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Proceedings Article

Design of a high-speed space modem for the lunar laser communications demonstration

[+] Author Affiliations
Steven Constantine, Laura E. Elgin, Mark L. Stevens, Joseph A. Greco, Kenneth Aquino, Daniel D. Alves, Bryan S. Robinson

MIT Lincoln Lab. (USA)

Proc. SPIE 7923, Free-Space Laser Communication Technologies XXIII, 792308 (February 21, 2011); doi:10.1117/12.878927
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From Conference Volume 7923

  • Free-Space Laser Communication Technologies XXIII
  • Hamid Hemmati
  • San Francisco, California, USA | January 22, 2011

abstract

The space terminal modem for the Lunar Laser Communications Demonstration (LLCD) provides duplex lasercom capabilities between the Earth and a satellite in lunar orbit with a 0.5-W optical transmitter delivering downlink data rates of 39-620 Mbps and an optically-preamplified direct detection receiver supporting uplink data rates of 10-19 Mbps. The modem consists of four subsystem modules: digital electronics, analog electronics, power conditioning, and electro-optics. This modular approach permits subsystems to be built and tested in parallel and provides design flexibility to address evolving requirements. Other important design considerations for the modem include the utilization of commercial-off- the-shelf (COTS) components to reduce delivery time, cost, minimization of size, weight, and power, and the ability to survive launch conditions and operate over a broad temperature range in lunar orbit.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Steven Constantine ; Laura E. Elgin ; Mark L. Stevens ; Joseph A. Greco ; Kenneth Aquino, et al.
"Design of a high-speed space modem for the lunar laser communications demonstration", Proc. SPIE 7923, Free-Space Laser Communication Technologies XXIII, 792308 (February 21, 2011); doi:10.1117/12.878927; http://dx.doi.org/10.1117/12.878927


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