System design of a miniaturized distributed occulter/telescope for direct imaging of star vicinity

Kolmas, Jan; Banazadeh, Payam; Koenig, Adam W.; Macintosh, Bruce; D’Amico, Simone

doi:10.1109/aero.2016.7500783

Cited by 20 publications

(7 citation statements)

References 9 publications

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“…The past decade has seen major advances in starshade technology, including optical demonstrations and model validation, 2,3 mechanical configuration and deployment, 4 and formation flying. 5 Several mission proposals have shaped the architectural approach, including the New Worlds Observer, 6,7 THEIA, 8,9 the Occulting Ozone Observatory (O3), 10 the Exo-S Stand-Alone and Rendezvous Missions, 1,11 HabEx, 4,12,13 and the Earth-orbiting Remote Occulter 14 and Miniature Distributed Occulter Telescope 15,16 concepts.…”

Section: Introductionmentioning

confidence: 99%

Starshade Imaging Simulation Toolkit for Exoplanet Reconnaissance

Hildebrandt

Shaklan

Cady

et al. 2021

J. Astron. Telesc. Instrum. Syst.

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Starshade Imaging Simulation Toolkit for Exoplanet Reconnaissance (SISTER) is a versatile tool designed to provide accurate models of the images of exoplanet systems when observed with a starshade positioned to block the light from the host star. SISTER allows one to control a set of observational parameters including: (1) the starshade design, position, orientation, and glint properties; (2) the telescope and optical system pupil, aberrations, bandpass, and throughput including a detector model; (3) the exoplanetary system, including stellar distance and spectral type, parallax and proper motion, planet size, reflection properties, orbital parameters, and exozodiacal dust; and (4) background objects. Additionally, there is a substantial library of built-in plotting software added, but the simulations may be stored on disk and plotted with any other software. We describe SISTER's algorithms, its operational modules, and how it can be used to generate starshade optical simulations with a high degree of fidelity. We include some imaging examples. © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Introductionmentioning

confidence: 99%

Starshade Imaging Simulation Toolkit for Exoplanet Reconnaissance

Hildebrandt

Shaklan

Cady

et al. 2021

J. Astron. Telesc. Instrum. Syst.

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“…Distributed space systems (DSS) use multiple spacecraft to achieve goals that would be difficult or impossible to achieve with a monolithic spacecraft. The resulting breakthrough applications can be categorized in areas such as space infrastructure and development (eg, on‐orbit servicing and assembly), astronomy and astrophysics (eg, exoplanet imaging), and planetary and earth science (eg, synthetic aperture radar interferometry) to name a few. To accomplish these objectives, DSS require precise knowledge of both the absolute and relative orbits of each spacecraft in the system.…”

Section: Introductionmentioning

confidence: 99%

Distributed multi‐GNSS timing and localization for nanosatellites

Giralo

D’Amico

2019

NAVIGATION

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Recent advances in distribution and miniaturization among spacecraft and expansion of global navigation satellite systems (GNSS) motivate the Distributed Multi-GNSS Timing and Localization system. The DiGiTaL system is intended to provide nanosatellite swarms with unprecedented centimeter-level relative navigation accuracy in real time and nanosecond-level time synchronization through the integration of a multiconstellation GNSS receiver, a chipscale atomic clock, and an intersatellite link. This paper describes DiGiTaL's hardware and software design, architecture, and navigation software in detail.The swarming spacecraft are grouped into subsets, where differential GNSS is performed by a precise orbit determination module with integer ambiguity resolution in real time. The resulting precise orbits are then exchanged and fused by a swarm determination module, creating full-swarm knowledge. Finally, the DiGiTaL architecture is integrated into CubeSat avionics and tested with key hardware in the loop using Stanford's GNSS navigation testbed. For the first time, this paper shows the capability to perform centimeter-level precise relative navigation using commercial-off-the-shelf CubeSat hardware for spacecraft swarms.

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“…Distributed Space Systems (DSS) use multiple spacecraft to achieve goals that would be difficult or impossible to achieve with a monolithic spacecraft. The resulting breakthrough applications can be categorized in areas such as space infrastructure and development (e.g., on-orbit servicing and assembly [1]), astronomy and astrophysics (e.g., exoplanet imaging [2]), and planetary and earth science (e.g., synthetic aperture radar interferometry [3]) to name a few. To accomplish these objectives, DSS require precise knowledge of both the absolute and relative orbits of each spacecraft in the system.…”

Section: Introductionmentioning

confidence: 99%

Distributed Multi-GNSS Timing and Localization for Nanosatellites

Giralo

D’Amico

2018

Proceedings of the 31st International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 201

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Recent advances in distribution and miniaturization among spacecraft and expansion of global navigation satellite systems (GNSS) motivate the Distributed Multi‐GNSS Timing and Localization system. The DiGiTaL system is intended to provide nanosatellite swarms with unprecedented centimeter‐level relative navigation accuracy in real time and nanosecond‐level time synchronization through the integration of a multiconstellation GNSS receiver, a chip‐scale atomic clock, and an intersatellite link. This paper describes DiGiTaL's hardware and software design, architecture, and navigation software in detail. The swarming spacecraft are grouped into subsets, where differential GNSS is performed by a precise orbit determination module with integer ambiguity resolution in real time. The resulting precise orbits are then exchanged and fused by a swarm determination module, creating full‐swarm knowledge. Finally, the DiGiTaL architecture is integrated into CubeSat avionics and tested with key hardware in the loop using Stanford's GNSS navigation testbed. For the first time, this paper shows the capability to perform centimeter‐level precise relative navigation using commercial‐off‐the‐shelf CubeSat hardware for spacecraft swarms.

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System design of a miniaturized distributed occulter/telescope for direct imaging of star vicinity

Cited by 20 publications

References 9 publications

Starshade Imaging Simulation Toolkit for Exoplanet Reconnaissance

Starshade Imaging Simulation Toolkit for Exoplanet Reconnaissance

Distributed multi‐GNSS timing and localization for nanosatellites

Distributed Multi-GNSS Timing and Localization for Nanosatellites

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