The CYGNSS Mission: On-Going Science Team Investigations by Carreno-Luengo, Hugo, Crespo, Juan A., Akbar, Ruzbeh, Bringer, Alexandra, Warnock, April, Morris, Mary, Ruf, Chris

“…The orbital configuration of each CYGNSS satellite is a circular Low Earth Orbit (LEO) with an altitude ~520 km and an inclination angle of ~35°. …”
Get full text

Connecting the other half: Exploring options for the 50% of the population unconnected to the internet by Del Portillo Barrios, Inigo, Eiskowitz, Skylar, Crawley, Edward F, Cameron, Bruce Gregory

“…In particular, constellations of geostationary orbit (GEO) satellites, large constellations of medium Earth orbit (MEO) and low Earth orbit (LEO) satellites, and high- and low-altitude aerial platforms are studied. …”
Get full text

Performance Analysis of Algorithms for Coordination of Earth Observation by CubeSat Constellations by Kennedy, Andrew, Cahoy, Kerri

“…The algorithms are simulated for 24 h with an 18 satellite Low Earth Orbit constellation. Three orbital geometries are examined, with different configurations of intersatellite and satellite-to-ground communications links to share planning information. …”
Get full text

Design and testing of auv docking modules for a renewably powered offshore auv servicing platform by Haji, Maha N., Tran, Jimmy, Norheim, Johannes J, de Weck, Olivier L

“…PEARL is an integrated autonomous floating servicing station that utilizes renewable energy to simultaneously provide AUV battery recharging and data uplink via new generation high-bandwidth low-Earth orbit satel-lite constellations. This paper details the design and testing of two potential AUV docking modules of the PEARL system. …”
Get full text

Autonomous satellite navigation using intersatellite laser communications by Davé, Pratik K. (Pratik Kamlesh), Cahoy, Kerri

“…Numerical simulations are used to compare the lasercom crosslink approach with traditional positioning and navigation methods in example application cases in low Earth-orbit (LEO), geostationary Earth-orbit (GEO), highly elliptical orbit (HEO), and a Mars-orbiting constellation. …”
Get full text

Analytical Guidance for Circular Orbit Transfers with Staging of Space Propulsion Systems by Jia-Richards, Oliver, Lozano, Paulo C.

“…The use of the analytical reference trajectory is simulated on an orbit transfer from low-Earth orbit to geostationary orbit.…”
Get full text

A Genetic Algorithm Framework using Variable Length Chromosomes for Vehicle Maneuver Planning by Yu, Benjamin James

“…A small simplified 1D abstract problem is formulated and solved with this framework to familiarize the reader, before two case studies: (1) a reconfigurable satellite constellation observing Earth targets, and (2) an ocean-going maneuvering platform completing a cross-Atlantic voyage while simultaneously offering itself as a calibration target to overhead Low Earth Orbit (LEO) satellites, are explored indepth. …”
Get full text

Space-Based Sensor Tasking Using Deep Reinforcement Learning by Siew, Peng M., Jang, Daniel, Roberts, Thomas G., Linares, Richard

“…In this paper, we developed a deep reinforcement learning agent to task a space-based narrow-FOV sensor in low Earth orbit (LEO) using the proximal policy optimization algorithm. …”
Get full text

Improvements to LEO Tracking on The Portable Telescope for Lasercom (PorTeL) by Harburg, Jacob F.

“…This thesis focuses on updates made to PorTeL to enable it to receive optical downlinks from the CubeSat Laser Infrared CrosslinK (CLICK) mission satellites in low-Earth orbit (LEO). We show that PorTeL is able to track CLICK-A with an accuracy of 11.1 arcseconds, well within its requirement of 21.8 arcseconds.…”
Get full text
Get full text

Heterogeneous Satellite Constellation Design for Cislunar Space Situational Awareness Using Real Options Analysis by Wachs, Jordan

“…The number of commercial satellites in Low Earth Orbit (LEO) increased more than four-fold in the decade between 2011 and 2021, a trend that is likely to continue due to the combination of increasingly capable technologies and business models [23] [24]. …”
Get full text

Reduced-Order Atmospheric Density Modeling for LEO Satellite Orbital Reentry Prediction by Clark, Nicolette LeAnn

“…Atmospheric density modeling and uncertainty quantification for fast and accurate orbit propagation are vital to drag force estimation for satellite reentry prediction and conjunction assessment in today's increasingly cluttered Low Earth Orbit (LEO) environment. Current density models can be computationally expensive, and often contain large errors, which make density modeling a leading cause of uncertainty in drag estimation. …”
Get full text

On the Atmospheric Saliency of Space Debris Reentries: Estimating Distribution, Lifetime and Radiative Forcing of Reentry-Ablated Alumina by Jain, Asha Kailin

“…As the space economy grows, numerous satellite operators are looking to build megaconstellations in Low Earth Orbit (LEO). These megaconstellations are expected to have hundreds to thousands of satellites operating in altitudes from 350km to 650km. …”
Get full text

Development of a Special Purpose End-to-End Satellite Constellation Design Methodology by Cummings, Andrew T.

“…Recent improvements in payload delivery to low-Earth orbit (LEO) have significantly improved the capacity to economically deploy satellite constellations. …”
Get full text

Range-Doppler-Time Tensor Processing for Deep-Space Satellite Characterization Using Narrowband Radar by Serrano, Alexander, Capper, Jack, Morrison, Robert L., Abouzahra, Mohamed D.

“…While wideband radars are used routinely for characterizing satellites in Low-Earth Orbit (LEO), powerful radars with sensitivity sufficient for large GEO ranges (36,000 km or greater) are lacking. …”
Get full text

Adaptation of ISO 23247 to Aerospace Digital Twin Applications-On-Orbit Collision Avoidance and Space-Based Debris Detection by Shtofenmakher, Allan, Shao, Guodong

Get full text

Feasibility Analysis of On-Orbit Debris Detection Using Commercial Star Trackers by Shtofenmakher, Allan, Balakrishnan, Hamsa

Get full text

Design considerations for a space-based transit search for Earth analogs by Beatty, Thomas Gavin

Get full text

CubeSat deformable mirror demonstration by Cahoy, Kerri, Cheng, Kezi, Jamil, Sara, Marinan, Anne D., Kerr, Caitlin E.

“…The goal of the CubeSat Deformable Mirror Demonstration (DeMi) is to characterize the performance of a small deformable mirror over a year in low-Earth orbit. Small form factor deformable mirrors are a key technology needed to correct optical system aberrations in high contrast, high dynamic range space telescope applications such as space-based coronagraphic direct imaging of exoplanets. …”
Get full text
Get full text
Get full text

From CubeSats to constellations : systems design and performance analysis by Marinan, Anne Dorothy

Get full text

Multi-region capacity planning model with contracts of varying duration under uncertainty : a satellite capacity acquisition case study by Lydiard, John M., IV

Get full text