== Contribution to Early Digital Communications ==
While less publicly known than contemporaries such as Alec Reeves or Donald Davies, Ronald Hugh Barker played a key role in the early development of British digital communications. Working at the Signals Research and Development Establishment (SRDE), he was responsible for the invention of the [[Barker code]] in 1953, which remains in use for synchronisation in radar and, telemetry systems and digital communications.<ref name="IETbio">{{cite web |title=Ronald Hugh Barker (1915–2015) |url=https://www.theiet.org/membership/library-and-archives/the-iet-archives/biographies/ronald-hugh-barker-1915-2015/ |website=The IET |access-date=2025-04-21}}</ref> His work also included early applications of [[pulse-code modulation]] and digital radar data transmission, which anticipated features of modern air traffic control systems.<ref name="IETblog">{{cite web |last=IET Archives |title=The Story of Roy Barker: A Physicist with 70 Years of Membership |url=https://ietarchivesblog.org/2024/05/08/the-story-of-roy-barker-a-physicist-with-70-years-of-membership-at-the-iet/ |website=IET Archives Blog |date=2024-05-08 |access-date=2025-04-21}}</ref>
