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15 March 2023 High-rate 256+ Gbit/s laser communications for enhanced high-resolution imaging using space-based very long baseline interferometry (VLBI)
Jade P. Wang, Bryan Bilyeu, Don Boroson, David Caplan, Bryan Robinson, Curt Schieler, Michael Johnson, Lindy Blackburn, Sheperd Doeleman, Kari Haworth
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Proceedings Volume 12413, Free-Space Laser Communications XXXV; 1241308 (2023) https://doi.org/10.1117/12.2651471
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
Space-based VLBI imaging can dramatically improve state-of-the-art astronomical radio-imaging resolution by enabling significantly longer baseline distances and eliminating atmospheric-attenuation constraints on RF carrier imaging wavelength. However, smaller space-based apertures and sensitivity constraints impose challenging recorded-data downlink-rate requirements, potentially to 256 Gbit/s. Laser communications is a promising option for realizing such highrate long-distance downlinks with modest power and aperture demands. Here, we present a scalable lasercom architecture that can enable high-rate long-distance downlinks needed for enhanced space-based VLBI imaging from geosynchronous orbit (GEO).
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Jade P. Wang, Bryan Bilyeu, Don Boroson, David Caplan, Bryan Robinson, Curt Schieler, Michael Johnson, Lindy Blackburn, Sheperd Doeleman, and Kari Haworth "High-rate 256+ Gbit/s laser communications for enhanced high-resolution imaging using space-based very long baseline interferometry (VLBI)", Proc. SPIE 12413, Free-Space Laser Communications XXXV, 1241308 (15 March 2023); https://doi.org/10.1117/12.2651471
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KEYWORDS
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Receivers
Telecommunications
Optical communications
Data communications
Wavelength division multiplexing
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