CubeSat flight system development for enabling deep space science

Imken, Travis; Castillo‐Rogez, Julie; He, Yanzhang; Baker, John D.; Marinan, Anne

doi:10.1109/aero.2017.7943885

Cited by 22 publications

(9 citation statements)

References 4 publications

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“…QUEST would use a dual-string command and data handling architecture built around the Sphinx avionics system [93]. The Sphinx avionics system coordinates data transfer between the science instruments and spacecraft subsystems, data storage, and science and telemetry data downlink.…”

Section: Command and Data Handlingmentioning

confidence: 99%

“…A crucial trade that was made during the mission design period was the inclusion of the latest generation of JPL flight avionics (Sphinx processor [93]) for command and data handling, which allowed for continuous power savings of 33 W. The processor has been flight-qualified and delivered for three Class B missions (NEA Scout, Lunar Flashlight, and Peregrine), and would have 10 years of in-flight operations on these missions prior to QUEST PDR (03/2029). As QUEST is a Class A mission, we anticipate the potential for requalification of the Sphinx processor.…”

Section: Perceived Risk and Mitigation Strategymentioning

confidence: 99%

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QUEST: A New Frontiers Uranus orbiter mission concept study

et al. 2020

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: Command and Data Handlingmentioning

confidence: 99%

Section: Perceived Risk and Mitigation Strategymentioning

confidence: 99%

QUEST: A New Frontiers Uranus orbiter mission concept study

et al. 2020

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“…Accurate position and time estimates are important for a variety of smallsat missions. Examples of missions, which require high performance timekeeping, are deep space missions using one‐way ranging (Imken et al., 2017; Wallis et al., 2005; Weaver & Kantsiper, 2007), small satellite constellations functioning as sensor arrays for astronomy (Engelen et al., 2013; Rajan et al., 2015), low Earth orbit (LEO) constellations for Global Positioning System (GPS) augmentation and improved positioning (Ge et al., 2018; Reid et al., 2018), and Earth observation missions which require accurate position and time information for imagery and science data.…”

Section: Introductionmentioning

confidence: 99%

A low complexity smoothing algorithm for improved GPS point solutions on board LEO spacecraft

2021

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This paper describes a novel approach for reducing the kinematic position and time errors on a GPS receiver in low Earth orbit. For dual‐frequency GPS receivers, point solution errors are dominated by signal‐in‐space ranging errors, which introduce sharp discontinuities in the position and time estimates when GPS visibility changes. These discontinuities may be calculated and removed, greatly reducing the peaks of the errors, at the expense of introducing a slowly varying bias, which is estimated and removed. The paper gives a detailed description of the algorithm and illustrates its use on a GPS receiver using historical ephemerides. To demonstrate real‐world efficacy, GRACE‐FO observations are processed using the proposed approach. Real‐time results show the reduction of the time error standard deviation by 16% to 1.9ns and the reduction of the 3D RMS error by 17% to 1.06m. Maximum real‐time errors are reduced 26% and 32%, respectively. Delayed processing offers greater reductions of errors, near 40%.

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“…In Imken et al (2017), the current status of 6U Interplanetary CubeSat development at the Jet Propulsion Laboratory (JPL) is given. Critical hardware, such as data handling and communication systems have been developed as standard buses at JPL.…”

Section: Introductionmentioning

confidence: 99%

DISCUS – The Deep Interior Scanning CubeSat mission to a rubble pile near-Earth asteroid

Bambach

Deller

Vilenius

et al. 2018

Advances in Space Research

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We have performed an initial stage conceptual design study for the Deep Interior Scanning CubeSat (DIS-CUS), a tandem 6U CubeSat carrying a bistatic radar as the main payload. DISCUS will be operated either as an independent mission or accompanying a larger one. It is designed to determine the internal macroporosity of a 260-600 m diameter Near Earth Asteroid (NEA) from a few kilometers distance. The main goal will be to achieve a global penetration with a low-frequency signal as well as to analyze the scattering strength for various different penetration depths and measurement positions. Moreover, the measurements will be inverted through a computed radar tomography (CRT) approach. The scientific data provided by DISCUS would bring more knowledge of the internal configuration of rubble pile asteroids and their collisional evolution in the Solar System. It would also advance the design of future asteroid deflection concepts. We aim at a single-unit (1U) radar design equipped with a half-wavelength dipole antenna. The radar will utilize a stepped-frequency modulation technique the baseline of which was developed for ESA's technology projects GINGER and PIRA. The radar measurements will be used for CRT and shape reconstruction. The CubeSat will also be equipped with an optical camera system and laser altimeter to support navigation and shape reconstruction. We provide the details of the measurement methods to be applied along with the requirements derived of the known characteristics of rubble pile asteroids. Additionally, an initial design study of the platform and targets accessible within 20 lunar distances is presented.

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CubeSat flight system development for enabling deep space science

Cited by 22 publications

References 4 publications

QUEST: A New Frontiers Uranus orbiter mission concept study

QUEST: A New Frontiers Uranus orbiter mission concept study

A low complexity smoothing algorithm for improved GPS point solutions on board LEO spacecraft

DISCUS – The Deep Interior Scanning CubeSat mission to a rubble pile near-Earth asteroid

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