhao, Hongwei Yang, Shuang Li, Yirong Zhou

{"title":"On-board modeling of gravity fields of elongated asteroids using Hopfield neural networks","authors":"Yingjie Zhao, Hongwei Yang, Shuang Li, Yirong Zhou","doi":"10.1007/s42064-022-0151-3","DOIUrl":"10.1007/s42064-022-0151-3","url":null,"abstract":"<div><p>To rapidly model the gravity field near elongated asteroids, an intelligent inversion method using Hopfield neural networks (HNNs) is proposed to estimate on-orbit simplified model parameters. First, based on a rotating mass dipole model, the gravitational field of asteroids is characterized using a few parameters. To solve all the parameters of this simplified model, a stepped parameter estimation model is constructed based on different gravity field models. Second, to overcome linearization difficulties caused by the coupling of the parameters to be estimated and the system state, a dynamic parameter linearization technique is proposed such that all terms except the parameter terms are known or available. Moreover, the Lyapunov function of the HNNs is matched to the problem of minimizing parameter estimation errors. Equilibrium values of the Lyapunov function are used as estimated values. The proposed method is applied to natural elongated asteroids 216 Kleopatra, 951 Gaspra, and 433 Eros. Simulation results indicate that this method can estimate the simplified model parameters rapidly, and that the estimated simplified model provides a good approximation of the gravity field of elongated asteroids.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2022-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42064-022-0151-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50010022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Design and guidance of a multi-active debris removal mission 多主动碎片清除任务的设计与指导

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-10-21 DOI: 10.1007/s42064-023-0159-3

M. Wijayatunga, R. Armellin, Harry Holt, L. Pirovano, A. Lidtke

引用次数: 3

Stretching directions in cislunar space: Applications for departures and transfer design 顺月空间的拉伸方向:出发与换乘设计的应用

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-09-29 DOI: 10.1007/s42064-022-0147-z

Vivek Muralidharan, Kathleen C. Howell

{"title":"Stretching directions in cislunar space: Applications for departures and transfer design","authors":"Vivek Muralidharan, Kathleen C. Howell","doi":"10.1007/s42064-022-0147-z","DOIUrl":"10.1007/s42064-022-0147-z","url":null,"abstract":"<div><p>Stable or nearly stable orbits do not generally possess well-distinguished manifold structures that assist in designing trajectories for departing from or arriving onto a periodic orbit. For some potential missions, the orbits of interest are selected as nearly stable to reduce the possibility of rapid departure. However, the linearly stable nature of these orbits is also a drawback for their timely insertion into or departure from the orbit. Stable or nearly stable near rectilinear halo orbits (NRHOs), distant retrograde orbits (DROs), and lunar orbits offer potential long-horizon trajectories for exploration missions and demand efficient operations. The current investigation focuses on leveraging stretching directions as a tool for departure and trajectory design applications. The magnitude of the state variations along the maximum stretching direction is expected to grow rapidly and, therefore, offers information for efficient departure from the orbit. Similarly, maximum stretching in reverse time enables arrival with a minimal maneuver magnitude.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50053926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Probe lifetime around natural satellites with obliquity 探测器在有倾角的天然卫星周围的寿命

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-08-15 DOI: 10.1007/s42064-022-0145-1

Marco Cinelli, Hanlun Lei, Emiliano Ortore, Christian Circi

引用次数: 3

Robust template feature matching method using motion-constrained DCF designed for visual navigation in asteroid landing 基于运动约束的DCF鲁棒模板特征匹配方法设计用于小行星着陆视觉导航

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-08-03 DOI: 10.1007/s42064-022-0146-0

Yaqiong Wang, Xiongfeng Yan, Zhen Ye, Huan Xie, Shijie Liu, Xiong Xu, Xiaohua Tong

{"title":"Robust template feature matching method using motion-constrained DCF designed for visual navigation in asteroid landing","authors":"Yaqiong Wang, Xiongfeng Yan, Zhen Ye, Huan Xie, Shijie Liu, Xiong Xu, Xiaohua Tong","doi":"10.1007/s42064-022-0146-0","DOIUrl":"10.1007/s42064-022-0146-0","url":null,"abstract":"<div><p>A robust and efficient feature matching method is necessary for visual navigation in asteroid-landing missions. Based on the visual navigation framework and motion characteristics of asteroids, a robust and efficient template feature matching method is proposed to adapt to feature distortion and scale change cases for visual navigation of asteroids. The proposed method is primarily based on a motion-constrained discriminative correlation filter (DCF). The prior information provided by the motion constraints between sequence images is used to provide a predicted search region for template feature matching. Additionally, some specific template feature samples are generated using the motion constraints for correlation filter learning, which is beneficial for training a scale and feature distortion adaptive correlation filter for accurate feature matching. Moreover, average peak-to-correlation energy (APCE) and jointly consistent measurements (JCMs) were used to eliminate false matching. Images captured by the Touch And Go Camera System (TAGCAMS) of the Bennu asteroid were used to evaluate the performance of the proposed method. In particular, both the robustness and accuracy of region matching and template center matching are evaluated. The qualitative and quantitative results illustrate the advancement of the proposed method in adapting to feature distortions and large-scale changes during spacecraft landing.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2022-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42064-022-0146-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50009362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Message from the Guest Editors of the Special Issue in Memory of Professor Shijie Xu 纪念许世杰教授特刊特邀编辑寄语

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-07-14 DOI: 10.1007/s42064-022-0141-5

Ming Xu, Yue Wang

引用次数: 0

A review of dynamic analysis on space solar power station 空间太阳能电站动态分析研究进展

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-07-13 DOI: 10.1007/s42064-022-0144-2

Weipeng Hu, Zichen Deng

{"title":"A review of dynamic analysis on space solar power station","authors":"Weipeng Hu, Zichen Deng","doi":"10.1007/s42064-022-0144-2","DOIUrl":"10.1007/s42064-022-0144-2","url":null,"abstract":"<div><p>The concept of a space solar power station (SSPS) was proposed in 1968 as a potential approach for solving the energy crisis. In the past 50 years, several structural concepts have been proposed, but none have been sent into orbit. One of the main challenges of the SSPS is dynamic behavior prediction, which can supply the necessary information for control strategy design. The ultra-large size of the SSPS causes difficulties in its dynamic analysis, such as the ultra-low vibration frequency and large flexibility. In this paper, four approaches for the numerical analysis of the dynamic problems associated with the SSPS are reviewed: the finite element, absolute nodal coordinate, floating frame formulation, and structure-preserving methods. Both the merits and shortcomings of the above four approaches are introduced when they are employed in dynamic problems associated with the SSPS. Synthesizing the merits of the aforementioned four approaches, we believe that embedding the structure-preserving method into finite element software may be an effective way to perform a numerical analysis of the dynamic problems associated with the SSPS.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":null,"pages":null},"PeriodicalIF":6.1,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50023098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Review of attitude consensus of multiple spacecraft 多航天器姿态一致性研究综述

IF 6.1 1区物理与天体物理

Astrodynamics Pub Date : 2022-07-09 DOI: 10.1007/s42064-022-0142-4

Ti Chen, Jinjun Shan, Hao Wen, Shidong Xu

引用次数: 4