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Deployable Optical Receiver Aperture for Lunar Communications and Navigation (DORA)
Completed
TRL 7 (started at 3, targeting 7)
Description
This NASA-Arizona State University cooperative agreement developed a novel CubeSat form-factor Deployable Optical Receive Aperture (DORA) system for inter-spacecraft communications capable of up to one gigabit per second (Gbps) optical data rates at distances of 5,000 to 10,000 km. Built with commercial off-the-shelf (COTS) components, DORA is a cost-effective system that has a large collecting area, eliminating the need precision pointing accuracy requirements on the host spacecraft. Consequently, DORA is ideally suited for crosslink communications among small spacecraft, especially for those forming a swarm and/or a constellation, and for surface-to-orbit communications. As part of the proposed effort, a 3U CubeSat was designed, built, and tested that contains a DORA demonstration payload capable of closing a 1 Gbps link across 1000 km at 10^-8 bit error rate. No technology currently exists, with this effort representing a significant improvement over the state-of-the-art, with many enabling qualities, that would benefit both NASA and industry in future space architectures that require high data transfer rates.
Benefits
The key features of this technology are its low-cost using COTS components and the ability to allow the host spacecraft to overcome constraints imposed by traditional optical communications systems that require high-precision bus pointing on the order of arcseconds. The notable appeal of this technology is its ability to achieve 1 Gigabit/second laser communications at 1000 km range with very lax spacecraft pointing requirements of ≤ 20° thanks to the novel wide-angle optical receiver, all with COTS components. This would be significant improvement over the SOA with current SmallSat missions targeting 20 Megabits/second at 500 km with a much tighter ≤ 15” pointing for spacecraft. On a broader scale, this technology could enable simpler, cheaper, and higher performance optical communications target acquisition for and amongst CubeSats and/or bigger spacecraft (configured, say, in a swarm or as part of the LunaNet network) by receiving signals from more widely separated locations than traditional fixed, body-mounted optical systems that have more stringent pointing requirements.
Details
| Technology area | Communications, Navigation, and Orbital Debris Tracking and Characterization Systems > Optical Communications |
| Program | Small Spacecraft Technology (SST) |
| Lead organization | Arizona State University-Tempe, Tempe, AZ |
| Start date | 2020-07-01 |
| End date | 2024-06-30 |
Project contacts
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How to get involved
This is a mature technology (TRL 7) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.
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