5 papers · 1 filter
Full Stack Navigation, Mapping, and Planning for the Lunar Autonomy Challenge
Adam Dai, Asta Wu, Keidai Iiyama +4
We present a modular, full-stack autonomy system for lunar surface navigation and mapping developed for the Lunar Autonomy Challenge. Operating in a GNSS-denied, visually challengi…
GNSS-based Lunar Orbit and Clock Estimation With Stochastic Cloning UD Filter
Keidai Iiyama, Grace Gao
This paper presents a terrestrial GNSS-based orbit and clock estimation framework for lunar navigation satellites. To enable high-precision estimation under the low-observability c…
Satellite Autonomous Clock Fault Monitoring with Inter-Satellite Ranges Using Euclidean Distance Matrices
Keidai Iiyama, Daniel Neamati, Grace Gao
To address the need for robust positioning, navigation, and timing services in lunar environments, this paper proposes a novel onboard clock phase jump detection framework for sate…
Ionospheric and Plasmaspheric Delay Characterization for Lunar Terrestrial GNSS Receivers with Global Core Plasma Model
Keidai Iiyama, Grace Gao
Recent advancements in lunar positioning, navigation, and timing (PNT) have demonstrated that terrestrial GNSS signals, including weak sidelobe transmissions, can be exploited for…
Autonomous Constellation Fault Monitoring with Inter-satellite Links: A Rigidity-Based Approach
Keidai Iiyama, Daniel Neamati, Grace Gao
To address the need for robust positioning, navigation, and timing services in lunar environments, this paper proposes a novel fault detection framework for satellite constellation…