Presented by:
Scott Burleigh - Ed Greenberg - Adrian J. Hooke
Interplanetary Network and Information Systems Directorate
Jet Propulsion Laboratory
Abstract
For most of the past thirty years, deep space communications and the terrestrial Internet have followed striking similar but totally separate evolutionary paths. In the early 1970s, while the DOD was developing the packet-switched "ARPANET" to facilitate the exchange of information among the government community, JPL led the development of new packetized telemetry and telecommand systems to enable more scientific data to be returned from space at lower costs. Over 25 years, the ARPANET eventually evolved from a research capability to today's Internet. Over the same period, the JPL concepts stimulated the formation of the international Consultative Committee for Space Data Systems (CCSDS) and the consequent adoption of the Packet Telemetry and Packet Telecommand as the worldwide standards for space mission data exchange.
In 1974, Dr. Vint Cerf and Bob Kahn wrote the original concepts for TCP/IP, the fundamental protocol building blocks for today's Internet. Also in 1974, Ed Greenberg and Adrian Hooke at JPL wrote the original concepts for Packet Telemetry, the underpinning of CCSDS. In 1998, Vint Cerf was appointed as a JPL Distinguished Visiting Scientist. For the past three years, these terrestrial and deep space data communications experts have been working together with a small team to develop an architecture that defines how the terrestrial Internet may be extended into Deep Space - the "InterPlanetary Internet". This talk will review the new concepts and their implications for the expansion of human intelligence across the Solar System.
Biographies:
Scott Burleigh
Scott Burleigh has worked at JPL since 1986 on a wide variety of software
development efforts. Those efforts include the VNESSA network service for
near-real-time distribution of science data from Voyager's Neptune
encounter in 1989, the prototyping and initial development of the Telemetry
Delivery System of AMMOS, and design and implementation of the Tramel
infrastructure for dynamically configured distributed software. Since 1996
his main interest has been the design of protocols for data communication
in environments characterized by very high propagation latency, very low
data rates, and other severe constraints. He is one of the co-designers of
the CCSDS File Delivery Protocol (CFDP) and was the developer of the first
CFDP implementation; he currently divides his time between the
Interplanetary Internet Research Group and JPL's Sensor Webs project.
Ed Greenberg
Ed Greenberg received a B.E.E from the College of the City of New York in
January 1961. That year he was part of a multi-company team at Itek
Corporation that was exploring the feasibility of a computer graphics
workstation. He came to JPL in January of 1962 to work as a flight computer
designer. He was the primary designer of the Central Computer System
(CC&S) for the Mariner series of spacecraft where he also was the lead
software and sequence designer of the CC&S for Mariner 9 and 10 flight
operations. It was in that role that he authored the Computer Sequence
Development and Simulation Software which has been known at JPL as COMGEN
and COMSIM. In 1970, he designed the Central computer for the Viking
Orbiter Spacecraft which was later used for the Voyager series of missions.
In 1973 his efforts lead to the establishment of the End-to-End Information
Group within JPL from which he was deeply engaged with developing
approaches for improved operations and the development of leading
standards. In 1980, he and Adrian Hooke went to ESA to discuss the
development of inter-agency cross support communications standards. This
activity later became the CCSDS. He has been continually involved in the
CCSDS for the past twenty years and has been a key technical contributor to
the CCSDS standardization activities.
Adrian Hooke
Adrian Hooke received a B.Sc. (Honours) in Electronic and Electrical
Engineering from the University of Birmingham, England in 1965. He came to
the USA in 1966 to work for Bendix and then Grumman on the Apollo 9,10, 11
and 12 Lunar Modules at the Kennedy Space Center. First joining JPL at the
end of 1969, he was heavily involved with the in-flight command and control
of the Mariner 9 and 10 missions to Mars, Venus and Mercury, definition of
the Voyager onboard data system and design of the SEASAT end-to-end data
system. In the mid 1970s he was a staff member of the European Space
Agency, responsible for flight operations design for the SpaceLab program.
Rejoining JPL in 1977, he was a key member of the End-to-End Information
systems engineering thrust and a founder of the CCSDS. For the past
twenty-five years he has led most of the key CCSDS standardization
activities. He is currently a Principal in IPN-ISD.
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Video (avi - 35mb)