Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (16178)
- Physical Sciences and Mathematics (7941)
- Social and Behavioral Sciences (5493)
- Engineering (5444)
- Education (3920)
-
- Environmental Sciences (2957)
- Biology (2708)
- Plant Sciences (2657)
- Agriculture (2332)
- Arts and Humanities (2309)
- Civil and Environmental Engineering (2083)
- Physics (1829)
- Animal Sciences (1810)
- Ecology and Evolutionary Biology (1587)
- Earth Sciences (1564)
- Psychology (1409)
- Entomology (1317)
- Business (1261)
- Forest Sciences (1214)
- Food Science (1100)
- Medicine and Health Sciences (1071)
- Water Resource Management (822)
- Sociology (771)
- Library and Information Science (736)
- Aerospace Engineering (693)
- Nutrition (650)
- Horticulture (626)
- Economics (608)
- Mathematics (527)
- Mechanical Engineering (514)
- Keyword
-
- Utah State University (2509)
- Utah (1832)
- Newspaper (1807)
- USU (1574)
- Minutes (1089)
-
- Utah State University Extension (1083)
- Faculty senate (1076)
- The Utah Statesman (956)
- Statesman (937)
- Student Life (903)
- Agenda (861)
- Educational Policies Committee (839)
- USU Extension (742)
- Utah Agricultural College (717)
- Usu (482)
- Agriculture (451)
- Scanning electron microscopy (447)
- Education (394)
- Design (357)
- Position (354)
- Teacher (339)
- Executive committee (338)
- Management (338)
- UWRL (330)
- Program Proposals (316)
- Family (308)
- Instructor (302)
- Horticulture (300)
- Water (290)
- Regents (280)
- Publication Year
- Publication
-
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (8859)
- Small Satellite Conference (4614)
- All Current Publications (2535)
- The Utah Statesman (1878)
- All Graduate Plan B and other Reports, Spring 1920 to Spring 2023 (1671)
-
- Student Research Symposium (1516)
- Scanning Microscopy (1416)
- Educational Policies Committee (1330)
- Undergraduate Honors Capstone Projects (1091)
- All Archived Publications (1075)
- Aspen Bibliography (922)
- All Graduate Theses and Dissertations, Fall 2023 to Present (858)
- Human–Wildlife Interactions (846)
- Utah Space Grant Consortium (834)
- Faculty Senate & Faculty Senate Executive Committee (833)
- Blog Posts (791)
- Wildlife Damage Management Conference (764)
- Biology (697)
- All Physics Faculty Publications (658)
- Reports (590)
- Wildland Resources Faculty Publications (584)
- USU Student Folklore Fieldwork (573)
- The Characterization and Radiometric Calibration for Remote Sensing Annual Meeting (CALCON) (544)
- Natural Resources and Environmental Issues (504)
- Applications for Staff Employments Faculty, Student and Graduate (484)
- All U.S. Government Documents (Utah Regional Depository) (469)
- College of Engineering News (466)
- Civil and Environmental Engineering Faculty Publications (461)
- Economic Research Institute Study Papers (461)
- Space Dynamics Laboratory Publications (394)
- Publication Type
Articles 3721 - 3750 of 57378
Full-Text Articles in Entire DC Network
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), …
Attitude Control Development Of The Agu Remote Innovative Cubesat Alert System -2, Chisaki Iwanaga, Takanori Sakamoto, Motoko Serino, Yuki Tsuji, Tomoya Ushimaru, Nao Urakabe, Hiroki Kato, Keiju Asano, Yoshihiro Takgi, Kazumasa Hiroshi, Shion Nojima, Hayato Mabuchi, Shuntaro Morikawa, Teruaki Enoto
Attitude Control Development Of The Agu Remote Innovative Cubesat Alert System -2, Chisaki Iwanaga, Takanori Sakamoto, Motoko Serino, Yuki Tsuji, Tomoya Ushimaru, Nao Urakabe, Hiroki Kato, Keiju Asano, Yoshihiro Takgi, Kazumasa Hiroshi, Shion Nojima, Hayato Mabuchi, Shuntaro Morikawa, Teruaki Enoto
Small Satellite Conference
AGU Remote Innovative CubeSat Alert system -2 (ARICA-2) is the 2U CubeSat for demonstrating the real-time alert system of transient astronomical sources using commercial satellite network services. 1U CubeSat ARICA, which has same mission goals as ARICA-2, was launched in 2021. However, it has never successfully transmitted or received data to date. The lack of attitude control, power balance issues and short communication time with commercial satellites are considered as the causes of the defects. With these considerations, we started to develop ARICA-2 as a re-challenging mission of ARICA. Since attitude control is essential for satellite operation and mission accomplishment, …
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 …
Contact Conduction Fidelity Within Small Satellite System-Level Thermal Analysis, Benjamin Pumphrey, Charles Jackson Bradford, Sydney Whilden, Deepak R. Mishra
Contact Conduction Fidelity Within Small Satellite System-Level Thermal Analysis, Benjamin Pumphrey, Charles Jackson Bradford, Sydney Whilden, Deepak R. Mishra
Small Satellite Conference
Defining contact conduction coefficients is crucial for a system-level thermal analysis on satellites. Thermal analysis must be quick and accurate for many small satellite missions to ensure components stay within operating temperatures. Contact conduction, influenced by surface finish, roughness, anisotropy, and pressure distribution, is a complex research area. The challenge is to determine an 'acceptable' level of fidelity for conduction coefficients under tight timelines. How much do simplifications affect heat distribution in a thermal model?
Automation Of The G/T Characterization Measurements For Dss-17, Mila Layne Shearer, Emily Ballantyne, Emily Walter, Benjamin Malphrus
Automation Of The G/T Characterization Measurements For Dss-17, Mila Layne Shearer, Emily Ballantyne, Emily Walter, Benjamin Malphrus
Small Satellite Conference
Gain over System Noise Temperature (G/T) is a metric commonly used in radio frequency (RF) engineering to measure the performance of an antenna against the amount of noise contributing to the receiver's signal caused by its internal hardware. While the gain of an antenna is typically inferred geometrically by comparing signal strength of a given antenna to that of an isotropic antenna, system noise temperature must be found experimentally by calibrating the antenna to a black body radiator (in this case, the moon), and comparing the measured power on the black body to that when the antenna is aimed at …
An Electrical Power System Development For Vertecs: A 6u Cubesat Mission For Observation The Extragalactic Background Light, Chinathip Narongphun, Shunsuke Nakagawa, Hari Ram Shrestha, Victor Hugo Schulz, Rodrigo Cordova, Necmi Cihan Örger, Kei Sano, Takao Nakagawa
An Electrical Power System Development For Vertecs: A 6u Cubesat Mission For Observation The Extragalactic Background Light, Chinathip Narongphun, Shunsuke Nakagawa, Hari Ram Shrestha, Victor Hugo Schulz, Rodrigo Cordova, Necmi Cihan Örger, Kei Sano, Takao Nakagawa
Small Satellite Conference
This paper focuses on an overview of the electrical power system (EPS) implemented in the Visible extragalactic background radiation exploration by CubeSat (VERTECS), a 6U CubeSat developed by a collaboration of the Kyushu institute of technology (Kyutech), JAXA, universities, and companies. Its mission aims to reveal the star-formation history of the universe through observations of the extragalactic background light (EBL) in visible wavelength. This article presents the three primary functions of the EPS in VERTECS design (i.e., power source, energy storage, and power control) in detail, as well as the verification of the system by the breadboard model (BBM). Numerous …
Automated Performance Testing To Maximize The Reliability Of Ground Stations, Kerry Clapham, Chris Bull, Robin Mcneil, Chris Hann
Automated Performance Testing To Maximize The Reliability Of Ground Stations, Kerry Clapham, Chris Bull, Robin Mcneil, Chris Hann
Small Satellite Conference
Satellite ground station link failures are disruptive to space operations and are to be avoided. Critically, it may not be obvious if a link failure is caused by the spacecraft, or by the ground station, especially during LEOP. We present a scheduler to automate periodic calibration passes on known spacecraft and conduct Y-Factor G/T measurements when the ground station would otherwise be idle. Automatically scheduling, logging and comparing pass metrics against nominal values alerts us to any system performance deterioration. Such automated testing has been successfully used to identify antenna faults and temporary obstructions. We also discuss the usefulness of …
Feasibility Study Of Technology Demonstration Mission For Integrated Attitude-Orbit Control Of Solar Sail, Yusuke Arai, Yusei Kawaguchi, Toshihiro Chujo, Hironobu Sugano, Ryuki Mikai, Hideaki Hideaki, Riko Tachikawa, Yasuyuki Miyazaki, Kei Watanabe, Takashi Tomura, Gen Nakayama, Hideo Yoshida, Ryo Saito, Sora Masaki, Kenichiro Takahashi, Yuki Amaki, Moe Yasuda, Daiki Kobayashi, Daiki Yoshimura, Keito Otsubo, Hiroyuki Kobayashi, Tsubasa Ozawa, Yuki Takao, Hiroki Nakanishi, Yoichi Yatsu, Masanori Matsushita, Ahmed Kiyoshi Sugihara, Osamu Mori, Momoko Fukunaga, Hiroyuki Ono
Feasibility Study Of Technology Demonstration Mission For Integrated Attitude-Orbit Control Of Solar Sail, Yusuke Arai, Yusei Kawaguchi, Toshihiro Chujo, Hironobu Sugano, Ryuki Mikai, Hideaki Hideaki, Riko Tachikawa, Yasuyuki Miyazaki, Kei Watanabe, Takashi Tomura, Gen Nakayama, Hideo Yoshida, Ryo Saito, Sora Masaki, Kenichiro Takahashi, Yuki Amaki, Moe Yasuda, Daiki Kobayashi, Daiki Yoshimura, Keito Otsubo, Hiroyuki Kobayashi, Tsubasa Ozawa, Yuki Takao, Hiroki Nakanishi, Yoichi Yatsu, Masanori Matsushita, Ahmed Kiyoshi Sugihara, Osamu Mori, Momoko Fukunaga, Hiroyuki Ono
Small Satellite Conference
We are developing a micro solar sail called "PIERIS". The purpose of this project is to demonstrate the following two world-first technologies in Low Earth Orbit. The first technology is to control the external torque with a single gimbal motor. It will be possible to achieve a completely propellant-free Integrated Attitude-Orbit Control. The second technology is a sail structure that guarantees the accuracy of the Pyramid-Shaped sail membrane shape and reduces disturbance torque caused by membrane surface deformation. This project has been selected for the Feasibility-Study phase of the JAXA Small Satellite Rush Program and is scheduled for launch in …
An Exploration Of Wood-Based Cube Satellite Chassis, Sebastian Timbal, Kevin L. Simmons
An Exploration Of Wood-Based Cube Satellite Chassis, Sebastian Timbal, Kevin L. Simmons
Small Satellite Conference
• Cubesat chassis are typically constructed using Aluminum alloys. • Aluminum-based chassis are considerably heavy when compared to chassis constructed with alternative materials. • Wood may prove to be a far more lightweight and cost-effective material for constructing CubeSat chassis.
Femtosats In Zero-G Iss Experiment, Matthew Hurford, Joshua Umansky-Castro, Andrew Filo
Femtosats In Zero-G Iss Experiment, Matthew Hurford, Joshua Umansky-Castro, Andrew Filo
Small Satellite Conference
The FemtoSats in Zero-G investigation was an ISS experiment in which a handheld deployer ejected four purely mechanical FemtoSats within the ISS. Femto Satellites are centimeter-scale spacecraft that weigh less than 100 grams. The FemtoSats and deployer were made on the Additive Manufacturing Facility (AMF) onboard the ISS on August 28th, 2017, and March 29th, 2017, respectively.
Modular Cubesat Structure Enabling Rapid Payload Integration And Delivery, James Helmich, Michael Lembeck
Modular Cubesat Structure Enabling Rapid Payload Integration And Delivery, James Helmich, Michael Lembeck
Small Satellite Conference
The CubeSat assembly, integration, and test (AIT) process is typically lengthy and serial in its execution. This introduces serious programmatic and schedule risks to many CubeSat missions. The modular structure presented here is aimed at mitigating these risks by providing a novel, "plug and play" approach where major system elements are compartmentalized and the critical path for avionics and payload is parallelized. This allows for a parallelized workflow throughout the AIT process, which can accelerate final integration. Breaking down the system into smaller, more manageable components also aides in the identification and isolation of any anomalies that arise during the …
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.
Open-Source Cubesat Solar Panels: Design, Assembly, Testing, And On-Orbit Demonstration, Nicholas J. Sorensen, Erik F. Halliwell
Open-Source Cubesat Solar Panels: Design, Assembly, Testing, And On-Orbit Demonstration, Nicholas J. Sorensen, Erik F. Halliwell
Small Satellite Conference
Cube satellites, or CubeSats, are small satellites commonly used to perform Earth imaging and on-orbit scientific experiments. CubeSats are often powered using expensive, inflexible commercial-off-the-shelf solar panels, largely due to a lack of flight-qualified open-source alternatives. Here, we describe the design of customizable, deployable solar panels, offering an open-source, cost-effective alternative. Towards a fully open-source CubeSat, our designs have mission-tailored power generation capabilities and simple electrical and mechanical integration. The solar panel designs were demonstrated on-orbit on three satellites in the Northern SPIRIT constellation and will be on AlbertaSat’s Ex-Alta 3 satellite, which will launch in 2025. The design files, …
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 …
Binar Space Program: Mission 2 Update, Kyle Mcmullan, Fergus Downey, Jacob Cook, Nic Rogers, Chelsea Tay, Hans Benz, Tristan Ward, Daniel Turner, Stuart Buchan, Daniel Busan, Benjamin Hartig, Martin Towner, Robert Howie, Phil Bland, Jonathan Paxman
Binar Space Program: Mission 2 Update, Kyle Mcmullan, Fergus Downey, Jacob Cook, Nic Rogers, Chelsea Tay, Hans Benz, Tristan Ward, Daniel Turner, Stuart Buchan, Daniel Busan, Benjamin Hartig, Martin Towner, Robert Howie, Phil Bland, Jonathan Paxman
Small Satellite Conference
The Binar Space Program's (BSP) second mission consists of three 1U CubeSats scheduled for launch in August of 2024. Following the partial success of the BSP's first mission, Binar-1, many technological improvements have been made to the Binar 1U platform. These improvements enable Binar 2, 3, and 4 to carry 0.5U of payload, which is being used by the Australian Commonwealth Scientific and Industry Research Organization (CSIRO) to test two new radiation shielding materials developed in Australia. In addition to the primary payload, each CubeSat will fly three different communication systems, new deployable solar arrays and carry operating software that …
[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 …
Design And Development Of 2u Spirone Cubesat For Verification Of Navigation Signal Generator In Leo Environment And Marine Plastic Observation, Sunhwan Gwon, Pilkyo Jeong, Hyewon Park, Ah-Yeon Park, Minji Kim, Kihyun Kim, Hyewon Jo, Hyung-Goo Lim, Ina Jeong, Ahn Doeun, Hyunjung Kim, Lee Hoonseok, O-Jong Kim
Design And Development Of 2u Spirone Cubesat For Verification Of Navigation Signal Generator In Leo Environment And Marine Plastic Observation, Sunhwan Gwon, Pilkyo Jeong, Hyewon Park, Ah-Yeon Park, Minji Kim, Kihyun Kim, Hyewon Jo, Hyung-Goo Lim, Ina Jeong, Ahn Doeun, Hyunjung Kim, Lee Hoonseok, O-Jong Kim
Small Satellite Conference
This study aims to undertake the development of the SPIRONE Cube-satellite. The technical mission involves the development and validation of an S-band navigation signal generator for Low Earth Orbit (LEO), and the scientific mission is to observe marine plastics using Long-Wave Infrared (LWIR) and Short-Wave Infrared (SWIR) cameras. Traditional satellite navigation systems operate at medium Earth orbits around 20,000 km, where signals can weaken and become vulnerable to interference, impacting air navigation, shipping, and autonomous vehicles, potentially causing severe accidents. To address this, the project aims to explore LEO-based navigation by operating CubeSats in LEO to collect experimental data and …
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 …
Te Pūnaha Ātea -1 (Tpa-1), A Capability Development And Validation Mission From New Zealand, Ben Taylor, Vernon Lewis, Jason Shore, Mahima Seth, Annalisa Tresoldi, Mattia Longato, Guglielmo Aglietti, Chris Jackson
Te Pūnaha Ātea -1 (Tpa-1), A Capability Development And Validation Mission From New Zealand, Ben Taylor, Vernon Lewis, Jason Shore, Mahima Seth, Annalisa Tresoldi, Mattia Longato, Guglielmo Aglietti, Chris Jackson
Small Satellite Conference
We report an overview of the Te Pūnaha Ātea -1 (TPA-1) 3U CubeSat and its payloads, which is manifested for an upcoming launch. Within the context of the New Zealand space sector, the mission is aimed at developing and validating capability in mission delivery and operations through in-house processes and infrastructure. The mission includes four payloads comprising: a deployable/stowable inspection boom, an integrated Raspberry Pi based Earth observation and deployables imager, thermal monitoring payload and miniaturised dragsail for end-of-life disposal. The first mission by Te Pūnaha Ātea - Space Institute represents an important step along the path to becoming the …
Vertecs: 6u Cubesat Mission To Study Star-Formation History By Observation Of Visible Extragalactic Background Light, Kei Sano, Rodrigo Cordova, Victor Hugo Schulz, Pooja Lepcha, Necmi Cihan Örger, Daisuke Nakayama, Joseph Ofosu, Reynel Josué Galindo Rosales, Pema Zangmo, Ezra Fielding, Keenan Chatar, Yukihisa Otani, Hisataka Kawasaki, Bastien Morelle, John Paul Almonte, Shunsuke Nakagawa, Yuto Tome, Shohei Karaki, Chinathip Narongphun, Hari Ram Shrestha, Marco Rosa, David Dai, Wenceslao Bejarano, Akihiro Ikeda, Rin Sato, Yusuke Iwaki, Kentaro Hayashida, Hiroki Miyagawa, Masahiro Nishioka, Kana Kurosaki, Isami Kato, Mengu Cho, Hirokazu Masui, Tetsuhito Fuse, Eyoas Areda, Kentaro Kitamura, Mariko Teramoto, Takashi Yamauchi, Ryo Hashimoto, Emino Fukumoto, Zamba Leonel, Arisa Oho, Shoki Yabumoto, Hayato Masuno, Chisato Arakawa, Kouta Miyamoto, Takao Nakagawa, Kohji Takimoto, Aoi Takahashi, Hideo Matsuhara, Umi Enokidani, Hayato Tanaka, Naoki Isobe, Yasuyuki Miyazaki, Ryu Funase, Hajime Kawahara, Keiichi Hirako, Shuji Matsuura, Yuki Hirose, Akimasa Ojika, Akane Tsumoto, Taiko Iwaki, Yuki Ohara, Satoshi Ikari, Kohji Tsumura, Ichiro Jikuya, Takehiko Wada, Yoichi Yatsu, Yoshihide Aoyanagi
Vertecs: 6u Cubesat Mission To Study Star-Formation History By Observation Of Visible Extragalactic Background Light, Kei Sano, Rodrigo Cordova, Victor Hugo Schulz, Pooja Lepcha, Necmi Cihan Örger, Daisuke Nakayama, Joseph Ofosu, Reynel Josué Galindo Rosales, Pema Zangmo, Ezra Fielding, Keenan Chatar, Yukihisa Otani, Hisataka Kawasaki, Bastien Morelle, John Paul Almonte, Shunsuke Nakagawa, Yuto Tome, Shohei Karaki, Chinathip Narongphun, Hari Ram Shrestha, Marco Rosa, David Dai, Wenceslao Bejarano, Akihiro Ikeda, Rin Sato, Yusuke Iwaki, Kentaro Hayashida, Hiroki Miyagawa, Masahiro Nishioka, Kana Kurosaki, Isami Kato, Mengu Cho, Hirokazu Masui, Tetsuhito Fuse, Eyoas Areda, Kentaro Kitamura, Mariko Teramoto, Takashi Yamauchi, Ryo Hashimoto, Emino Fukumoto, Zamba Leonel, Arisa Oho, Shoki Yabumoto, Hayato Masuno, Chisato Arakawa, Kouta Miyamoto, Takao Nakagawa, Kohji Takimoto, Aoi Takahashi, Hideo Matsuhara, Umi Enokidani, Hayato Tanaka, Naoki Isobe, Yasuyuki Miyazaki, Ryu Funase, Hajime Kawahara, Keiichi Hirako, Shuji Matsuura, Yuki Hirose, Akimasa Ojika, Akane Tsumoto, Taiko Iwaki, Yuki Ohara, Satoshi Ikari, Kohji Tsumura, Ichiro Jikuya, Takehiko Wada, Yoichi Yatsu, Yoshihide Aoyanagi
Small Satellite Conference
We describe an astronomical 6U CubeSat mission VERTECS (Visible Extragalactic background RadiaTion Exploration by CubeSat). The scientific purpose of VERTECS is to reveal star-formation history of the universe by observation of the extragalactic background light (EBL) in visible wavelengths. Earlier observations by sounding rockets and infrared astronomical satellites have shown that the near-infrared EBL is several times brighter than the integrated light of known galaxies. As candidates for the excess light, first-generation stars in the early universe or low-redshift intra-halo light have been proposed, but it has not been concluded. Since these objects are expected to show different emission spectra …
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 …
Design, Characterization, And Testing Of Hert, A Miniaturized High-Energy-Resolution Relativistic Electron Telescope For Cubesats, Hong Zhao, Will Teague, Lauren Blum, Xinlin Li, Jared Cantilina, Will Edgar, Tyler Bishop, Patricio Ramos, Skyler Krantz
Design, Characterization, And Testing Of Hert, A Miniaturized High-Energy-Resolution Relativistic Electron Telescope For Cubesats, Hong Zhao, Will Teague, Lauren Blum, Xinlin Li, Jared Cantilina, Will Edgar, Tyler Bishop, Patricio Ramos, Skyler Krantz
Small Satellite Conference
Earth's outer radiation belt is filled with relativistic electrons in the MeV energy range and above. These highly energetic electrons pose significant threats to avionics and humans in space, and understanding their dynamics has been an urgent need. As CubeSats increasingly play a more prominent role by executing missions at a far lower cost, they become ideal vehicles for conducting such scientific investigations. The miniaturized High-Energy-Resolution relativistic electron Telescope (HERT) is a compact telescope designed for a 6U CubeSat mission in a geosynchronous transfer orbit (GTO). HERT aims to provide high-energy-resolution (dE/E < 12%) measurements of 1 - 7 MeV electrons at GTO. These measurements will enable a novel method to differentiate the two main acceleration mechanisms, inward radial transport and local acceleration, and solve the longstanding question of how electrons in the Earth's radiation belts are accelerated to relativistic energies. Building upon the heritage of the Relativistic Electron Proton Telescope (REPT) instrument on the Van Allen Probes and the REPTile-2 instrument on CIRBE, HERT iS comprised of a stack of nine solid-state silicon detectors in a telescope configuration with a beryllium window to block lower energy electrons and a tantalum collimator to enforce the required FOV (33°). The instrument responses were investigated using Geant4 simulations, and the results project HERT to have a nominal energy resolution of ~5% for 1.5 - 3 Me V electrons and < ~12% for other core energy channels. Radiation testing has been conducted with a Cobalt-60 source, and the results suggest that HERT electronics can sustain a total ionizing dose of ~65 krad, meeting the instrument performance requirement in a GTO. Random vibration simulations have also been conducted, which suggest that HERT's reaction stresses and displacements are within a significant safety factor relative to yield strength from each component. Bench testing with muons and an SR-90/Y-90 radioactive source is ongoing to test HERT's performance. With a high energy resolution and a miniaturized design, HERT will greatly advance the quantitative understanding of relativistic electron acceleration in the outer radiation belt.
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 …
Big Red Sat-1: Mission Overview And Future Opportunities For Perovskites In Low Earth Orbit, Walker S. Arce, Vince Orsi, Nick Wayman, Joel Murch-Shafer, Karen Stelling, Robert Schmidt, Kelly Schutt, Joseph M. Luther, Hadi Afshari, Ian Sellers
Big Red Sat-1: Mission Overview And Future Opportunities For Perovskites In Low Earth Orbit, Walker S. Arce, Vince Orsi, Nick Wayman, Joel Murch-Shafer, Karen Stelling, Robert Schmidt, Kelly Schutt, Joseph M. Luther, Hadi Afshari, Ian Sellers
Small Satellite Conference
Perovskite solar cells are an emerging technology that holds the promise of reducing the size and weight of solar panels on satellites. While many research laboratories have produced perovskite solar cells and characterized their performance in laboratory conditions, few have endeavored to launch them into space. The Big Red Sat-1 (BRS-1) is one such satellite, designed to incorporate three different perovskite solar cell architectures along with custom curve tracing instrumentation for launch into low earth orbit through NASA's CubeSat Launch Initiative. The curve tracer is realized using a precision resistor ladder with high quality current and voltage measurements. Perovskite solar …
Development And Performance Of The Engineering Model Of Arica-2, Takanori Sakamoto, Motoko Serino, Yuki Tsuji, Tomoya Ushimaru, Nao Urakabe, Hiroki Kato, Keiju Asano, Chisaki Iwanaga, Yoshihiro Takagi, Kazumasa Hiroshi, Shuntaro Morikawa, Shion Nojima, Hayato Mabuchi, Teruaki Enoto
Development And Performance Of The Engineering Model Of Arica-2, Takanori Sakamoto, Motoko Serino, Yuki Tsuji, Tomoya Ushimaru, Nao Urakabe, Hiroki Kato, Keiju Asano, Chisaki Iwanaga, Yoshihiro Takagi, Kazumasa Hiroshi, Shuntaro Morikawa, Shion Nojima, Hayato Mabuchi, Teruaki Enoto
Small Satellite Conference
We present the status of the engineering model (EM) of 2U Cubesat, AGU Remote Innovative Cubesat Alert system-2 (ARICA-2). The main goal of ARICA-2 is to demonstrate the real-time alert system of transient astronomical sources, such as gamma-ray bursts (GRBs), using commercial satellite network services such as Iridium and Globalstar. In parallel, we have a dedicated amateur mission to provide a "store and forward" capability for communication among amateurs. The GRB alert and the housekeeping data are also broadcast through the amateur CW transmitter. ARICA-2 was selected as one of the JAXA Innovative Satellite Technology Demonstration-4 projects in 2022 and …