Advances in Space Research最新文献

{"title":"Efficient area coverage planning using approximation tiling heuristics for mosaic imaging with agile spacecraft","authors":"Paula Betriu ,&nbsp;Manel Soria ,&nbsp;Jordi L. Gutiérrez ,&nbsp;Diego Andía ,&nbsp;Marcel Llopis","doi":"10.1016/j.asr.2024.12.024","DOIUrl":"10.1016/j.asr.2024.12.024","url":null,"abstract":"<div><div>This work focuses on the Area Coverage Planning Problem (ACPP) for optical cameras onboard agile spacecraft in space exploration missions. The objective is to determine the optimal observation path of the camera’s boresight to obtain a mosaic that fully covers a designated Region Of Interest (ROI) on the target’s surface, while considering activity makespan and computational demand. To tackle this problem, four improved heuristics are implemented, each addressing differently the need to create an acquisition plan that dynamically adjusts to the camera’s observation geometry over time. Based on the proposal from a previous study, these heuristics have been further refined to correct spatial distortion and improve computational efficiency. In consequence, the current implementation allows for application to non-convex, irregularly shaped celestial bodies. We have developed a comprehensive program framework with supporting functions and assets to enable the iterative execution of the applied heuristics under diverse observation geometries along the spacecraft’s trajectory, ensuring their robustness and adaptability.</div><div>The ACPP is a component of a broader scheduling problem for agile spacecraft, which aims to maximize the scientific return while adhering to geometric and operational constraints imposed by both the spacecraft and its payload. In this context, deterministic step-stare algorithms are preferred for their efficiency in balancing accuracy and computational resources.</div><div>The algorithms are showcased through the simulation of observations from Galileo during one of its flybies over Europa. Arbitrary and diverse ROIs are considered on the target’s surface, allowing for a comprehensive evaluation of the algorithms in different observation geometries. The outcomes are analyzed over coverage completeness, efficient planning and computational burden. Thus, the resulting mosaics provide insights into the optimal usage of the heuristics in specific circumstances.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 4013-4034"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402758","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}

{"title":"A robust GNSS velocity estimation method combining Doppler and carrier phase observations in complex urban environments","authors":"Yantao Liang ,&nbsp;Xiaohong Zhang ,&nbsp;Ying Liu ,&nbsp;Xianlu Tao ,&nbsp;Wanke Liu ,&nbsp;Hailu Jia ,&nbsp;Hongxia Bai","doi":"10.1016/j.asr.2024.11.071","DOIUrl":"10.1016/j.asr.2024.11.071","url":null,"abstract":"<div><div>Accurate and reliable velocity information is crucial for kinematic positioning, as it not only characterizes the carrier state but also serves as constraint information for positioning. However, due to the influence of low-cost Global Navigation Satellite System (GNSS) chips and complex environments, GNSS signals are prone to attenuation and interruptions. Consequently, frequent gross errors and cycle slips occur in observations, significantly degrading the velocity precision and reliability. To address this challenge, we have proposed a method combining Doppler and Time-Differenced Carrier Phase Velocity Estimation (D-TDCPVE). First, we assess the accuracy of both Doppler and carrier phase observations to determine the appropriate weight ratio for their combination. Second, we analyze the correlation between the two observation types and propose an adaptive parameter estimation strategy for estimating one or two clock bias variations to address their potential differences. Finally, we incorporate a combination of pre- and post-detection quality control measures along with additional cycle slip parameters to mitigate the impact of gross errors and cycle slips in complex environments. Experimental results conducted with three low-cost devices in urban environments demonstrate the superior performance of the D-TDCPVE method over both Doppler velocity estimation (DVE) and time-differenced carrier phase velocity estimation (TDCPVE). It enhances the success rate of velocity estimation by 3.3% to 20.1% compared to TDCPVE and improves velocity estimation accuracy by 16.1% to 60.9% compared to DVE. Moreover, the method does not necessitate the combination of dual-frequency observations, making it particularly valuable for cycle slip detection in scenarios involving mixed single- and dual-frequency observations, which is particularly useful in urban environments.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3838-3855"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402865","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}

{"title":"DAI algorithm: A QGIS plugin for daily aerial image interpolation","authors":"Tobías Romero-Macías ,&nbsp;C. Amurrio-García ,&nbsp;José L. Jiménez-García ,&nbsp;Pablo Blanco-Gómez","doi":"10.1016/j.asr.2024.11.081","DOIUrl":"10.1016/j.asr.2024.11.081","url":null,"abstract":"<div><div>This article describes the Daily Aerial Image (DAI) algorithm, a QGIS plugin implemented in Python for satellite image interpolation. The presence of clouds and the time difference between two satellite images make it difficult to observe the Earth’s surface with remote sensors. To solve this problem, the spatial and temporal combination of two observed clean images may be of particular interest to GIS users and satellite image scientists. The DAI package uses tri-band raster images from two different dates to interpolate the intermediate images on a daily basis.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3335-3339"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403037","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}

{"title":"A lightweight prediction model for global ionospheric total electron content based on attention-BiLSTM","authors":"Chao Han ,&nbsp;Yaping Guo ,&nbsp;Ming Ou ,&nbsp;Dandan Wang ,&nbsp;Chenglong Song ,&nbsp;Ruimin Jin ,&nbsp;Weimin Zhen ,&nbsp;Peirui Bai ,&nbsp;Xiaorui Chong ,&nbsp;Xiaoni Wang","doi":"10.1016/j.asr.2024.11.066","DOIUrl":"10.1016/j.asr.2024.11.066","url":null,"abstract":"<div><div>The ionospheric total electron content (TEC) is a critical parameter for space weather and Global Navigation Satellite System (GNSS) applications. A Bidirectional Long Short-Term Memory neural network model with an added attention mechanism (BiLSTM-Attention) was developed in this study to predict 256 spherical harmonic coefficients (SHC). Input data for the forecasting model includes F10.7, Dst, and other feature parameters, along with a lightweight historical time series of SHC from the past day. The model output is the next day’s SHC. Then, we compare the results of SHC with those of the 1-day Center for Orbit Determination in Europe (CODE) prediction model. The correlation coefficient form model TEC with respect to the CODE TEC are 0.93 and 0.96 in 2018 and 2022, respectively, while the correlation coefficient of the 1-day CODE prediction model are 0.91 and 0.94. The results illustrate established model both in high and low solar activity years, and exhibiting enhanced robustness during geomagnetic storms. Furthermore, typical ionospheric structures such as Equatorial Ionization Anomaly (EIA) is well reproduced in the TEC prediction maps. Compared to C1PG, the proposed model offers a lighter computational load while maintaining competitive performance in global TEC prediction.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3614-3629"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143403145","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}

{"title":"Review of deployment controllers for space tethered system","authors":"Aaron Aw Teik Hong ,&nbsp;Renuganth Varatharajoo ,&nbsp;Yew-Chung Chak","doi":"10.1016/j.asr.2024.11.061","DOIUrl":"10.1016/j.asr.2024.11.061","url":null,"abstract":"<div><div>This review article investigates the performance of newly designed controllers for Tethered Space Systems (TSS) deployment, comparing them to past and current research. Specifically, the study delves into the PD type controller, known for its simplicity and early development. While PD controllers adequately manage non-coplanar scenarios with external perturbations, they are limited to linearized cases. In contrast, advanced controllers like Sliding Mode Control (SMC) effectively handle TSS’s highly nonlinear dynamics due to their robust nature. The study introduces a sigma function, derived from Djebli’s literature, to regulate tether deployment rate and length across all controllers. Simulation results demonstrate the feasibility of controlling out-of-plane libration angles solely through the tether tension. Among the controllers tested, the advanced sigma-SMC exhibits superior accuracy during deployment, while the modified SMC deploys the tether fastest albeit with significant steady-state errors and deflection angles. Numerical results show that the original SMC controller performs well as the most fuel-efficient option. This comparison focuses solely on tether deployment with J2 and gravity-gradient perturbations, offering a foundation for further exploration into TSS missions, including factors like aerodynamic drag, solar radiation, third body perturbations, tether flexibility, and retrieval phase control, tailored to specific mission requirements.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3933-3949"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402753","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}

{"title":"Maximization of fundamental frequency for small satellite components layout design","authors":"Wei Cong,&nbsp;Bingxiao Du,&nbsp;Yong Zhao","doi":"10.1016/j.asr.2024.11.079","DOIUrl":"10.1016/j.asr.2024.11.079","url":null,"abstract":"<div><div>This paper proposes a bi-objective optimization method for the small satellite components layout optimization design, considering mass characteristics and fundamental frequency characteristics. Firstly, <span><math><mrow><mi>φ</mi></mrow></math></span> function is used to describe the geometry and position relationships between components, effectively addressing the non-overlap constraints among them. Then, the finite element method is used to calculate the stiffness and mass of the satellite load-bearing board to determine the fundamental frequency of the satellite. In addition, the paper designs a novel bi-objective optimization algorithm combined Diverse Gradient Optimization (DGO) algorithm with the Smart Normal Constraint (SNC) method, which simplifies the complex gradient calculation through semi-analytical sensitivity analysis. Finally, numerical examples validate the applicability and rationality of the proposed optimization method in solving bi-objective satellite components layout problems. The results show that the method can provide effective solutions for the layout design of small satellite components while considering both mass characteristics and fundamental frequency characteristics optimization.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3967-3981"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402755","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}

{"title":"Doppler velocity estimation based on the random sample consensus considering a prior dynamic model","authors":"Jing Guo,&nbsp;Ziyu Fan,&nbsp;Zhen Li,&nbsp;Qile Zhao","doi":"10.1016/j.asr.2024.12.027","DOIUrl":"10.1016/j.asr.2024.12.027","url":null,"abstract":"<div><div>Typically, centimeters per second (cm/s) accuracy can be achieved for velocity estimation based on time-differenced positioning, Doppler velocity, and the time-differenced carrier phase approach in open air conditions. However, velocity estimation performance can deteriorate due to non-line-of-sight (NLOS) signals, multipath effects, and other sources of interference in urban areas. We discuss a velocity estimation method based on the RANdom SAmple Consensus (RANSAC) algorithm and a prior dynamic model is proposed. RANSAC is used to isolate the observations affected by NLOS or multipath, while a prior dynamic model is implemented to provide proper velocity constraint. Vehicle kinematic experiments conducted in both open and complex urban environments demonstrate that the velocity accuracy in all three directions can be improved by over 40 % and centimeter-level velocity accuracy can be obtained in open areas. Moreover, the accuracy can be improved by 78.5 %, 78.5 %, and 68.4 % in the north, east, and up directions compared to that obtained by traditional single-point Doppler velocity, and 10.5 cm/s, 11.0 cm/s, and 14.3 cm/s accuracies are achieved in complex urban areas. Moreover, this method is also reasonably applicable to low-cost receivers.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3471-3485"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402847","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}

{"title":"Investigating the effects of different data classification methods on landslide susceptibility mapping","authors":"Halil Akinci,&nbsp;Ayse Yavuz Ozalp","doi":"10.1016/j.asr.2024.12.020","DOIUrl":"10.1016/j.asr.2024.12.020","url":null,"abstract":"<div><div>In this study, landslide susceptibility maps (LSMs) were produced for three regions where landslides are common in the Eastern Black Sea Region of Türkiye. The regions studied include the districts of Trabzon, Rize and Artvin. The eXtreme Gradient Boosting (XGBoost) machine learning algorithm was used to generate the LSMs. Ten different factors that can affect landslides including lithology, land cover, topographic wetness index (TWI), plan and profile curvature, slope, elevation, aspect, distance to roads and drainages were used for the research. The study tested various spatial data classification methods for these factors. Specifically, the data was categorized using five distinct classification methods: “geometric interval,” “equal interval,” “manual interval,” “natural breaks,” and “quantile.” The main objective of the study was to see how these classification methods affect the accuracy of LSMs. For this purpose, six different models using the XGBoost algorithm were created. In the first model, continuous data was used for most of the factors, while some factors (aspect, land cover and lithology) were used as discrete data. The other five models categorized the data using the different classification methods mentioned above. The receiver operating characteristic (ROC) curve and area under the curve (AUC) approach were used to measure how well each model performed. The results showed that the Model_1 using mostly continuous data performed the best among all three study areas with the highest AUC value. The model with the lowest AUC value was the model using the equal interval classification method (Model_3). The most important finding gained from this study was that when producing LSMs, it is preferable to maintain continuous data as is rather than reclassifying it, as this improves the accuracy of the susceptibility model.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3427-3450"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402859","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}

{"title":"Feasibility of orbital capture of near-earth asteroids based on the planar-circular restricted three-body problem","authors":"Yamaguchi Kohei ,&nbsp;Gu Xinbo ,&nbsp;Inamori Takaya ,&nbsp;Park Ji-Hyun ,&nbsp;Taguchi Masaya","doi":"10.1016/j.asr.2024.11.030","DOIUrl":"10.1016/j.asr.2024.11.030","url":null,"abstract":"<div><div>With the goal of efficiently extracting samples or even materials from the surface of an asteroid, this study proposed and investigated a method to change the velocity vector of a near-Earth asteroid and place it into an orbit where it is captured by the Earth’s gravitational field. The change in the orbit of an asteroid is not directly discussed in relation to the change in the velocity vector but is indirectly considered by the change in the Jacobi integral, which is the first integral of the circular-planar restricted three-body problem. In addition, the distribution of the smaller alignment index (SALI) is investigated to find a capture point where the asteroid is not put into a chaotic orbit. The proposed method is numerically demonstrated for fictional asteroid capture missions. The results show that several asteroids can be put into stable captured orbits. Additionally, we propose a method to optimize the value of the Jacobi integral, aiming to stabilize periodic captured orbits. Numerical integration confirms that when the Jacobi integral is optimized, the orbital lifetime of the captured orbit exceeds 500 years.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3806-3819"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402863","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}

{"title":"Finite-horizon approximate optimal attitude control based on adaptive dynamic programming for ultra-low-orbit satellite","authors":"Jiahong Ma,&nbsp;Baolin Wu,&nbsp;Yunhai Geng,&nbsp;Menglei Wang","doi":"10.1016/j.asr.2024.11.073","DOIUrl":"10.1016/j.asr.2024.11.073","url":null,"abstract":"<div><div>This study investigates the finite-horizon approximate optimal attitude control problem for ultra-low-orbit satellites, addressing the complexities introduced by substantial disturbance, actuator faults, actuator saturation, and time constraint. Initially, a fixed-time concurrent learning fault and disturbance estimation approach is proposed that relieves persistent excitation constraints and isolates different influences individually. Subsequently, the cost function is designed with actuator fault estimation, ensuring that the control strategy consistently adheres to actuator saturation constraints and can compensate for current faults. Furthermore, based on the adaptive dynamic programming, an approximate optimal attitude control approach is proposed, which employs time-varying activation functions to approximate the optimal cost function. A fixed-time neural network weight adaptation strategy is designed to ensure the precision and reliability of the approximation. Finally, the numerical simulation confirms the validity and practical applicability of the proposed approach in satellite attitude control systems.</div></div>","PeriodicalId":50850,"journal":{"name":"Advances in Space Research","volume":"75 4","pages":"Pages 3856-3869"},"PeriodicalIF":2.8,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402866","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}