11 citations · 31 across the 9 of their papers we have counts for
10 papers
Integrated Routing and Trajectory Design for Satellite Servicing
Euihyeon Choi, Koki Ho
This paper studies the integrated spacecraft routing and trajectory optimization problem for satellite servicing missions involving partial en-route propellant replenishment. Unlik…
Concurrent Optimization of Satellite Phasing and Tasking for Cislunar Space Situational Awareness
Malav Patel, Kento Tomita, Koki Ho
Recently, renewed interest in cislunar space spurred by private and public organizations has driven research for future infrastructure in the region. As Earth-Moon traffic increase…
Revolution-Spaced Output-Feedback Model Predictive Control for Station Keeping on Near-Rectilinear Halo Orbits
Yuri Shimane, Stefano Di Cairano, Koki Ho +1
We develop a model predictive control (MPC) policy for station keeping on a Near-Rectilinear Halo Orbit (NRHO). The proposed policy achieves full-state tracking of a reference NRHO…
Real-Time Stochastic Terrain Mapping and Processing for Autonomous Safe Landing
Kento Tomita, Koki Ho
Onboard terrain sensing and mapping for safe planetary landings often suffer from missed hazardous features, e.g., small rocks, due to the large observational range and the limited…
Cislunar Space Situational Awareness Constellation Design and Planning with Facility Location Problem
Yuri Shimane, Kento Tomita, Koki Ho
Driven by the surmounting interest for dedicated infrastructure in cislunar space, this work considers the satellite constellation design for cislunar space situational awareness (…
Generalizing Space Logistics Network Optimization with Integrated Machine Learning and Mathematical Programming
Koki Ho, Yuri Shimane, Masafumi Isaji
Recent growing complexity in space missions has led to an active research field of space logistics and mission design. This research field leverages the key ideas and methods used…
Sensitivity Analysis of Separation Time Along Weak Stability Boundary Transfers
Isabel Nolton, Kento Tomita, Yuri Shimane +1
This study analyzes the sensitivity of the dynamics around Weak Stability Boundary Transfers (WSBT) in the elliptical restricted three-body problem. With WSBTs increasing popularit…
Deterministic Multistage Constellation Reconfiguration Using Integer Programming and Sequential Decision-Making Methods
Hang Woon Lee, David O. Williams Rogers, Brycen D. Pearl +2
In this paper, we address the problem of reconfiguring Earth observation satellite constellation systems through multiple stages. The Multi-stage Constellation Reconfiguration Prob…
Cislunar Satellite Constellation Design Via Integer Linear Programming
Malav Patel, Yuri Shimane, Hang Woon Lee +1
Cislunar space domain awareness is of increasing interest to the international community as Earth-Moon traffic is projected to increase, which raises the problem of placing space-b…
Multi-Spacecraft Predictive Sensor Tasking for Cislunar Space Situational Awareness
Kento Tomita, Yuri Shimane, Koki Ho
This paper delves into the predictive sensor tasking algorithm for the multi-observer, multi-target sensor setting, leveraging the Extended Information Filter (EIF). Conventional p…