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Autonomous Initial Orbit Determination Using Sequential Range-Rate Measurements J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-04-17 Linyi Hou, Zachary R. Putnam
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Pole-Sitter Based Space Domain Awareness for Cislunar Objects J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-26 Roberta M. Ewart, Elozor Plotke, Peter C. Lai
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Spacecraft Formation Keeping and Reconfiguration Using Optimal Visual Servoing J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-26 Jorge Pomares, Leonard Felicetti, Gabriel J. García, José L. Ramón
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Attitude Constrained Robust Explicit Guidance for Terminal Phase of Autonomous Lunar Soft-Landing J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-26
Abstract An attitude-constrained jerk-minimizing optimal explicit terminal guidance is presented in this paper for the terminal phase of a multi-phase lunar soft-landing. An analytic expression for the acceleration vector serves as the guidance command that can be computed by low-speed onboard processors in real-time. High terminal accuracy in each phase is achieved by enforcing ‘hard terminal constraints’
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Reduced Desensitization Formulation for Optimal Control Problems J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-26 Praveen Jawaharlal Ayyanathan, Ehsan Taheri
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Geometric Solution to Probabilistic Admissible Region (PAR) J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-25 Utkarsh Mishra, Suman Chakravorty, Weston Faber, Islam Hussein, Siamak Hesar, Benjamin Sunderland
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A Stochastic Drag Model for Improved Uncertainty Realism of Select LEO Orbit Predictions J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-12
Abstract Atmospheric drag is a principal cause of uncertainty in predictions of low Earth orbits and a key factor concerning the degree of uncertainty realism achieved by prediction models. The stochastic effects of atmospheric drag have most often been accounted for by considering the atmospheric density or another related quantity, such as the inputs to an atmospheric density model or the ballistic
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Characterizing Accuracy of Normal Forms to Study Trajectories in Cislunar Space J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-12 David Schwab, Roshan Eapen, Puneet Singla
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The Spectral Characterization of Novel Spacecraft Materials in the Low Earth Orbit Environment J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-08
Abstract The protection of satellites from the harsh space environment is heavily reliant on external spacecraft materials. These materials undergo continuous changes in their physical, chemical, and optical properties due to exposure to solar radiation and aggressive chemical species present in Earth's upper atmosphere. By gaining a thorough understanding of how these material properties evolve over
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Satellite Cluster Flight Using Guidance Trajectory and Model Predictive Control J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-07 Tyson Smith, John Akagi, Greg Droge
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New Time-Integral Variational Principle J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-05 John E. Hurtado
Time-integral variational principles offer a theoretical perspective and practical advantages. They provide a concept for understanding the behavior of dynamical systems and a means to develop governing equations of motion. In analytical mechanics, Hamilton’s principle is the most prominent variational principle and it is commonly connected to the classic Lagrange equations. This study extends those
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Acceleration-Based Switching Surfaces for Impulsive Trajectory Design Between Cislunar Libration Point Orbits J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-03-05 Keziban Saloglu, Ehsan Taheri
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Simulation on Flexible Multibody System with Topology Changes for In-space Assembly J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-02-20 Yifan Qi, Minghe Shan
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Learning-Based Parameter Optimization for a Class of Orbital Tracking Control Laws J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-02-06 Gianni Bianchini, Andrea Garulli, Antonio Giannitrapani, Mirko Leomanni, Renato Quartullo
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Rapidly Exploring Random Trees with Physics-Informed Neural Networks for Constrained Energy-Optimal Rendezvous Problems J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-02-01
Abstract This article introduces physics-informed neural networks (PINNs) to the field of motion planning by utilizing a PINN framework as the steering function in the kinodynamic rapidly-exploring random tree (RRT*) algorithm. The goal of this paper is to show that PINN-based methods can be used successfully for aerospace motion planning applications. We test the RRT* algorithm coupled with PINN steering
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Bidirectional Reflectance Distribution Function (BRDF) Measurement of Materials Aged Under Simulated Space Environment J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-01-29
Abstract Spacecraft materials play a crucial role in safeguarding satellites from space’s harsh conditions. However, exposure to solar radiation and aggressive chemical species in the upper atmosphere alters these materials’ physical, chemical, and optical properties over time. Understanding material evolution during a mission enhances spacecraft reliability. By establishing correlations between on-orbit
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Statistical Analysis of Optimal Stationkeeping Location and Coast Duration Using Stretching Directions J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-01-29 Karina Rivera Lopez, Marcus Holzinger
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A Norm-Minimization Algorithm for Solving the Lost-in-Space Problem with XNAV J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-01-12 Linyi Hou, Zachary R. Putnam
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An Autonomous Planetary Navigation System Independent of GNSS and Ground Station Tracking J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-01-11 Omar Awad, Matthew Stoeckle, Kenshiro Oguri
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A Survey of Orbit Design and Selection Methodologies J. Astronaut. Sci. (IF 1.8) Pub Date : 2024-01-03 Nathaniel Choo, Darryl Ahner, Bryan Little
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Simulation and Analysis of Event Camera Data for Non-resolved Objects J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-12-18 Conor Benson, Marcus Holzinger
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Vectorized Trigonometric Regularization for Singular Control Problems with Multiple State Path Constraints J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-12-12 Yevhenii Kovryzhenko, Ehsan Taheri
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Simulation of a Geosynchronous Satellite with DIRSIG™ and Observations from Two Falcon Telescopes J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-12-13 Hector Erives-Contreras, Miguel Velez-Reyes, Francis K. Chun, David M. Strong, Aryzbe Najera
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Distributed Swarm Optimization for the Solution of Boundary Value Problems in Astrodynamics J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-12-04 Grant R. Hecht, Eleonora M. Botta
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Relative Distance Control of Uncooperative Tethered Debris J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-12-04 Liam Field, Eleonora M. Botta
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Zero Placement for Discrete Time Systems J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-28 Jer-Nan Juang, Richard W. Longman
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Analysis, Design, and Optimization of Robust Trajectories in Cislunar Environment for Limited-Capability Spacecraft J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-22 Carmine Giordano, Francesco Topputo
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The Analysis of the Photogravitational R4BP Under the Combined Effect of Stokes Drag and Oblateness with Variable Mass J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-20 Amit Mittal, Krishan Pal, Rajiv Aggarwal
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On the Performance of Different Smoothing Methods for Indirect Low-Thrust Trajectory Optimization J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-16 Yanis Sidhoum, Kenshiro Oguri
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Spacecraft Materials’ Reflectivity and Surface Morphology: Aging Caused by Proton Irradiation J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-16 Denise Keil, Maciej Sznajder, Thomas Renger, Nils Bartels, Patric Seefeldt, Wolfgang Riede, Tom Spröwitz, Thomas Dekorsy
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Analysis of Autonomous Orbit Determination in Various Near-Moon Periodic Orbits J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-16 Daniel C. Qi, Kenshiro Oguri
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Coevolving Defender Strategies Within Adversarial Ground Station Transit Time Games via Competitive Coevolution J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-10 Manuel Indaco, Sean N. Harris, Deacon Seals, Samuel Mulder, Daniel R. Tauritz, Davide Guzzetti
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Optimal Sensor Planning for SSA Using System Identification Concepts J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-09 Per Hägg
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A Low-Complexity Algorithm to Determine Trajectories Within the Circular Restricted Three-Body Problem J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-07 David Canales, Sirani M. Perera, Atahan Kurttisi, Brian Baker-McEvilly
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Rapid and Automatic Reachability Estimation of Electric Propulsion Spacecraft J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-11-02 Prashant R. Patel, Daniel J. Scheeres
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Batch Dilution of Precision Optimal Navigation Planning for Cislunar Environments J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-10-18 Quinn Moon, David K. Geller
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Software-in-the-Loop Validation of a Novel Two-Point Optimal Guidance for Perturbed Spacecraft Rendezvous and Formations J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-10-04 Yazan Chihabi, Steve Ulrich
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Catalog-Based Atmosphere Uncertainty Quantification J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-26 Alejandro Cano, Alejandro Pastor, Joaquín Míguez, Manuel Sanjurjo-Rivo, Diego Escobar
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Space Radiation Effects on Surface and Bulk Resistivity of Polymeric Materials J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-26 Alexey Sokolovskiy, Jainisha Shah, Sydney Collman
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Influence of High-Energy Electron Bombardment on the Material Properties of Spacecraft Polymers J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-25 Samuel Westrick, Samantha Lambrecht, Alexey Sokolovskiy, Sydney Collman, Jainisha Shah, Ryan Hoffmann, Daniel Engelhart
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Lunar Orbit Determination Sensitivity Analysis with Reference to Observational Geometry J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-22 James McElreath, Manoranjan Majji
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The Oblate Lambert Problem: Geometric Formulation and Solution of an Unperturbed, Generalized Lambert Problem Governed by Vinti’s Potential J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-22 Ashley D. Biria
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Accurate Uncertainty Characterization of Impulsive Thrust Maneuvers in the Restricted Three Body Problem J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-14 Sharad Sharan, Roshan Eapen, Puneet Singla, Robert Melton
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Analytical Methods in Triangulation-Based Celestial Localization J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-14 Sébastien Henry, John A. Christian
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Satellite Manoeuvre Detection with Multistatic Radar J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-14 Simão da Graça Marto, Sebastián Díaz Riofrío, Christos Ilioudis, Carmine Clemente, Massimiliano Vasile
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Analysis of Spacecraft Materials Discrimination Using Color Indices for Remote Sensing for Space Situational Awareness J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-11 Jacqueline A. Reyes, Heather M. Cowardin, Miguel Velez-Reyes
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Motion Primitive Approach to Spacecraft Trajectory Design in a Multi-body System J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-09-11 Thomas R. Smith, Natasha Bosanac
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Optical Properties and Photostability of Microsized TiO2 Powders Modified with its Own Nano- and Hollow Particles J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-08-31 M. M. Mikhailov, A. N. Lapin, A. N. Sokolovskiy, V. V. Neshchimenko, S. A. Yuryev
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Local Lyapunov Exponent Augmented Differential Corrections Process for Cislunar Trajectory Targeting J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-08-28 Brennan Blumenthal, Rohan Sood
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Revisiting Universal Variables for Robust, Analytical Orbit Propagation Under the Vinti Potential J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-08-27 Ashley D. Biria
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Low-Thrust Lunar Capture Leveraging Nonlinear Orbit Control J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-08-16 Mauro Pontani, Marco Pustorino
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Hybrid Optimization of High-Fidelity Low-Thrust Transfers to the Lunar Gateway J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-08-10 Brian Patrick, Alex Pascarella, Robyn Woollands
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An Interpolated Second-Order Relative Motion Model for Gateway J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-08-08 David Cunningham, Ryan Russell
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A Physic-Informed Neural Network Approach to Orbit Determination J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-08-08 Andrea Scorsoglio, Luca Ghilardi, Roberto Furfaro
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Construction of Heteroclinic Connections Between Quasi-Periodic Orbits in the Three-Body Problem J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-07-20 Brian McCarthy, Kathleen Howell
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Spacecraft Coupled Roto-translational Time-Optimal Control for Rendezvous Missions J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-07-13 Sayyed Mohammad Mousavi, Sayyed Majid Esmailifar, Mohammad Chiniforoushan
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Optimizing Multi-spacecraft Cislunar Space Domain Awareness Systems via Hidden-Genes Genetic Algorithm J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-07-07 Lois Visonneau, Yuri Shimane, Koki Ho
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Data-Driven Lifetime Risk Assessment and Mitigation Planning for Large-Scale Satellite Constellations J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-07-05 Paul Diaz, Pol Mesalles Ripoll, Matthew Duncan, Mike Lindsay, Toby Harris, Hugh G. Lewis
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Dynamics in the Vicinity of the Stable Halo Orbits J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-06-27 David Lujan, Daniel J. Scheeres
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Incorporating Directional Uncertainties into Polynomial Chaos Expansions for Astronautics Problems J. Astronaut. Sci. (IF 1.8) Pub Date : 2023-06-21 Brandon A. Jones, Trevor N. Wolf