Скачать или смотреть Testing Space Lasers for Deep Space Optical Communications Mission Overview

The DSOC flight laser transceiver is an experiment attached to NASA’s Psyche spacecraft, but Psyche relies on traditional radio communications for mission operations. The laser transceiver features both a near-infrared laser transmitter to send high-rate data to Earth and a sensitive photon-counting camera to receive a laser beam sent from Earth. But the transceiver is just one part of the technology demonstration.

There is no dedicated infrastructure on Earth for deep space optical communications, so for the purposes of DSOC, two ground telescopes have been updated to communicate with the flight laser transceiver. NASA’s Jet Propulsion Laboratory in Southern California will host the operations team, and a high-power near-infrared laser transmitter has been integrated with the Optical Communications Telescope Laboratory at JPL’s Table Mountain facility near Wrightwood, California. The transmitter will deliver a modulated laser signal to DSOC’s flight transceiver and serve as a beacon, or pointing reference, so that the returned laser beam can be accurately aimed back to Earth.

Data sent from the flight transceiver will be collected by the 200-inch (5.1-meter) Hale Telescope at Caltech’s Palomar Observatory in San Diego County, California, which has been equipped with a special superconducting high-efficiency detector array.
DSOC is the latest in a series of optical communication demonstrations funded by NASA’s Technology Demonstration Missions (TDM) program and the agency’s Space Communications and Navigation (SCaN) program. JPL, a division of Caltech in Pasadena, California, manages DSOC for TDM within NASA’s Space Technology Mission Directorate and SCaN within the agency’s Space Operations Mission Directorate.

The Psyche mission is led by Arizona State University. JPL is responsible for the mission’s overall management, system engineering, integration and test, and mission operations. Psyche is the 14th mission selected as part of NASA’s Discovery Program, managed by the agency’s Marshall Space Flight Center in Huntsville, Alabama. NASA’s Launch Services Program, based at the agency’s Kennedy Space Center, is managing the launch service. Maxar Technologies in Palo Alto, California, provided the high-power solar electric propulsion spacecraft chassis.


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