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Antsos, D.

Publications and source records attributed to Antsos, D..

7 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2016

Overview of Optical Ground Station 1 of the NASA Space Communications and Navigation Program

Optical Ground Station 1 (OGS1) is the first of a new breed of dedicated ground terminals to support NASA’s developing space-based optical communications infrastructure. It is based at NASA’s Optical Communications Telescope Laboratory (OCTL) at the Table Mountain Observatory near Wrightwood, CA. The system will serve as the primary ground station for NASA’s Laser Communications Relay Demonstration (LCRD) experiment. This paper presents an overview of the OCTL telescope facility, the OGS1 ground-based optical communications systems, and the networking and control infrastructure currently under development. The OGS1 laser safety systems and atmospheric monitoring systems are also briefly described.

Optical Channel↗
NASA NTRS2012

Development of the Optical Communications Telescope Laboratory: A Laser Communications Relay Demonstration Ground Station

The Laser Communications Relay Demonstration (LCRD) project will demonstrate high bandwidth space to ground bi-directional optical communications links between a geosynchronous satellite and two LCRD optical ground stations located in the southwestern United States. The project plans to operate for two years with a possible extension to five. Objectives of the demonstration include the development of operational strategies to prototype optical link and relay services for the next generation tracking and data relay satellites. Key technologies to be demonstrated include adaptive optics to correct for clear air turbulence-induced wave front aberrations on the downlink, and advanced networking concepts for assured and automated data delivery. Expanded link availability will be demonstrated by supporting operations at small sun-Earth-probe angles. Planned optical modulation formats support future concepts of near-Earth satellite user services to a maximum of 1.244 Gb/s differential phase shift keying modulation and pulse position modulations formats for deep space links at data rates up to 311 Mb/s. Atmospheric monitoring instruments that will characterize the optical channel during the link include a sun photometer to measure atmospheric transmittance, a solar scintillometer, and a cloud camera to measure the line of sight cloud cover. This paper describes the planned development of the JPL optical ground station.

optical commuication↗
NASA NTRS1996

New Millenium Deep Space Tiny Transmitter: First Phase of a Digital Transponder

An advanced technology X- and Ka-band (8 and 32 GHz) Tiny Transmitter is being developed at JPL for the New Millenium program and is described in this paper. The Tiny Transponder is the first phase of development of the Tiny Transponder which will incorporate recent advancements in miniaturization and flexibility of radio systems by utilizing digital radio techniques.

Cassini↗
NASA NTRS1996

Ka-Band Tiny Transmitter for the New Millenium Program

The size, mass and cost of telecommunications systems on deep space missions have increased at almost an exponential rate over the last thirty years. Great cost and size reduction of these systems can be achieved by reducing the cost and size of the transponder component of the radio subsystem. An advanced technology X-and Ka-band (8 and 32 GHz) Tiny Transmitter is being developed at JPL for the New Millenium program and is described in this paper.

Cassini↗