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Aref based communications are currently

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the cornerstone of space communications

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but the radio and microwave portions of

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the electromagnetic spectrum are getting

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close to capacity so with the reliable

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infrared laser similar to the fiber

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optic cable bringing TV internet and

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phone into your home

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NASA is venturing into a new age of

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high-speed data delivery why lasers

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radiofrequency and lasers both travel at

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the speed of light and in the form of a

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wave but 10,000 infrared waves can fit

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into one radio wave which means you can

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get more information faster via laser

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light over the same period of time than

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you would with RF the concept of

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space-based optical communications has

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been proven in previous low data rate

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demonstrations but the lunar laser

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communications demonstration will

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introduce a new infrastructure and we'll

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have the ability to transfer data five

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times faster than its predecessors

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although short-lived LLC D will provide

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an important building block to the next

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tier of laser communications so with one

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eye on the present and the other on the

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future NASA is preparing to implement an

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operational optical communications

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network the laser communications relay

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demonstration is the first step in

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establishing this infrastructure over a

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two-year period laser comm will leverage

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the pioneering work of LLC D and other

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optical communications technology

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efforts to move another step closer to

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the ultimate vision of a satellite to

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ground optical network essentially this

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network would be capable of supporting

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both deep space missions and near earth

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communication needs LC Rd will expand on

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the capabilities of the lunar laser

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communications demo by leveraging

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commercialized optical communication

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components and existing operational

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ground facilities

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our partners at MIT Lincoln lab are

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nearing completion of the designs and

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flight qualifications of the optical

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module the ppm and dpsk modem and the

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optical module controller they have

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recently installed the lunar laser comm

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ground terminal at the white sands

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complex in New Mexico to support the LLC

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D operations the ll GT will become one

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of LCR DS ground terminals after some

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minor modifications such as installing

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adaptive optics data recorders modems

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and other ground support equipment once

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retrofitted the ground terminal will

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transmit a beacon and communication data

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through only one transmitting telescope

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and receive both the dpsk and ppm

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modulated optical signals from the

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spacecraft through only one receiving

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telescope the LCR D team at the Jet

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Propulsion lab in Pasadena California

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will make similar modifications to the

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octal telescope facility on Table

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Mountain which will serve as the second

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LC Rd ground station together these

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ground stations will allow LC Rd to

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demonstrate its real-time optical

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communications relay capability as well

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as characterizing performance and

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atmospheric effects such effects on the

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dpsk signal is why adaptive optics is

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needed on both facilities in keeping

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with NASA's goal of a cost-effective

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technology demonstration NASA Goddard is

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procuring the commercialized hardware

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like the optical module the controller

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electronics and the space switching unit

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Goddard is also building the modems

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in-house according to the MIT Lincoln

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lab designs which call for the ppm and

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dpsk modulations to be built into one

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modem

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in order to utilize existing commercial

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access to space Space Systems Loral will

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host the laser comm payload on one of

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its commercial satellites which is a

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first for NASA this highly anticipated

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launch is scheduled for 2017 higher

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volume and lower error rates will enable

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the next generation of tracking and data

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relay satellites to evolve into a global

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network which offers optical services

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future near Earth and deep space

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missions will transmit unprecedented

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amounts of data as will commercial and

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military spacecraft we already know that

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data handling and transmission needs

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evolved rapidly and NASA intends to meet

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those needs before there were

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smartphones the idea of streaming HD

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video to your cellphone was thought to

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be futuristic and far off the same could

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be said about NASA streaming HD content

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from the surface of Mars but this could

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happen in just a few short years our

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communications infrastructure needs to

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be ready to support tomorrow's demands

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and Elsi Rd is the first giant leap in

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establishing our operational optical