Advances in Space Research最新文献_第3页

Star angle modified with relativistic effects/StarNAV integrated navigation method for Mars exploration 利用相对论效应修正星角/StarNAV 集成导航方法用于火星探测

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-09-04 DOI: 10.1016/j.asr.2024.08.077

Mingzhen Gui , Yifeng Wei , Hua Yang , Yuqing Yang

{"title":"Star angle modified with relativistic effects/StarNAV integrated navigation method for Mars exploration","authors":"Mingzhen Gui , Yifeng Wei , Hua Yang , Yuqing Yang","doi":"10.1016/j.asr.2024.08.077","DOIUrl":"10.1016/j.asr.2024.08.077","url":null,"abstract":"<div><div>The celestial navigation system based on star angle (SA) is a classical autonomous navigation method for the spacecraft, which directly provides the position information of the spacecraft relative to the near celestial body. But due to the relativistic effects, the star direction observed by spacecraft is inconsistent with that acquired from star ephemeris, which reduces navigation accuracy of SA. In addition, SA cannot directly provide the velocity information of the spacecraft. StarNAV is a novel celestial navigation method that utilizes the relativistic effects, which mostly provides the velocity information of the spacecraft. In this paper, the star angle modified with relativistic effects (SAMRE)/StarNAV integrated navigation method is proposed. The measurement model of SAMRE is established by considering relativistic effects in the measurement model of SA. Simulation results indicate that during the Mars approach phase, SAMRE has better navigation accuracy compared with SA, and the navigation accuracy of the SAMRE/StarNAV integrated navigation method is higher than that of SAMRE, StarNAV and SA/StarNAV, respectively. Furthermore, the paper analyses the impact of measurement errors on the navigation accuracy of SAMRE/StarNAV.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 11","pages":"Pages 5962-5972"},"PeriodicalIF":2.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphological and chronological mapping of Petavius crater, nearside of the Moon 绘制月球近侧佩塔维乌斯环形山的形态和年代图

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-09-04 DOI: 10.1016/j.asr.2024.08.074

A.V. Satyakumar , Shreekumari Patel

{"title":"Morphological and chronological mapping of Petavius crater, nearside of the Moon","authors":"A.V. Satyakumar , Shreekumari Patel","doi":"10.1016/j.asr.2024.08.074","DOIUrl":"10.1016/j.asr.2024.08.074","url":null,"abstract":"<div><div>Petavius, a complex crater from the late Imbrian epoch, features a giant central peak, numerous smaller peaks, and an inner terraced wall arising nearly 3 km above the crater floor. The region has seen periods of tectonic and volcanic activity. A meter-scale detailed mapping of LROC- Narrow Angle Camera (NAC) images was carried out to understand the tectonic features and associated volcanic history under this crater. We found many fragmented blocks, fields of striated boulders, grabens, layering near grabens and striated boulders, rock exposures, and many fractures from NAC mapping, indicating magmacreating pressure underneath the floor of a crater. The fractures identified from NAC images are probably linked with an underlying magmatic sill of high-density bodies. Crater size-frequency distribution analysis indicates that magmatic activity likely persisted for ∼2.75 Ga in the Petavius crater. It is noteworthy that this relatively recent age of volcanism has not been reported previously. The crustal thickness of the study region varies from 27 to 40 km; at the mapped tectonic features and volcanic regions, the crustal thickness of 30–34 km is found. The unique tectonic environment of the Petavius crater, in combination with the associated morphological variation and numerous exposures of mafic, suggests that the crater formed in phases associated with its structural and morphologic features and is derived from the lower crust. The morphometric analysis and previous studies support a model of magmatic intrusion and sill formation within the fractured crust beneath the crater floor; such a sill would be a likely source both for effusive mare material erupted through floor fractures into low-lying portions of the crater floor. The tectonic system on the floor of the crater was the result of post-impact processes.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 11","pages":"Pages 6124-6143"},"PeriodicalIF":2.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of temperature, pressure and specific humidity derived from Sentinel-6 with ERA5 and radiosonde 将哨兵-6 与ERA5 和无线电探测仪得出的温度、气压和湿度进行比较

IF 2.6 3区地球科学

Advances in Space Research Pub Date : 2024-09-04 DOI: 10.1016/j.asr.2024.09.003

Huizhong Zhu, Guangsheng Liu, Xiang Gao, Shuaimin Wang, Chunhua Jiang

引用次数: 0

Demonstration of feedback control regulation process for microwave discharge ion thruster in space gravitational wave detection 空间引力波探测中微波放电离子推进器反馈控制调节过程演示

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-09-04 DOI: 10.1016/j.asr.2024.08.071

Xiang Niu, Hui Liu, Bixin Zhang, Daren Yu

{"title":"Demonstration of feedback control regulation process for microwave discharge ion thruster in space gravitational wave detection","authors":"Xiang Niu, Hui Liu, Bixin Zhang, Daren Yu","doi":"10.1016/j.asr.2024.08.071","DOIUrl":"10.1016/j.asr.2024.08.071","url":null,"abstract":"<div><div>High thrust noise limits the application of microwave discharge ion thruster (MDIT) on space gravitational waves (GWs) detection, which needs to be suppressed by a feedback control system. A feedback control experimental platform is established for MDIT choosing microwave power and ion beam current respectively as controlled variable and feedback parameter. Experiments show the feedback control system adjusts screen grid (SG) current by regulating microwave power to compensate for fluctuations of acceleration grid (AG) current, which is mainly because the ability of microwave power to adjust SG current is dramatically stronger than that to adjust AG current. Faced with fluctuations of decreasing flow rate, the feedback control system boosts microwave power to stabilize ion beam current. However, the AG current shows diametrically opposed characteristics for operations with different interception rates under regulation of a feedback control system. Further study shows this phenomenon is the macroscopic reflection of ion trajectories variations on AG current under the function of specific electric field when feedback control system changes the proportions of primary ions and charge exchange (CEX) ions by influencing CEX reaction intensity in the grid system and its downstream region. Analysis of mean free path shows the CEX reaction intensity in the grid system is stronger than that downstream from AG. Therefore, the physical process in the grid system dominates variations of AG current.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 11","pages":"Pages 5950-5961"},"PeriodicalIF":2.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fuel-optimal acquisition and control of a cartwheel formation in Earth displaced heliocentric orbit 地球位移日心轨道上车轮编队的燃料优化获取与控制

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-09-03 DOI: 10.1016/j.asr.2024.08.073

Stefano Marmori, Alessandro Morselli

{"title":"Fuel-optimal acquisition and control of a cartwheel formation in Earth displaced heliocentric orbit","authors":"Stefano Marmori, Alessandro Morselli","doi":"10.1016/j.asr.2024.08.073","DOIUrl":"10.1016/j.asr.2024.08.073","url":null,"abstract":"<div><div>An optimization approach for cartwheel formation acquisition and maintenance in an Earth Displaced heliocentric orbit is presented. This work considers non-gravitational perturbations such as solar radiation pressure, thus extending the studies previously performed for the mission LISA. The problem is tackled as a Nonlinear Programming problem using a multiple shooting method. The optimization process is performed in two steps: first, the orbital elements of each satellite in heliocentric orbit are optimized to guarantee the stability during the science phase hence easing maintenance of the cartwheel formation in presence of orbital perturbations. Then, the obtained initial states are propagated to obtain a set of target orbital states which become the final target of a second optimization covering the transfer phase from Earth. For the science phase optimization presents two alternative cost functions are introduced, one based on the arm-length evolution and one on the arm-length-rate evolution. The performance of each cost function is analysed for different initial displacement angles: for target arm-lengths below 2.5 million kilometers the arm-length cost function provides the best results while no significant difference between the two optimized solutions is observed above this value. The transfer phase optimization presents two different approaches, one considering an injection on a trajectory more favourable for one of the three spacecraft and one considering an injection on an intermediate trajectory which minimizes the overall acquisition cost of all spacecraft. The proposed optimization approach performance are studied on a set of test cases covering both transfer and science phase, showing that stable configuration conditions can be found even in presence of orbital perturbations and that the multiple injection transfer is capable of providing a more homogeneous fuel consumption among the three spacecraft.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 10","pages":"Pages 4948-4967"},"PeriodicalIF":2.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analytic optimal control for multi-satellite assembly using linearized twistor-based model 利用基于线性化扭因子模型的多卫星组装分析优化控制

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-09-02 DOI: 10.1016/j.asr.2024.08.072

Mohammed Atallah , Mohamed Okasha , Ossama Abdelkhalik

{"title":"Analytic optimal control for multi-satellite assembly using linearized twistor-based model","authors":"Mohammed Atallah , Mohamed Okasha , Ossama Abdelkhalik","doi":"10.1016/j.asr.2024.08.072","DOIUrl":"10.1016/j.asr.2024.08.072","url":null,"abstract":"<div><div>This paper presents Guidance and Control (G&C) systems for multi-satellite assembly in proximity operations. The systems utilize the twistor model, which is linearized through Taylor’s series. Decentralized control laws, designed using Linear Quadratic Regulator (LQR) and Model Predictive Control (MPC), are employed to track an energy-optimal trajectory generated using the Hamiltonian approach. Data exchange between satellites and their neighbors is represented using graph theory. The decentralized MPC framework is implemented using the CasADi package. To ensure collision avoidance between the satellites, a repulsive control law is designed, considering symmetric input saturation in the actuators. The proposed G&C systems are tested using a high-fidelity nonlinear satellite relative motion model that incorporates orbital perturbations. Numerical simulations are performed in a MATLAB® environment, and the results are visualized using STK®. Furthermore, a comparative study is conducted to evaluate tracking performance and fuel consumption between the two control methods. The results demonstrate that the use of an optimal trajectory reduces fuel consumption for both control algorithms.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 10","pages":"Pages 5142-5155"},"PeriodicalIF":2.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preface: Progress in cosmic-ray astrophysics and related areas 前言宇宙射线天体物理学及相关领域的进展

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-09-02 DOI: 10.1016/j.asr.2024.09.002

Igor V. Moskalenko (Guest Editor), Eun-Suk Seo (Guest Editor)

引用次数: 0

Proposing novel body-centered cubic lattice core sandwich panels as satellite structure 提出新型体心立方晶格核心夹层板作为卫星结构

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-09-02 DOI: 10.1016/j.asr.2024.08.064

Farshid Kamareh, Baojun Pang, Wuxiong Cao, Runqiang Chi, Diqi Hu

{"title":"Proposing novel body-centered cubic lattice core sandwich panels as satellite structure","authors":"Farshid Kamareh, Baojun Pang, Wuxiong Cao, Runqiang Chi, Diqi Hu","doi":"10.1016/j.asr.2024.08.064","DOIUrl":"10.1016/j.asr.2024.08.064","url":null,"abstract":"<div><div>In the present paper, a comparative study on the load-bearing as well as shielding performance against hypervelocity impact of space debris of sandwich panels with body-centered cubic lattice core is performed numerically in order to evaluate their eligibility to be utilized as the satellite structure. To this end, four types of body-centered cubic lattice structures, with similar areal densities which are assumed to be made of 5A06 aluminum alloy, including BCC, BCCz (BCC reinforced in Z direction), and also BCCz-I and BCCz-II were considered. Whipple shield structure of same material and areal density was also investigated in order to justify the necessity of lattice structures application, especially in protection field. The present study simulates hypervelocity impact of a spherical projectile with 2 mm diameter, represented the space debris, collides with the structures at the velocity range of 2–6 km/s. Current numerical simulation process accuracy and efficiency were verified through comparing its obtained data based on simulating a problem had been investigated at a valid experimental study to the data proposed by the mentioned research. BCCz-II structure which is newly proposed at this study provided outstanding shielding and load-bearing capabilities in comparison to other structures. Furthermore, the detailed effects of projectile impact location and a middle structure placed plate on the protection performance were investigated and the mentioned items were found to have crucial impact on the structure shielding performance.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 11","pages":"Pages 5779-5802"},"PeriodicalIF":2.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics and control for spacecraft tracking a displaced orbit around an asteroid exploiting solar sail 利用太阳帆跟踪绕小行星移位轨道的航天器的动力学与控制

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-08-31 DOI: 10.1016/j.asr.2024.08.068

Xinbo Gu, Kohei Yamaguchi, Takaya Inamori, Ji hyun Park

{"title":"Dynamics and control for spacecraft tracking a displaced orbit around an asteroid exploiting solar sail","authors":"Xinbo Gu, Kohei Yamaguchi, Takaya Inamori, Ji hyun Park","doi":"10.1016/j.asr.2024.08.068","DOIUrl":"10.1016/j.asr.2024.08.068","url":null,"abstract":"<div><div>This study investigates the displaced orbit around a near-Earth asteroid for spacecraft achieved via a realistic solar sail with a performance based on the existing technology in a low distance. Using the realistic solar sail to achieve the displaced orbit with a short displaced distance is more difficult compared with using a traditional thruster under two main limitations: The force limitation and the position limitation. Firstly, the solar radiation pressure (SRP) force generated by the solar sail is limited by the solar sail’s property and the sunlight direction. Therefore, the feasibility of maintaining a displaced orbit at an equilibrium point around the asteroid at a low distance using a solar sail with realistic performance is investigated analytically. The results demonstrate that the equilibrium point of the displaced orbit can be achieved. Secondly, the usage of the solar sail is also limited by the position of the spacecraft. The SRP force cannot be generated in the eclipse region wherein sunlight is absent; specifically, in a displaced orbit with a low displaced distance, the position limitation is more notable. To address this challenge, spacecraft dynamics and control using a solar sail are investigated to achieve the displaced orbit, and a method of orbit transfer outside the eclipse region is proposed. Numerical simulations reveal that the spacecraft can maintain the displaced orbit using the solar sail without entering the eclipse region. Moreover, spacecraft can achieve orbit transfer between two equilibrium points without entering the eclipse region by using the solar sail. The impact of non-spherical shape of the primary asteroid is also investigated. Results show that the proposed method can maintain a displaced orbit with errors from the reference state less than 10 % during a limited time span when the primary asteroid has a non-spherical shape.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 11","pages":"Pages 5803-5818"},"PeriodicalIF":2.8,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Utilizing multitemporal indices and spectral bands of Sentinel-2 to enhance land use and land cover classification with random forest and support vector machine 利用哨兵-2 的多时指数和光谱波段，以随机森林和支持向量机加强土地利用和土地覆被分类

IF 2.8 3区地球科学

Advances in Space Research Pub Date : 2024-08-30 DOI: 10.1016/j.asr.2024.08.062

Atefe Arfa , Masoud Minaei

{"title":"Utilizing multitemporal indices and spectral bands of Sentinel-2 to enhance land use and land cover classification with random forest and support vector machine","authors":"Atefe Arfa , Masoud Minaei","doi":"10.1016/j.asr.2024.08.062","DOIUrl":"10.1016/j.asr.2024.08.062","url":null,"abstract":"<div><div>Multitemporal imagery offers a critical advantage by capturing seasonal variations, which are essential for differentiating between land use and land cover (LULC) types. While these types may appear similar when examined at one specific time, they exhibit distinct phenological patterns across different seasons. This temporal depth is crucial for enhancing model accuracy, particularly in heterogeneous landscapes where LULC transitions are frequent and complex. This paper made use of spectral bands and indices of Sentinel-2 from April to September 2020 for LULC classification using two advanced machine learning models: Random forest (RF) and support vector machine (SVM). The spectral indices include the normalized difference vegetation index (NDVI), normalized difference built-up index (NDBI), and modified normalized water index (MNDWI). The dataset was divided into four temporal feature sets: April-May, June-July, August-September, and the entire period from April-September. For each two-month period, the median values of the spectral bands and indices were used. Both models were evaluated based on overall accuracy, F1-score, Kappa coefficient, precision, and recall. Results indicate that incorporating multitemporal features enhanced the performance of the chosen models, with overall accuracy increasing from 82.4% to 94.03% for RF and from 75.4% to 93.54% for SVM. Additionally, the RF algorithm demonstrated higher accuracy than the SVM model across various time periods, with notable improvements in other performance metrics. These improvements also underscore the ability of the models to leverage the rich multitemporal data provided by Sentinel-2 for accurate LULC classification. This study highlights the importance of incorporating the dynamics of features in remote sensing applications to enhance the precision and reliability of LULC classification.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"74 11","pages":"Pages 5580-5590"},"PeriodicalIF":2.8,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0