All Stories

  1. Spare Strategy Analysis and Design for Mega Satellite Constellations Using Markov Chain

    Article • Journal of Spacecraft and Rockets, June 2026, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  2. Economic Impact of Priority Queues on Geostationary Satellite Servicing Systems

    Article • Journal of Spacecraft and Rockets, January 2026, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  3. Optimal Routing and Trajectory Planning for Asteroid Mining With Partial In-Situ Resource Utilization

    Article • January 2026, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  4. Multi-Objective Optimization of Space Exploration Campaign Schedules with Stochastic Launch Delay

    Article • Journal of Spacecraft and Rockets, January 2026, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  5. Orbital Depot Location Optimization for Satellite Constellation Servicing with Low-Thrust Transfers

    Article • Journal of Spacecraft and Rockets, June 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  6. Cislunar Space Situational Awareness Constellation Design and Planning with Facility Location Problem

    Article • Journal of Spacecraft and Rockets, June 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  7. Debris Selection and Delivery Logistics for Lunar-Based Aluminum Recycling

    Article • January 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  8. Continuous Facility Location Problem of In-Orbit Assets With Embedded Surrogate Model

    Article • January 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  9. Using Lunar Resources to Grow a Lunar Base

    Article • January 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho, David Cease

  10. Reachability-Steering Approach for Autonomous Safe Planetary Landing

    Article • January 2025, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho, Kento Tomita

  11. Generalizing Space Logistics Network Optimization with Integrated Machine Learning and Mathematical Programming

    Article • Journal of Spacecraft and Rockets, October 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  12. Space Logistics Modeling and Optimization: Review of the State of the Art

    Article • Journal of Spacecraft and Rockets, September 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  13. Integrated Space Mission Planning Under Uncertainty via Stochastic and Decomposition-Based Optimization

    Article • July 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  14. Terminal Soft Landing Guidance Law Using Analytic Gravity Turn Trajectory

    Article • Journal of Guidance Control and Dynamics, July 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  15. Cislunar Satellite Constellation Design via Integer Linear Programming

    Article • The Journal of the Astronautical Sciences, May 2024, Springer Science + Business Media

    Associate Professor Koki Ho

  16. Hierarchical Framework for Space Exploration Campaign Schedule Optimization

    Article • Journal of Spacecraft and Rockets, April 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  17. Orbital Facility Location Problem for Satellite Constellation Servicing Depots

    Article • Journal of Spacecraft and Rockets, March 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  18. Modeling and Optimization for Space Logistics Operations: Review of State of the Art

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  19. Optimization of Lunar-Based Radar Networks Via a Multi-Disciplinary Analysis and Optimization (MDAO) Approach

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho, Mariel Borowitz

  20. Optimization of Multi-Mission Space Exploration Campaign Schedules Subject to Stochastic Launch Delay

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho, Nicholas Gollins

  21. Optimal Predictive Guidance for Autonomous Hazard Detection and Avoidance

    Article • January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Kento Tomita, Associate Professor Koki Ho

  22. Simultaneous Sizing of a Rocket Family with Embedded Trajectory Optimization

    Article • Journal of Spacecraft and Rockets, January 2024, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  23. Analytical Model for Sparing Policy Analysis and Optimization for Space Habitat Operations

    Article • Journal of Spacecraft and Rockets, August 2023, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  24. Optimizing Multi-spacecraft Cislunar Space Domain Awareness Systems via Hidden-Genes Genetic Algorithm

    Article • The Journal of the Astronautical Sciences, July 2023, Springer Science + Business Media

    Associate Professor Koki Ho

  25. Bayesian Deep Learning for Segmentation for Autonomous Safe Planetary Landing

    Article • Journal of Spacecraft and Rockets, September 2022, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  26. Multidisciplinary Design Optimization Approach to Integrated Space Mission Planning and Spacecraft Design

    Article • Journal of Spacecraft and Rockets, June 2022, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  27. Gravity-Assist Low-Thrust Inter-System Trajectory Design with Manifold Captures

    Article • The Journal of the Astronautical Sciences, April 2022, Springer Science + Business Media

    Associate Professor Koki Ho

  28. Benchmark Analysis of Semantic Segmentation Algorithms for Safe Planetary Landing Site Selection

    Article • IEEE Access, January 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Associate Professor Koki Ho

  29. Hierarchical Reinforcement Learning Framework for Stochastic Spaceflight Campaign Design

    Article • Journal of Spacecraft and Rockets, December 2021, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  30. Robustness Assessment of Low-Thrust Trajectory via Sequentially Truncated Sims-Flanagan Problems

    Article • November 2021, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  31. Multidisciplinary Design Optimization Approach to Integrated Space Mission Planning and Spacecraft Design

    Article • November 2021, American Institute of Aeronautics and Astronautics (AIAA)

    Yuji Takubo, Associate Professor Koki Ho

  32. Space Exploration Architecture and Design Framework for Commercialization

    Article • Journal of Spacecraft and Rockets, October 2021, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  33. Spacecraft trajectory tracking and parameter estimation around a splitting contact binary asteroid

    Article • Acta Astronautica, June 2020, Elsevier

    Associate Professor Koki Ho

  34. Integrated in-situ resource utilization system design and logistics for Mars exploration

    Article • Acta Astronautica, May 2020, Elsevier

    Associate Professor Koki Ho

  35. Optimizing Satellite Constellation Spare Strategy from a Logistics Perspective

    Article • Journal of Spacecraft and Rockets, September 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  36. Hierarchical Reinforcement Learning Framework for Space Exploration Campaign Design

    Article • August 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  37. Multi-Fidelity Space Mission Planning and Space Infrastructure Design Framework for Space Resource Logistics

    Article • August 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho, Linyi Hou

  38. Commercial lunar propellant architecture: A collaborative study of lunar propellant production

    Article • REACH, March 2019, Elsevier

    Associate Professor Koki Ho

  39. An Efficient Low-Thrust, Low-Energy Trajectory Design Method in Cislunar Space

    Article • Journal of Guidance Control and Dynamics, February 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  40. Staged-Deployment Design for Resilient Expansion Planning of Large Scale Complex Systems

    Article • January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  41. Space Transportation System and Mission Planning for Regular Interplanetary Missions

    Article • Journal of Spacecraft and Rockets, January 2019, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  42. Optimization of satellite constellation deployment strategy considering uncertain areas of interest

    Article • Acta Astronautica, December 2018, Elsevier

    Associate Professor Koki Ho

  43. Analytical Optimization Method for Space Logistics

    Article • Journal of Spacecraft and Rockets, November 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Zhengyu Chen, Associate Professor Koki Ho

  44. Impact Evaluation of In-Space Additive Manufacturing and Recycling Technologies for On-Orbit Servicing

    Article • Journal of Spacecraft and Rockets, November 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  45. Multi-Actor Analysis Framework for Space Architecture Commercialization

    Article • September 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  46. Optimization for Large-Scale Multi-Mission Space Campaign Design by Approximate Dynamic Programming

    Article • September 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  47. Multi-Actor Value Modeling for Federated Systems

    Article • IEEE Systems Journal, June 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Associate Professor Koki Ho

  48. Optimization of In-Space Supply Chain Design Using High-Thrust and Low-Thrust Propulsion Technologies

    Article • Journal of Spacecraft and Rockets, May 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  49. Earth-Mars transfers through Moon Distant Retrograde Orbits

    Article • Acta Astronautica, February 2018, Elsevier

    Associate Professor Koki Ho, Mr Davide Conte

  50. Information-Theoretic Target Search for Space Situational Awareness

    Article • January 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  51. Multi-Mission Space Campaign Design

    Article • Journal of Spacecraft and Rockets, October 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho, Hao Chen

  52. Analytical model of Space Infrastructure Staged Deployment Strategy in Space Logistics

    Article • September 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho, Zhengyu Chen

  53. Built-in Flexibility for Space Logistics Mission Planning and Spacecraft Design

    Article • September 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  54. Impact Evaluation of In-Space Additive Manufacturing on Modularized Geostationary Platforms

    Article • September 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  55. Space Transportation System and Infrastructure Design for Regular Interplanetary Cargo Missions

    Article • September 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  56. Value of Bootstrapping Staged Deployment of Infrastructure: Case Study in Space Infrastructure Deployment

    Article • August 2017, ASME International

    Associate Professor Koki Ho

  57. Quantification of the responsiveness of on-orbit servicing infrastructure for modularized earth-orbiting platforms

    Article • Acta Astronautica, March 2017, Elsevier

    Associate Professor Koki Ho

  58. Development of miniature robotic manipulators to enable SmallSat clusters

    Article • March 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Associate Professor Koki Ho

  59. Corrigendum to “Dynamic modeling and optimization for space logistics using time-expanded networks” [Acta Astronaut. 105 (2014) 428–443]

    Article • Acta Astronautica, February 2017, Elsevier

    Associate Professor Koki Ho

  60. Quantification of the Responsiveness of On-Orbit Servicing Infrastructure for Modularized Earth-Orbiting Platforms

    Article • September 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  61. Integrated Space Mission Planning and In-Orbit Infrastructure Design with Mixed-Integer Programming

    Article • September 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  62. Campaign-level Mission Planning with Integrated Trajectory Design and Propulsion Technology Trades

    Article • September 2016, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  63. Campaign-level dynamic network modelling for spaceflight logistics for the flexible path concept

    Article • Acta Astronautica, June 2016, Elsevier

    Associate Professor Koki Ho

  64. Bounding the value of collaboration in federated systems

    Article • April 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Associate Professor Koki Ho

  65. An independent assessment of the technical feasibility of the Mars One mission plan – Updated analysis

    Article • Acta Astronautica, March 2016, Elsevier

    Associate Professor Koki Ho

  66. Dynamic modeling and optimization for space logistics using time-expanded networks

    Article • Acta Astronautica, December 2014, Elsevier

    Associate Professor Koki Ho

  67. On-orbit depot architectures using contingency propellant

    Article • Acta Astronautica, March 2014, Elsevier

    Associate Professor Koki Ho

  68. Dynamic Network Modeling for Spaceflight Logistics

    Article • January 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Dr. Robert Shishko, Associate Professor Koki Ho

  69. Concurrent Design of Scientific Crewed Space Habitats and Their Supporting Logistics System

    Article • Journal of Spacecraft and Rockets, January 2014, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  70. Improved Concurrent Optimization Formulation of Crewed Space Habitats and Their Supporting Logistics Systems

    Article • September 2013, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  71. Disturbance Torque Compensation of the BepiColombo Spacecraft during Interplanetary Cruise Flight using Solar Sailing Effect

    Article • August 2013, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  72. Integrated Framework for the Design of Crewed Space Habitats and their Supporting Logistics System

    Article • September 2012, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  73. A survey of algorithms for star identification with low-cost star trackers

    Article • Acta Astronautica, April 2012, Elsevier

    Associate Professor Koki Ho

  74. Novel Star Identification Method Combining Two Star Trackers with Extended FOVs

    Article • August 2010, American Institute of Aeronautics and Astronautics (AIAA)

    Associate Professor Koki Ho

  75. Novel star identification algorithm utilizing images of two star trackers

    Article • March 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Associate Professor Koki Ho

  76. New Star Identification Algorithm for Multiple Star Trackers with Unequal Qualities

    Article • IFAC Proceedings Volumes, January 2010, Elsevier

    Associate Professor Koki Ho