GEOScan: A global, real-time geoscience facility

Dyrud, L. P.; Fentzke, J. T.; Bust, G. S.; Erlandson, Bob; Whitely, Sally; Bauer, Brian; Arnold, Steve; Selva, Daniel; Cahoy, Kerri; Bishop, Rebecca; Wiscombe, W. J.; Lorentz, Steven R.; Slagowski, Stefan; Gunter, B. C.; Trenberth, Kevin E.

doi:10.1109/aero.2013.6497141

Cited by 10 publications

(3 citation statements)

References 9 publications

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“…A hybrid architecture that combines the lower cost systems offered by NewSpace solutions with traditional missions potentially provides unique insights beyond what individual satellite systems are currently able to provide alone (Dyrud et al, 2013;NASEM, 2022). As part of our objective to assess the potential advantages and disadvantages of NewSpace versus traditional systems, we used rough order of magnitude (ROM) costing techniques to develop a high-level case study that compared candidate NewSpace and traditional missions for the global measurement of precipitation.…”

Section: Architecture Considerationsmentioning

confidence: 99%

Toward a US Framework for Continuity of Satellite Observations of Earth's Climate and for Supporting Societal Resilience

2024

Earth's Future

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There is growing urgency for improved public and commercial services to support a resilient, secure, and thriving United States (US) in the face of mounting decision‐support needs for environmental stewardship and hazard response, as well as for climate change adaptation and mitigation. Sustained space‐based Earth observations are critical infrastructure to support the delivery of science and decision‐support information with local, national, and global utility. This is reflected in part through the United States' sustained support of a suite of weather and land‐imaging satellites. However, outside of these two areas, the US lacks an overarching, systematic plan or framework to identify, prioritize, fund, and implement sustained space‐based Earth observations to meet the Nation's full range of needs for science, government policy, and societal support. To aid and accelerate the discussion on our nation's needs, challenges and opportunities associated with sustained critical space‐based Earth observations, the Keck Institute for Space Studies (KISS) sponsored a multi‐week think‐tank study to offer ways forward. Based on this study, the KISS study team suggests the establishment of a robust coordination framework to help address US needs for sustained Earth observations. This coordination framework could account for: (a) approaches to identify and prioritize satellite observations needed to meet US needs for science and services, (b) the rapidly evolving landscape of space‐based Earth viewing architecture options and technology improvements with increasing opportunities and lower cost access to space, and (c) the technical and programmatic underpinnings required for proper and comprehensive data stewardship to support a wide range of research and public services.

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Section: Architecture Considerationsmentioning

confidence: 99%

Toward a US Framework for Continuity of Satellite Observations of Earth's Climate and for Supporting Societal Resilience

2024

Earth's Future

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“…Nanosatellites have a wide range of applications, from interplanetary missions to space observations and communications [5][6][7]. A special place is occupied by remote sensing of Earth (ERS) [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

A High Gain Deployable L/S Band Conical Helix Antenna Integrated With Optical System for Earth Observation CubeSats

et al. 2023

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In this study, a new spiral dual-band antenna integrated with an optical system for a small CubeSat spacecraft was proposed. It is challenging to design an antenna with a limited space on a CubeSat platform. To improve the space utilization, an antenna was designed based on the concept of not occupying the sides of the CubeSat. A feature of the proposed antenna system is its compactness, dual-band operation in the L-and S-bands, and possibility of integration with spacecraft cameras. As a result of the study, reflection coefficients of -18 dB and -23 dB and gain of 6.8 dBi and 7.4 dBi, respectively, were achieved at resonant frequencies of 1.7 GHz and 2.45 GHz. The conical shape of the spiral antenna allows the optical system to increase the coverage area, and a simple deployment system with feedback ensures the mission safety. These properties make the proposed antenna suitable for CubeSat systems.INDEX TERMS CubeSat antenna, dual-band antenna, Earth observation, helix antenna

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“…Constellations of small satellites have been recognised as an enabling architecture for a variety of new mission types of commercial, scientific, and military significance (1–3). Due to their lower unit cost of development and manufacture, these systems can be launched in greater numbers than traditional satellites, and in constellations can perform many simultaneous and distributed measurements or observations of interesting dynamic or global phenomena (4,5).…”

Section: Introductionmentioning

confidence: 99%

An integrated design methodology for the deployment of constellations of small satellites

2019

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A growing interest in constellations of small satellites has recently emerged due to the increasing capability of these platforms and their reduced time and cost of development. However, in the absence of dedicated launch services for these systems, alternative methods for the deployment of these constellations must be considered which can take advantage of the availability of secondary-payload launch opportunities. Furthermore, a means of exploring the effects and tradeoffs in corresponding system architectures is required. This paper presents a methodology to integrate the deployment of constellations of small satellites into the wider design process for these systems. Using a method of design-space exploration, enhanced understanding of the tradespace is supported, whilst identification of system designs for development is enabled by the application of an optimisation process. To demonstrate the method, a simplified analysis framework and a multiobjective genetic algorithm are implemented for three mission case-studies with differing application. The first two cases, modelled on existing constellations, indicate the benefits of design-space exploration, and possible savings which could be made in cost, system mass, or deployment time. The third case, based on a proposed Earth observation nanosatellite constellation, focuses on deployment following launch using a secondary-payload opportunity and demonstrates the breadth of feasible solutions which may not be considered if only point-designs are generated by a priori analysis. These results indicate that the presented method can support the development of future constellations of small satellites by improving the knowledge of different deployment strategies available during the early design phases and through enhanced exploration and identification of promising design alternatives.

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GEOScan: A global, real-time geoscience facility

Cited by 10 publications

References 9 publications

Toward a US Framework for Continuity of Satellite Observations of Earth's Climate and for Supporting Societal Resilience

Toward a US Framework for Continuity of Satellite Observations of Earth's Climate and for Supporting Societal Resilience

A High Gain Deployable L/S Band Conical Helix Antenna Integrated With Optical System for Earth Observation CubeSats

An integrated design methodology for the deployment of constellations of small satellites

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