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History of RADAR
During the post-war period, British radar research continued at institutions such as the [[Signals Research and Development Establishment]] (SRDE). In 1953, engineer [[Ronald Hugh Barker]] developed a method for synchronising digital communication systems, known as the [[Barker code]]. This binary sequence improved the reliability of signal transmission in radar and telemetry applications. The code remains in use today for pulse compression in radar systems and in many other digital applications.
1948 A tracking Display and Data Transmission SRDE Tech Memo RES 113▼
1949 Appendix II to Conversion of Shaft Position to Binary Pulse Code.pdf IETR Ref▼
PCM
His work on electrical pulse-code modulation systems.<ref>{{cite patent| country=US|number=US2730676A|title= Electrical Pulse Code Modulation| url=<https://worldwide.espacenet.com/publicationDetails/originalDocument?FT=D&date=19530520&DB=&locale=en_EP&CC=GB&NR=691810A&KC=A&ND=4#|application-date=1951}}/ref> and digital transmission methods also contributed to early experiments in encrypted radar signals and the foundations of modern air traffic control systems.
▲1948 A tracking Display and Data Transmission SRDE Tech Memo RES 113
1952 Group Synchronising of Binary Digital Systems
1955 GB706687 (A) Electrical Signal Generating Systems IET▼
1948 Improvements in or relating to Apparatus for data in Binary Digital Form <ref>{{cite patent|country=US|number=US2730676A|title=Improvements in or relating to apparatus for the representation of data in a binary digital form |url=https://worldwide.espacenet.com/patent/search/family/010175782/publication/GB650913A?q=pn%3DGB650913A |publisher=European Patents Office |access-date=January 24, 2024 |ref=GB650913A |date=1951}}</ref>
▲1949 Appendix II to Conversion of Shaft Position to Binary Pulse Code.pdf IETR Ref
1952 Group Synchronising of Binary Digital Systems
▲1955 GB706687 (A) Electrical Signal Generating Systems IET
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