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Articles 1081 - 1110 of 16607
Full-Text Articles in Entire DC Network
Generalized Attitude Estimation For Spacecraft, Patrick Mckeen, Kerri Cahoy
Generalized Attitude Estimation For Spacecraft, Patrick Mckeen, Kerri Cahoy
Small Satellite Conference
Attitude state estimation for spacecraft often requires writing an integrator or filter from scratch, with choices depending on the expected sensors, spacecraft and mission properties, and computational resources available. We create a customizable object-oriented satellite dynamics model with a variety of sensors, actuators, and disturbances that can be easily applied to any small spacecraft. Relevant disturbances can be modeled (or ignored), sensor and actuator biases are tracked, and outside effects like eclipse on sun sensors are included. In this work, we demonstrate the use of a new model to create a dynamics-aware unscented Kalman filter (UKF) that, in simulation, outperforms …
Applying Machine Learning To Equatorial Plasma Bubble Now Casting On Cubesats, Benjamin Lewis, Shawn Jones, Charles Swenson, Kevin Moon, Mario Harper
Applying Machine Learning To Equatorial Plasma Bubble Now Casting On Cubesats, Benjamin Lewis, Shawn Jones, Charles Swenson, Kevin Moon, Mario Harper
Small Satellite Conference
Equatorial plasma bubbles are a space weather phenomenon that occur at low latitudes within the Earth’s ionosphere. These bubbles are regions of low-density plasma that form at the base of the ionosphere and expand upward through the peak and into the topside. They form in the early evening and persist through the nighttime, stretching north and south along magnetic field lines and effecting a sector of longitudes a few degrees wide. These bubbles cause scintillations on radio signals that pass through them, disrupting the performance of systems, such as GPS, throughout the night in regions around the Earth. Due to …
Adversarial Assessment Of The F Prime Flight Software Framework: Findings And Recommendations, Michael Boehm, Steven Doran, Arun Viswanathan
Adversarial Assessment Of The F Prime Flight Software Framework: Findings And Recommendations, Michael Boehm, Steven Doran, Arun Viswanathan
Small Satellite Conference
F Prime (F’) is a multi-platform, open-source flight software (FSW) framework developed by the Jet Propulsion Laboratory (JPL). F’ provides a highly capable, component-driven framework tailored towards, but not limited to, small-scale systems like CubeSats, SmallSats, and instruments. We conducted an adversarial assessment of F’ aimed at evaluating its security vulnerabilities. This preliminary assessment of F’ entailed a multi-stage simulation of a malicious actor’s activities, including open-source reconnaissance, passive and active reconnaissance, and exploitation. In this paper, we present our methodology and discuss the preliminary findings of this assessment, which highlighted several areas where F’ could be enhanced. These areas …
Navigating Regulatory And Ethical Hurdles With Hexsat: A Detachable Net Casting Spider-Inspired Space Debris Removal Concept, Leonor Merino Osornio, Mostafa Hassanalian
Navigating Regulatory And Ethical Hurdles With Hexsat: A Detachable Net Casting Spider-Inspired Space Debris Removal Concept, Leonor Merino Osornio, Mostafa Hassanalian
Small Satellite Conference
As the amount of space debris in orbit continues to increase, the need for methods of mitigating space debris becomes urgent. Drawing inspiration from nature, a net casting spider-inspired method of space debris removal has been proposed. This method, embodied in the HexSat design, features six separate wedges that can deploy to form a net for capturing debris. Once the target debris is captured, HexSat will intentionally reenter the atmosphere, where it will burn up. Any missions aimed at cleaning up space debris will face numerous challenges posed by international space regulations. To assess these challenges, a hypothetical scenario was …
Development Of An On-Orbit Alignment Calibration Methodology For Optical Payloads, Christos Liaconis, Bradley Cotton, Robert E. Zee
Development Of An On-Orbit Alignment Calibration Methodology For Optical Payloads, Christos Liaconis, Bradley Cotton, Robert E. Zee
Small Satellite Conference
Geolocating maritime targets from space is challenging due to the lack of references in the images. To solve this, geolocation is accomplished using on-orbit measured attitude and orbital position data. Attitude data is collected in the form of a star tracker quaternion solution and position data is collected from a GPS receiver.
Arcticsat: A Cubesat For Canada’S North, With Canada’S North, Andrew Bowman, David Kattegatsiak, Spencer Ryznar, Layne Ransom, Shakiba Mir Ahmadi, Aref Asgari, Riley Sweeney, Ricky Gill, Vishnu Nadan, Bashar Esmail, Fatiah Balogun, Dustin Isleifson, Kiledar Singh Tomar, John Yackel, Philip Ferguson
Arcticsat: A Cubesat For Canada’S North, With Canada’S North, Andrew Bowman, David Kattegatsiak, Spencer Ryznar, Layne Ransom, Shakiba Mir Ahmadi, Aref Asgari, Riley Sweeney, Ricky Gill, Vishnu Nadan, Bashar Esmail, Fatiah Balogun, Dustin Isleifson, Kiledar Singh Tomar, John Yackel, Philip Ferguson
Small Satellite Conference
Canada’s northern Inuit and Indigenous communities are experiencing climate change four times faster than the rest of the planet, impacting their traditional means of travel, hunting, and fishing. As temperatures rise, the sea ice forms later and melts earlier, allowing less time to perform these activities safely. While current satellite radiometry data can provide insight into the safety of the ice, Inuit communities require more timely and open access to this data. ArcticSat is a 3U CubeSat being co-developed with the Hamlet of Chesterfield Inlet, Nunavut, Canada, made to accomplish these goals. Community co-development ensures that community members lead the …
Wolfsat-1: A 1u Cubesat To Monitor Enzyme Activity Of Ideonella Sakaiensis In The Microgravity Environment, Kevin Simmons, Jasmin Consales, Alexander Castronovo, Colin Quinn, Daniel Portal Levy, Dylan Kiesling, Paul Kiesling
Wolfsat-1: A 1u Cubesat To Monitor Enzyme Activity Of Ideonella Sakaiensis In The Microgravity Environment, Kevin Simmons, Jasmin Consales, Alexander Castronovo, Colin Quinn, Daniel Portal Levy, Dylan Kiesling, Paul Kiesling
Small Satellite Conference
The Problem: Plastic Pollution • 420 million tons of plastic waste/year. • Microplastics pervade in the air, water, and soil of Earth and have even been found in human blood. • We need to recycle single use plastics in an energy efficient manner.
Pulse Pocketqube: Cosmic Radiation Analysis Of The Leo Environment During A Solar Event, Faith Tng, Vasantha Kanesh Muruganantham, Palaniappan Subramanian, Cem Avsar
Pulse Pocketqube: Cosmic Radiation Analysis Of The Leo Environment During A Solar Event, Faith Tng, Vasantha Kanesh Muruganantham, Palaniappan Subramanian, Cem Avsar
Small Satellite Conference
Space weather events can cause harmful effects to spacecraft and communications in Low Earth Orbit, where the cosmic radiation environment during such an event is understudied. Real-time data that characterizes this environment in detail with respect to spatial and temporal characteristics could help us better understand particle composition and interactions in LEO during a solar event, as well as enhance existing predictive models for space mission planning. Current approaches have limited information on particle composition with respect to dose and energy rates, and are hindered by high costs in deploying large space weather monitoring constellations. This proposed satellite mission, PULSE, …
Ground-Based Attitude Determination And Control System Testing, Piper L. Kline, Miguel A. Nunes, Kaitlyn Matsunaga, Yosef Ben Gershom
Ground-Based Attitude Determination And Control System Testing, Piper L. Kline, Miguel A. Nunes, Kaitlyn Matsunaga, Yosef Ben Gershom
Small Satellite Conference
Automation of Attitude Determination and Control System (ADCS) commissioning steps and verification of actuator polarity on the ground for CubeSats can help decrease the overall commissioning timeline after deployment and allow nominal science observations to begin sooner, saving time for ground operators and maximizing science return. This work focused on the verification and validation of the ADCS software and commissioning steps for the Hyperspectral Thermal Imager (HyTI) satellite, a 6U CubeSat whose ADCS was supplied by CubeSpace Satellite Systems. The integrated HyTI CubeSat was tested on the Attitude Control System Testbed (ACSTB) logated at the Hawai'i Space Flight Laboratory (HSFL), …
Putting The “Space” In Hyperspace: Investigating Hyperdimensional Computing For Space Applications, Ian R. Peitzsch, Evan W. Gretok, Alan D. George
Putting The “Space” In Hyperspace: Investigating Hyperdimensional Computing For Space Applications, Ian R. Peitzsch, Evan W. Gretok, Alan D. George
Small Satellite Conference
Earth observation (EO) is currently a major application area of satellite operations. As more powerful imagers become more accessible and see increased use, these EO images will increase in size, which also increases the computational complexity of classifying them. Using neural networks for this task has limitations due to the small memory and compute capability possessed by embedded platforms. Instead, this research investigates a shift in machine-learning paradigms from neural networks to hyperdimensional computing (HDC). HDC uses very large vectors to represent and draw relations from data. HDC often has a lower latency, power usage, and memory footprint than neural …
Advancing Autonomy In Distributed Space Systems: Results From The Distributed Spacecraft Autonomy Experiment On Starling 1.0, Caleb Adams, Michael Iatauro, Brian Kempa, Richard Levinson, Jeremy Frank, Sergei Gridnev, Caroline Lassiter
Advancing Autonomy In Distributed Space Systems: Results From The Distributed Spacecraft Autonomy Experiment On Starling 1.0, Caleb Adams, Michael Iatauro, Brian Kempa, Richard Levinson, Jeremy Frank, Sergei Gridnev, Caroline Lassiter
Small Satellite Conference
The Distributed Spacecraft Autonomy (DSA) team at NASA’s Ames Research Center presents results of the DSA experiment onboard the Starling 1.0 mission. The DSA system showcases collaborative resource allocation for multi-point science data collection with four small spacecraft, highlighting autonomy in decision-making as a crucial factor for multi-spacecraft missions. Central to DSA’s operations is an autonomous GPS channel selection process used to optimize channel selection across the spacecraft swarm; the goal is to demonstrate fast, autonomous reactions to relevant scientific data. This is showcased by demonstrating the ability to capture ionospheric phenomena such as the Equatorial Ionization Anomaly and Polar …
Modelling Climate Effects On Site Productivity And Developing Site Index Conversion Equations For Jack Pine And Trembling Aspen Mixed Stands, Mahadev Sharma
Modelling Climate Effects On Site Productivity And Developing Site Index Conversion Equations For Jack Pine And Trembling Aspen Mixed Stands, Mahadev Sharma
Aspen Bibliography
Forest site productivity estimates are crucial for making informed forest resource management decisions.These estimates are valuable both for the tree species currently growing in the stands and for those being considered for future stands. Current models are generally designed for pure stands and do not account for the influence of climate on tree growth. Consequently, site index (SI) conversion equations were developed specifically for jack pine (Pinus banksiana Lamb.) and trembling aspen (Populus tremuloides Michx.) trees grown in naturally originated mixed stands. This work involved sampling 186 trees (93 of each species) from 31 even-aged mixed stands (3 …
[Mev Gamma-Ray Detector On The 50-Kg Class Satellite], K. S. Tanaka, J. Katasoka, R. Iwashita, R. Mori, T. Suga, S. Ogasawara, M. Tao, Y. Yatsu, C. Toshihiro, S. Takeda, M. Onishi
[Mev Gamma-Ray Detector On The 50-Kg Class Satellite], K. S. Tanaka, J. Katasoka, R. Iwashita, R. Mori, T. Suga, S. Ogasawara, M. Tao, Y. Yatsu, C. Toshihiro, S. Takeda, M. Onishi
Small Satellite Conference
We are planning to launch a 50kg-class satellite named GRAPHIUM, equipped with a small, high-performance Hybrid Compton Camera (INSPIRE) for MeV gamma-ray astronomy. Since the launch of the COMPTEL satellite in 1991, there have been limited observations in the MeV gamma-ray band. However, this energy range is crucial for studying nucleosynthesis processes. GRAPHIUM aims to conduct a wide-area survey of nuclear gamma rays from the galactic plane and includes gamma-ray observaitons of solar flares as one of its objectives. Equipped with a hybrid Compton camera system, GRAPHIUM can perform simultaneous X-ray and gamma-ray imaging. This is achieved by integrating the …
Otter: A Small Satellite For Responsive Space, David Freiknecht, Marc Hafemeister
Otter: A Small Satellite For Responsive Space, David Freiknecht, Marc Hafemeister
Small Satellite Conference
The dependence on space-based infrastructure for navigation and communication at sea and on land is greater than ever and provides a significant example of how the failure of a satellite can have far-reaching consequences for civilian and military end users depending on these capabilities. As the likelihood of a collision, technical failure or even an attack on the space architecture increases, the protection of this critical infrastructure in space becomes an even higher priority. This is where the Responsive Space Capabilities come into play which aim at recovering the missing capability in a quick manner. This can be achieved through …
Mission Sealion Integrated Cubesat Design Approach To Accommodate Mission Critical Payloads In A Low Earth Orbit, Sharanabasaweshwara Asundi, Christopher Schappi, Jimesh Bhagatji, Joshua Warren, Jeries Abedrabbo
Mission Sealion Integrated Cubesat Design Approach To Accommodate Mission Critical Payloads In A Low Earth Orbit, Sharanabasaweshwara Asundi, Christopher Schappi, Jimesh Bhagatji, Joshua Warren, Jeries Abedrabbo
Small Satellite Conference
In the dynamic landscape of space applications, CubeSats have emerged as pivotal platforms for scientific research, technological innovation, and educational endeavors. As the demand for small form factor satellites continues to rise, there is an increasingly critical need for a holistic and rapid development approach in the design of CubeSat structures and payloads. This research focuses on Old Dominion University’s (ODU) integrated design approach of accommodating mission critical payloads in its second space mission, nicknamed Mission SeaLion. The 3U CubeSat class satellite mission is a partnership between ODU, the U.S. Coast Guard Academy (USCGA), and the U.S. Air Force Institute …
Testing Of Wideband Small Satellite Receivers In Complex Radio Frequency Environments Using Synthetic Spectrum Generation Techniques, August Lear, Erica Peterson, Nicolaas Handojo, Nathan Cole, Robert E. Zee
Testing Of Wideband Small Satellite Receivers In Complex Radio Frequency Environments Using Synthetic Spectrum Generation Techniques, August Lear, Erica Peterson, Nicolaas Handojo, Nathan Cole, Robert E. Zee
Small Satellite Conference
As spacecraft technology improves, smaller cost-effective spacecraft become capable of increasingly sophisticated Earth observation missions, including wideband Radio Frequency (RF) sensing. Current methods available for validating the RF payloads on-board these missions, such as on-orbit payload validation using a pathfinder mission, are expensive, time consuming, and difficult. The challenge of modelling the RF environment of an orbital receiver is increased by path characteristics that become nontrivial at orbital velocities and distances, as well as unique modelling challenges such as ionospheric delay and multiple transmitters. A fast, inexpensive method for validating RF sensing payloads on the ground is presented in this …
Development Of A Compact Wide-Field Telescope To Be Mounted On Vertecs, Kohji Takimoto, Takao Nakagawa, Aoi Takahashi, Kei Sano, Yuto Tome, Hisataka Kawasaki, Shunsuke Nakagawa, Rin Sato, Shuji Matsuura, Yuki Hirose, Akimasa Ojika, Akane Tsumoto, Taiko Iwaki, Kohji Tsumura
Development Of A Compact Wide-Field Telescope To Be Mounted On Vertecs, Kohji Takimoto, Takao Nakagawa, Aoi Takahashi, Kei Sano, Yuto Tome, Hisataka Kawasaki, Shunsuke Nakagawa, Rin Sato, Shuji Matsuura, Yuki Hirose, Akimasa Ojika, Akane Tsumoto, Taiko Iwaki, Kohji Tsumura
Small Satellite Conference
In recent years, CubeSat projects have initiated plans to conduct astronomical observations by deploying mission payloads. CubeSats present a promising solution for swiftly addressing critical challenges in astrophysics with flexibility. Within Cubeats, where both the bus system and mission payload occupy about half of the volume, there is a necessity to miniaturize mission equipment. The critical factor in astronomical observations, light-gathering ability, is determined not only by the aperture size but, more importantly for diffuse emission, by the optical throughput, i.e., the product of the aperture area and the observing solid angle. Consequently, even with a compact optical system, specializing …
Minicor: Miniature Coronagraph For Heliophysics Research, Angelos Vourlidas, Aaron Magner, James Mason, Luc Gilles, Joe Centurelli, Arnaud Thernisien, Clarence Korendyke, Gabriel Gutierrez, Giogia Casadei, Miguel Pereira
Minicor: Miniature Coronagraph For Heliophysics Research, Angelos Vourlidas, Aaron Magner, James Mason, Luc Gilles, Joe Centurelli, Arnaud Thernisien, Clarence Korendyke, Gabriel Gutierrez, Giogia Casadei, Miguel Pereira
Small Satellite Conference
Coronagraphs are the only instruments that can capture the development of coronal mass ejections (CMEs) throughout the near-Sun space. Thus, they provide critical information for the physics of CME evolution and propagation and consequently for space weather forecasting. It makes strategic sense to lower the technological and logistical barriers for maintaining space-based coronagraphic observations. MiniCOR is an ambitious coronagraph design to address these challenges. The technical goal of MiniCOR is to demonstrate that a low-cost miniaturized 3U coronagraph, can return data with higher cadence and equal or better sensitivity than currently operating full-size coronagraphs. MiniCOR is a funded project under …
Untangling Safe-Mode Anomalies On The Cute Cubesat, Sebastian Escobar, Arika Egan, Kevin France, Dolon Bhattacharyya
Untangling Safe-Mode Anomalies On The Cute Cubesat, Sebastian Escobar, Arika Egan, Kevin France, Dolon Bhattacharyya
Small Satellite Conference
The Colorado Ultraviolet Transit Experiment (CUTE) is NASA's first 6U NASA Astrophysics CubeSat built by the Laboratory for Atmospheric and Space Physics (LASP). Its primary purpose is to observe the evolving atmospheres of short-period exoplanets in the near-ultraviolet. It was launched in September 2021 into a ~560 km, polar orbit with a 98.5° inclination. The spacecraft bus, featuring avionics and an attitude determination and control system (ADCS) with a single star tracker, was supplied by Blue Canyon Technologies (BCT). Since its launch, CUTE has experienced an unusually high frequency of ADCS-driven safe mode events, occurring up to three times per …
Statistical Anomaly Analysis Of Small Satellite Missions Focusing On Payloads, Alexander Schmidt, Nico Gerster, Johannes Bachmann, Alexander Groß, Roger Förstner
Statistical Anomaly Analysis Of Small Satellite Missions Focusing On Payloads, Alexander Schmidt, Nico Gerster, Johannes Bachmann, Alexander Groß, Roger Förstner
Small Satellite Conference
With the rapid development of space technology, the number of new satellites has expanded rapidly in recent years, and the applications of satellites have gradually expanded into other industries and deeper into academia. While the small satellite category is experiencing significant growth, the behavior of small satellites still requires more in-depth study. A growing number of academic and industrial customers are looking to use satellites to achieve their scientific or business goals without having to develop a full satellite mission, including a satellite platform. Hosting payloads on other satellites or procuring pre-qualified platforms enables new mission flexibility while minimizing the …
Development Of 2u Cubesat "Yotsuba-Kulover" For Geomagnetic Field Measurement By Undergraduate Student Satellite Project, Hirokazu Masui, Kitamura Kentaro, Meng Cho, Shuji Abe, Teiji Uozumi, Akimasa Yoshikawa
Development Of 2u Cubesat "Yotsuba-Kulover" For Geomagnetic Field Measurement By Undergraduate Student Satellite Project, Hirokazu Masui, Kitamura Kentaro, Meng Cho, Shuji Abe, Teiji Uozumi, Akimasa Yoshikawa
Small Satellite Conference
Kyushu Institute of Technology(Kyutech) have developing small satellites since 2006. Three satellites, AOBA-Velox III, FUTABA and MITSUBA(Unfortunately, lost due to rocket launch failure) have been developed in a student satellite project. This satellite project is promoted by under graduate students. The students conduct all of satellite development process as design, integration, test, safety document preparation and operation. Students can learn the satellite development process through hands-on. Fourth satellite is 2U Cube satellite for measurement of geomagnetic field "YOTSUBA-KUlover" and this program is a joint program with Kyushu University. It is the first satellite developed by Kyutech students project to conduct …
University Class Open Ground Station (Uniclogs), Glenn Lebrasseur, Andrew Greenberg, Anna Meneely, Kaleb Rice, Aiden Tuan
University Class Open Ground Station (Uniclogs), Glenn Lebrasseur, Andrew Greenberg, Anna Meneely, Kaleb Rice, Aiden Tuan
Small Satellite Conference
Most educational CubeSat projects have the same dilemma: not enough money to buy a commercially available ground station, and not enough internal experience and capabilities to build a reliable and inexpensive ground station in-house. We present a middle road to the commercial off-the-shelf (COTS) vs DIY conundrum for ground stations: the University Class Open Ground Station (UniCIOGS). UniCIOGS is an open-source satellite communications ground station meant to be customized and built by university and other small satellite operators around the world. UniCIOGS is primarily designed for amateur radio satellites; amateur licensing allows for groups to share transmit-capable stations. Even international …
Development Of Testing And Verification Procedures For Memesat-1'S Subsystems, Jillian Russell, Deepak Mishra
Development Of Testing And Verification Procedures For Memesat-1'S Subsystems, Jillian Russell, Deepak Mishra
Small Satellite Conference
MEMESat-1 is a 2U repeater crafted by the UGA Small Satellite Research Lab. It's geared towards inspiring the next generation of students to work in aerospace. MEMESat-1 is entering the stage of testing our satellite to ensure it will be prepared for its mission. These tests will be the respnsibility of MEMESat-1's Mission Operations team. MOPs will employ a series of ground tests to validate the satellite's subsystems, including its flight software via the DitL testing, communication via the Simulated Communication testing, power supply via the Charge Cycle testing, ADCS via the ADCS Verification testing, and command system via the …
Lunar High Quality Terrain Scanning Mission Using Lidar Technology, Mohammed Muqahhis, Mohammed Al Qahtani, Ziyad Al Shamrani, Abrar-Ul-Haq Baluch
Lunar High Quality Terrain Scanning Mission Using Lidar Technology, Mohammed Muqahhis, Mohammed Al Qahtani, Ziyad Al Shamrani, Abrar-Ul-Haq Baluch
Small Satellite Conference
As interest in exploring the moon grows, this study suggests a mission plan that involves using a CubeSat fitted with a LiDAR sensor (SALi) to survey large sections of the lunar landscape and gather precise information on its ruggedness and altitude. By making use of available components and an advanced Guidance, Navigation and Control (GNC) system featuring star trackers, IMUs and maintaining a circular polar orbit at 125 km above the moon’s surface the CubeSat will implement the Lambert Method for efficient orbital insertion around the moon and employ reaction wheels along with ion thrusters for accurate imaging. Communication will …
Temperature Dependence Of Gas X-Ray Detectors Onboard The 6u Cubesat X-Ray Observatory Ninjasat., Amira Aoyama, T. Tamagawa, T. Enoto, T. Kitaguchi, Y. Kato, T. Mihara, W. Iwakiri, M. Numazawa, Y. Zhou, K. Uchiyama, T. Takeda, Y. Yoshida, N. Ota, S. Hayashi, S. Watanabe, A. Jujo, S. Iwata, H. Sato, C. Hu, H. Takahashi, H. Odaka, T. Tamba, K. Taniguchi
Temperature Dependence Of Gas X-Ray Detectors Onboard The 6u Cubesat X-Ray Observatory Ninjasat., Amira Aoyama, T. Tamagawa, T. Enoto, T. Kitaguchi, Y. Kato, T. Mihara, W. Iwakiri, M. Numazawa, Y. Zhou, K. Uchiyama, T. Takeda, Y. Yoshida, N. Ota, S. Hayashi, S. Watanabe, A. Jujo, S. Iwata, H. Sato, C. Hu, H. Takahashi, H. Odaka, T. Tamba, K. Taniguchi
Small Satellite Conference
We report the temperature dependence of Gas Multiplier Counters (GMCs) onboard the 6U CubeSat X-ray observatory NinjaSat.The detector performance of GMC depends on the temperature. The temperature dependence of the gain was calibrated for the detector response function in orbit using data from the Crab Nebula. The fit results using the function created improved the ratio of the fit curve to the data from 12% to 4% before and after gain correction.
Evaluation Of Spectral Cnnjpeg Adaptive Compression On The Stp-H7-Caspr Platform, Diego Wildenstein, Tyler Garrett, Evan Gretok, Seth Roffe, Alan D. George
Evaluation Of Spectral Cnnjpeg Adaptive Compression On The Stp-H7-Caspr Platform, Diego Wildenstein, Tyler Garrett, Evan Gretok, Seth Roffe, Alan D. George
Small Satellite Conference
Many space-sensing platforms are capable of producing vast amounts of sensor data. While having additional data can further science goals, it also introduces the problems of storage and transfer. Space platforms have limited storage resources and transmission bandwidth. As such, data compression is a vital step to make the most efficient use of onboard resources. Sensors such as multispectral imagers can capture many times the amount of data of traditional visual sensors, posing difficulties for onboard storage and processing of the data. Spectral CNNJPEG is a state-of-the-art adaptive compression algorithm for multispectral and hyperspectral-imaging sensors. This algorithm has been previously …
Commissioning Plans For The Pandora Smallsat: A Mission To Quantify Stellar Contamination Of Exoplanet Transmission Spectra, Lindsey Wiser, Jessie Dotson, Thomas Greene, Thomas Barclay, Knicole Colon, Christina Hedges, Ben Hord, Aishwarya Iyer, Elisa Quintana, Rae Holcomb, Trevor Foote, Jordan Karburn
Commissioning Plans For The Pandora Smallsat: A Mission To Quantify Stellar Contamination Of Exoplanet Transmission Spectra, Lindsey Wiser, Jessie Dotson, Thomas Greene, Thomas Barclay, Knicole Colon, Christina Hedges, Ben Hord, Aishwarya Iyer, Elisa Quintana, Rae Holcomb, Trevor Foote, Jordan Karburn
Small Satellite Conference
Pandora is a SmallSat mission designed to observe exoplanet atmospheres and stellar activity. Funded by the NASA Science Mission Directorate (SMD) Astrophysics Division through the Pioneers program, Pandora is a collaboration between NASA centers Goddard and Ames, the Lawrence Livermore National Laboratory, the University of Arizona, and other scientific institutions. Pandora will survey at least 20 transiting exoplanets during one year of science operations, obtaining a long baseline of simultaneous visible-light photometric and near-IR spectroscopic observations. These observations will be used to quantify and correct for stellar contamination of exoplanet transmission spectra due to spots and faculae on host stars. …
Development Of A Reaction Wheel Testbed With Object Tracking, Abigail Jocelyn Romero, Harvey Mallard Perkins, Stephen Thiam-Choy Kwok-Choon
Development Of A Reaction Wheel Testbed With Object Tracking, Abigail Jocelyn Romero, Harvey Mallard Perkins, Stephen Thiam-Choy Kwok-Choon
Small Satellite Conference
This paper discusses the design, fabrication, and testing of a single axis reaction wheel testbed with optical object tracking. Reaction wheels enable satellites to control their attitude. This system can autonomously correct its attitude about a single axis and track an external object using an on-board camera. Tests were performed to calibrate the system and drive further iteration in the design. This system is intended for research and educational applications, including exploring satellite attitude control with aspects of hardware and software integration. Future work includes refinement of the object tracking algorithm and state estimation system to provide for more robust …
Propulsion System Design And Sensitivity Analysis Of Sub 10cm Debris Detection Cubesat Mission, Mirza Talha Baig, Nicholas Crisp, Despina Ioannide
Propulsion System Design And Sensitivity Analysis Of Sub 10cm Debris Detection Cubesat Mission, Mirza Talha Baig, Nicholas Crisp, Despina Ioannide
Small Satellite Conference
Low Earth Orbit (LEO) satellites which are significant to global communication networks, face escalating collision risks from debris smaller than 10 cm. This risk has significantly increased by expanding satellite constellations like Starlink. Bob Sat is a small satellite(cube sat) conceptual design for detecting sub 10 cm debris for which a concept tradeoff was used to choose concept 1. This research introduces the propulsion system design for Bob Sat equipped with 36 JRT laser sensors for enhanced debris detection, crucial for collision avoidance. We detail a strategic mission plan deploying the satellite in circular orbits at various altitudes ranging from …
Preliminary Design Of A 3d Printing System For Creating Infinitely Large Structures In Space, Stephen Timperley, Grant Stec, Daniel Miller
Preliminary Design Of A 3d Printing System For Creating Infinitely Large Structures In Space, Stephen Timperley, Grant Stec, Daniel Miller
Small Satellite Conference
As interest in the space environment grows, the demand for larger and more capable space systems will follow. A possible solution to fill this demand is additive manufacturing in the form of 3D printing. This paper showcases a working preliminary system to 3D print large structures in space from a small satellite. This is achieved by replacing the normal Z axis control of a conventional CoreXY fused deposition modeling (FDM) 3D printer with a system to move along an infinitely extendable printed track. Having the ability to print and then move along this track creates a cycle of printing and …