This paper provides an overview of the Laser Communications Relay Demonstration Project (LCRD), a joint project between NASA's Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory, California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL). LCRD will provide two years of continuous high data rate optical communications in an operational environment, demonstrating how optical communications can meet NASA's growing need for higher data rates, or for the same data rate provided by a comparable RF system, how it enables lower power, lower mass communications systems on user spacecraft. In addition, LCRD's architecture will allow it to serve as a testbed in space for the development of additional symbol coding, link and network layer protocols, etc. This paper reviews the current concepts and designs for the flight and ground optical communications terminals, the critical technologies required, and the concept of operations. It reports preliminary conclusions from several trade studies conducted at GSFC, JPL, and MIT/LL. The flight optical communications terminals will be flown on a commercial communications satellite in geosynchronous orbit to be launched no earlier than December 2016, and will demonstrate a technology critical for NASA's Next Generation Tracking and Data Relay Satellite.
This paper provides an overview of the Laser Communications Relay Demonstration Project (LCRD), a joint project between NASA's Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory, California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT/LL). LCRD will provide two years of continuous high data rate optical communications in an operational environment, demonstrating how optical communications can meet NASA's growing need for higher data rates, or for the same data rate provided by a comparable RF system, how it enables lower power, lower mass communications systems on user spacecraft. In addition, LCRD's architecture will allow it to serve as a testbed in space for the development of additional symbol coding, link and network layer protocols, etc. This paper reviews the current concepts and designs for the flight and ground optical communications terminals, the critical technologies required, and the concept of operations. It reports preliminary conclusions from several trade studies conducted at GSFC, JPL, and MIT/LL. The flight optical communications terminals will be flown on a commercial communications satellite in geosynchronous orbit to be launched no earlier than December 2016, and will demonstrate a technology critical for NASA's Next Generation Tracking and Data Relay Satellite.
This paper presents work being done at NASA/GSFC by the Operating Missions as Nodes on the Internet (OMNI) project to demonstrate the application of Internet communication technologies to space communication. The goal is to provide global addressability and standard network protocols and applications for future space missions. It describes the communication architecture and operations concepts that will be deployed and tested on a Space Shuttle flight scheduled to fly in August 2002. This is a NASA Hitchhiker mission called Communication and Navigation Demonstration On Shuttle (CANDOS).The mission will be using a small programmable transceiver mounted in the Shuttle bay that can communicate through NASA's ground tracking stations as well as NASA's space relay satellite system. The transceiver includes a processor running the Linux operating system and a standard synchronous serial interface that supports the High-level Data Link Control (HDLC) framing protocol. One of the main goals will be to test the operation of the Mobile IP protocol (RFC 2002) for automatic routing of data as the Shuttle passes from one contact to another. Other protocols to be utilized onboard CANDOS include secure login (SSH), UDP-based reliable file transfer (MDP), and blind commanding using UDP.The paper describes how each of these standard protocols available in the Linux operating system can be used to support communication with a space vehicle. It will discuss how each protocol is suited to support the range of special communication needs of space missions.
A new transponder and RF ground support equipment are making Tracking and Data Relay Satellite System (TDRSS) communications available to lower budget NASA projects. Due to their use of current and, in some cases, state-of-the-art technology, the new designs provide advanced features to the user and are still less expensive than any previous designs. The new equipment will be used first to support long duration scientific balloon flights in Antarctica in December 1992. 1 nt roduct ion Fig. 1. The NASA Tracking and Data Relay Satellite System
This paper provides an overview of NASA's Laser Communications Relay Demonstration Project (LCRD), a joint project between NASA's Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory -California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT LL). LCRD will provide a minimum of two years of high data rate optical communications services in geosynchronous orbit (GEO), demonstrating how optical communications can meet NASA's and other agencies' growing need for higher data rates. Two optical communications terminals will be flown on a SSL commercial communications satellite in GEO to be launched no earlier than December 2017, and will demonstrate a technology critical for NASA's Next Generation Tracking and Data Relay Satellite. This paper will discuss the results of the recent Lunar Laser Communication Demonstration, describe the remaining challenges for an optical relay network, and discuss how the LCRD mission will be a pathfinder for that future system.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.