Henri Busignies
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Henri Gaston Busignies (29 December 1905 – 20 June 1981) was a French-born American
electrical engineer Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...
who made major contributions to
radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...
,
radio communication Radio is the technology of telecommunication, communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transm ...
, and
radio navigation Radio navigation or radionavigation is the application of radio waves to geolocalization, determine a position of an object on the Earth, either the vessel or an obstruction. Like radiolocation, it is a type of Radiodetermination-satellite servi ...
. He held 140 patents, many of them secret.


Early life and education

Busignies became interested in
amateur radio Amateur radio, also known as ham radio, is the use of the radio frequency radio spectrum, spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emer ...
at an early age, and graduated from the Jules Ferry College in
Versailles The Palace of Versailles ( ; ) is a former royal residence commissioned by King Louis XIV located in Versailles, Yvelines, Versailles, about west of Paris, in the Yvelines, Yvelines Department of Île-de-France, Île-de-France region in Franc ...
. In 1926 he received his degree in
electrical engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...
from the Institut Normal Electro Technique in
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
, having obtained his first patent, for a radio compass.


Career

In 1928 Busignies joined
ITT Corporation ITT Inc., formerly ITT Corporation, is an American worldwide manufacturing company based in Stamford, Connecticut. The company produces specialty components for the aerospace, transportation, energy and industrial markets. ITT's three businesses ...
's Paris Laboratories, where he developed radio direction finders, airplane radio navigation devices, and early
radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...
systems. In 1936 his equipment automatically guided an airplane from Paris to
Réunion Réunion (; ; ; known as before 1848) is an island in the Indian Ocean that is an overseas departments and regions of France, overseas department and region of France. Part of the Mascarene Islands, it is located approximately east of the isl ...
island off the coast of
Madagascar Madagascar, officially the Republic of Madagascar, is an island country that includes the island of Madagascar and numerous smaller peripheral islands. Lying off the southeastern coast of Africa, it is the world's List of islands by area, f ...
, in the first practical demonstration of an aircraft guidance system. During World War II his inventions were instrumental in
radio direction finding Direction finding (DF), radio direction finding (RDF), or radiogoniometry is the use of radio waves to determine the direction to a radio source. The source may be a cooperating radio transmitter or may be an inadvertent source, a natural ...
, including four secret patents relating to the automatic high-frequency direction finding ( Huff-Duff) system used to locate German
U-boat U-boats are Submarine#Military, naval submarines operated by Germany, including during the World War I, First and Second World Wars. The term is an Anglicization#Loanwords, anglicized form of the German word , a shortening of (), though the G ...
s. Busignies had escaped from German-occupied Paris with his wife and working models, ultimately making his way to the United States, where the inventions were implemented first along the East Coast, then the West Coast, with another 30 to 40 fixed stations located around the world. About 1,000 smaller systems were installed on
aircraft carrier An aircraft carrier is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and hangar facilities for supporting, arming, deploying and recovering carrier-based aircraft, shipborne aircraft. Typically it is the ...
s and
destroyer In naval terminology, a destroyer is a fast, maneuverable, long-endurance warship intended to escort larger vessels in a fleet, convoy, or carrier battle group and defend them against a wide range of general threats. They were conceived i ...
s, as well as a further 1,500 mobile systems for the Army Signal Corps. He was also closely involved in early development of Moving Target Indication (MTI) radar during the war. After the war, Busignies remained in the United States, where he rose steadily through ranks of ITT's senior management, ultimately becoming the corporation's Chief Scientist. His inventions included contributions to
Identification Friend or Foe Identification, friend or foe (IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an ''interrogation'' signal and then sends a ''response'' that identifies the broadcaster. IFF syst ...
(IFF) technology, conical scanning and 3-dimensional radar, gunfire and shell trajectory control, and deception systems. He also played a large role in development of ILS,
TACAN A tactical air navigation system, commonly referred to by the acronym TACAN, is a navigation system initially designed for naval aircraft to acquire moving landing platforms (i.e., ships) and later expanded for use by other military aircraft. It p ...
, VORTAC,
phased array In antenna (radio), antenna theory, a phased array usually means an electronically scanned array, a computer-controlled Antenna array, array of antennas which creates a radio beam, beam of radio waves that can be electronically steered to point ...
s for communications, and the use of dipole needles in orbit for reflection of radio waves ( Project West Ford). He retired from ITT in 1975.


Honors

Busignies was an
IEEE Fellow , the Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and ot ...
, and given an honorary Doctor of Science by Newark College of Engineering (1958), and the Brooklyn Polytechnic Institute (1971). He received numerous other awards and honors during his career, including notably the IRI Medal from the
Industrial Research Institute Innovation Research Interchange (IRI) is a division of the National Association of Manufacturers, a Nonprofit organization, nonprofit association based in Washington, D. C., United States. IRI was founded as a private non-profit association in 1938 ...
(1971), the IEEE Edison Medal (1977), and the Armstrong Medal from the Radio Club of America. He was elected a member of the
National Academy of Engineering The National Academy of Engineering (NAE) is an American Nonprofit organization, nonprofit, NGO, non-governmental organization. It is part of the National Academies of Sciences, Engineering, and Medicine (NASEM), along with the National Academ ...
(1966), and served as chairman of several of its committees.


Personal life

Busignier was married to his wife Cecilie for nearly 50 years. He naturalized as an American citizen in 1953. He was survived by his wife, their daughter, and two grandchildren.


References


Sources


IEEE History SiteMemorial Tributes: National Academy of Engineering, Volume 2 (1984), pp. 28-34.
{{DEFAULTSORT:Busignies, Henri 1905 births 1981 deaths People from Sceaux, Hauts-de-Seine French electrical engineers Fellows of the IEEE History of air traffic control IEEE Edison Medal recipients Members of the United States National Academy of Engineering People associated with radar French telecommunications engineers