Astrodynamics最新文献_第5页

Message from the Guest Editors of the Special Issue on Precise Orbit Determination 精确轨道测定特刊特邀编辑的致辞

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-07-08 DOI: 10.1007/s42064-024-0234-4

Xiyun Hou, Jay W. McMahon

引用次数: 0

Precise orbit determination for Tianwen-1 during mapping phase 天文一号在测绘阶段的精确轨道测定

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-07-04 DOI: 10.1007/s42064-024-0226-4

Shanhong Liu, Jing Kong, Jianfeng Cao, Hao Huang, Haijun Man, Jianguo Yan, Xie Li

{"title":"Precise orbit determination for Tianwen-1 during mapping phase","authors":"Shanhong Liu, Jing Kong, Jianfeng Cao, Hao Huang, Haijun Man, Jianguo Yan, Xie Li","doi":"10.1007/s42064-024-0226-4","DOIUrl":"10.1007/s42064-024-0226-4","url":null,"abstract":"<div><p>The mapping phase is a key stage of the Tianwen-1 orbiter. It has the longest exploration time and gathers abundant radio tracking data via the Chinese deep space network. Thus, it also provides opportunities for radio science research topics such as the Mars gravity field model, ephemeris, and radio occultation experiments. At this stage, the need for imaging takes the highest priority, leading to frequent attitude adjustments for the spacecraft, which presents challenges for Precise Orbit Determination (POD). To improve the accuracy of the spacecraft’s orbit, this study analyzes the effects of arc length, the empirical acceleration, and the solar radiation pressure parameters on POD, considering the limited number of radio tracking observations. For one-day arcs, the POD is not able to adequately account for wheel off-loading and a few unknown forces with limited observations, but reasonable fitting is performed for the wheel off-loading occurring during tracking periods or the gap between two tracking periods. When extending the POD arc to three days, the estimated empirical acceleration can be well-fitted and reflects the aggregation feature, but the solar radiation pressure parameter has little impact on POD results. The root mean square of two-way range-rate residuals after POD is about 0.18–0.35 mm/s; the orbital position accuracy of 60% of the arcs is better than 100 m.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":"8 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141678516","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: 0

Initial orbit determination of some cislunar orbits based on short-arc optical observations 基于短弧光学观测的某些顺星轨道的初始轨道测定

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-06-15 DOI: 10.1007/s42064-024-0210-z

Xiyun Hou, Bosheng Li, Xin Liu, Haowen Cheng, Ming Shen, Peng Wang, Xiaosheng Xin

引用次数: 0

Message from the Guest Editors of the Special Issue on Tethered Satellite System 系留卫星系统特刊特邀编辑的致辞

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-06-13 DOI: 10.1007/s42064-024-0231-7

Rui Zhong, Ming Xu

引用次数: 0

Controlled deployment of a long tether to operate as a partial space elevator 受控部署长系绳，作为部分太空电梯运行

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-06-10 DOI: 10.1007/s42064-024-0225-5

Jinbang Huang, Arun K. Misra

引用次数: 0

Real-time hybrid method for maneuver detection and estimation of non-cooperative space targets 用于非合作空间目标机动检测和估计的实时混合方法

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-06-06 DOI: 10.1007/s42064-024-0203-y

Peng Zhang, Di Wu, Hexi Baoyin

{"title":"Real-time hybrid method for maneuver detection and estimation of non-cooperative space targets","authors":"Peng Zhang, Di Wu, Hexi Baoyin","doi":"10.1007/s42064-024-0203-y","DOIUrl":"10.1007/s42064-024-0203-y","url":null,"abstract":"<div><p>A novel hybrid scheme for the maneuver detection and estimation of a noncooperative space target was proposed in this study. The optical measurements, together with the range and range rate measurements from the ground-based radars, were used in the tracking scenarios. In many tracking scenarios, radar resources for non-cooperative targets are constrained, particularly for near-earth targets, where multiple objects can only be tracked by a single radar at a time. This limitation hinders the accurate estimation of noncooperative target maneuvers, and can at times result in target loss. Existing literature has addressed this issue to some extent through various maneuvering target-tracking methods. To address this problem, a hybrid maneuver detection and estimation method that combines the input detection and estimation extended kalman filter and the weighted nonlinear least squares method is presented. Simulation results demonstrate that the proposed method outperforms the previous method, offering more accurate and efficient estimations.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":"8 3","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141377327","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: 0

Integrated attitude—orbit control of solar sail with single-axis gimbal mechanism 带单轴万向节机构的太阳帆综合姿态轨道控制装置

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-05-24 DOI: 10.1007/s42064-023-0192-2

Toshihiro Chujo, Kei Watanabe, Yuki Takao

{"title":"Integrated attitude—orbit control of solar sail with single-axis gimbal mechanism","authors":"Toshihiro Chujo, Kei Watanabe, Yuki Takao","doi":"10.1007/s42064-023-0192-2","DOIUrl":"10.1007/s42064-023-0192-2","url":null,"abstract":"<div><p>A new attitude control method for solar sails is proposed using a single-axis gimbal mechanism and three-axis reaction wheels. The gimbal angle is varied to change the geometrical relationship between the force due to solar radiation pressure (SRP) and the center of mass of the spacecraft, such that the disturbance torque is minimized during attitude maintenance for orbit control. Attitude maneuver and maintenance are performed by the reaction wheels based on the quaternion feedback control method. Even if angular momentum accumulates on the reaction wheels due to modelling error, it can also be unloaded by using the gimbal to produce suitable torque due to SRP. In this study, we analyzed the attitude motion under the reaction wheel control by linearizing the equations of motion around the equilibrium point. Further, we newly derived the propellent-free unloading method based on the analytical formulation. Finally, we constructed the integrated attitude-orbit control method, and its validity was verified in integrated attitude-orbit control simulations.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":"8 4","pages":"483 - 506"},"PeriodicalIF":2.7,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42064-023-0192-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413433","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

Optimal orbit transfer of single-tether E-sail with inertially fixed spin axis 具有惯性固定自旋轴的单系电子帆的最佳轨道转移

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-05-13 DOI: 10.1007/s42064-023-0194-0

Alessandro A. Quarta, Marco Bassetto, Giovanni Mengali

{"title":"Optimal orbit transfer of single-tether E-sail with inertially fixed spin axis","authors":"Alessandro A. Quarta, Marco Bassetto, Giovanni Mengali","doi":"10.1007/s42064-023-0194-0","DOIUrl":"10.1007/s42064-023-0194-0","url":null,"abstract":"<div><p>This study analyzes the optimal transfer trajectory of a spacecraft propelled by a spin-stabilized electric solar wind sail (E-sail) with a single conducting tether and a spin axis with a fixed direction in an inertial (heliocentric) reference frame. The approach proposed in this study is useful for rapidly analyzing the optimal transfer trajectories of the current generation of small spacecraft designed to obtain <i>in-situ</i> evidence of the E-sail propulsion concept. In this context, starting with the recently proposed thrust model for a single-tether E-sail, this study discusses the optimal control law and performance in a typical two-dimensional interplanetary transfer by considering the (binary) state of the onboard electron emitter as the single control parameter. The resulting spacecraft heliocentric trajectory is a succession of Keplerian arcs alternated with propelled arcs, that is, the phases in which the electron emitter is switched on. In particular, numerical simulations demonstrated that a single-tether E-sail with an inertially fixed spin axis can perform a classical mission scenario as a circle-to-circle two-dimensional transfer by suitably varying a single control parameter.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":"8 2","pages":"285 - 295"},"PeriodicalIF":2.7,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42064-023-0194-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140982711","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

Dynamic analysis of tethered defunct satellites with solar panels 带太阳能电池板的系留失效卫星的动态分析

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-05-13 DOI: 10.1007/s42064-024-0206-8

Rui Qi, Yang Zhang, Heng Jiang, Rui Zhong

引用次数: 0

State-dependent trust region for successive convex programming for autonomous spacecraft 自主航天器连续凸编程的状态相关信任区域

IF 2.7 1区物理与天体物理

Astrodynamics Pub Date : 2024-04-26 DOI: 10.1007/s42064-024-0200-1

Nicolò Bernardini, Nicola Baresi, Roberto Armellin

{"title":"State-dependent trust region for successive convex programming for autonomous spacecraft","authors":"Nicolò Bernardini, Nicola Baresi, Roberto Armellin","doi":"10.1007/s42064-024-0200-1","DOIUrl":"10.1007/s42064-024-0200-1","url":null,"abstract":"<div><p>Spacecraft trajectory optimization is essential for all the different phases of a space mission, from its launch to end-of-life disposal. Due to the increase in the number of satellites and future space missions beyond our planet, increasing the level of autonomy of spacecraft is a key technical challenge. In this context, traditional trajectory optimization methods, like direct and indirect methods are not suited for autonomous or on-board operations due to the lack of guaranteed convergence or the high demand for computational power. Heuristic control laws represent an alternative in terms of computational power and convergence but they usually result in sub-optimal solutions. Successive convex programming (SCVX) enables to extend the application of convex optimization to non-linear optimal control problems. The definition of a good value of the trust region size plays a key role in the convergence of SCVX algorithms, and there is no systematic procedure to define it. This work presents an improved trust region based on the information given by the nonlinearities of the constraints which is unique for each optimization variable. In addition, differential algebra is adopted to automatize the transcription process required for SCVX algorithms. This new technique is first tested on a simple 2D problem as a benchmark of its performance and then applied to solve complex astrodynamics problems while providing a comparison with indirect, direct, and standard SCVX solutions.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":"8 4","pages":"553 - 575"},"PeriodicalIF":2.7,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42064-024-0200-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413846","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