S
Sreeja Nag
Researcher at Ames Research Center
Publications - 52
Citations - 501
Sreeja Nag is an academic researcher from Ames Research Center. The author has contributed to research in topics: Spacecraft & Payload. The author has an hindex of 11, co-authored 52 publications receiving 404 citations. Previous affiliations of Sreeja Nag include Advanced Concepts Team & Woods Hole Oceanographic Institution.
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Journal ArticleDOI
Behaviour based, autonomous and distributed scatter manoeuvres for satellite swarms
TL;DR: This paper addresses the capability of clusters with tens and scores of satellites to perform the collision avoidance manoeuvre in the event of an external, kinetic impact threat, via distributed autonomous control and to return to its original configuration after the threat has passed.
Journal ArticleDOI
Scheduling algorithms for rapid imaging using agile Cubesat constellations
Sreeja Nag,Alan Li,James Merrick +2 more
TL;DR: A modular framework that combines orbital mechanics, attitude control and scheduling optimization to plan the time-varying, full-body orientation of agile Cubesats in a constellation such that they maximize the number of observed images and observation time, within the constraints of Cubesat hardware specifications is proposed.
Journal ArticleDOI
Collaborative gaming and competition for CS-STEM education using SPHERES Zero Robotics $
TL;DR: The ZR web tools are introduced, the educational value delivered by the program using space and games is assessed, the utility of collaborative gaming within this framework is evaluated and the influence of collaboration was investigated.
Proceedings ArticleDOI
Cost and risk analysis of small satellite constellations for earth observation
TL;DR: In this article, the applicability of current cost and risk models to distributed small satellite missions is identified and data-based modeling to suggest changes that can be made in some of them to improve applicability.
Proceedings ArticleDOI
SPHERES Zero Robotics software development: Lessons on crowdsourcing and collaborative competition
TL;DR: The applicability of crowdsourcing and collaborative competition in the design of the Zero Robotics software infrastructure, metrics of success and achievement of objectives are discussed.