Henri Gaston Busignies (29 December 1905 – 20 June 1981) was an

electrical engineer Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...

who made major contributions to

radar Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, Marine radar, ships, spacecraft, guided missiles, motor v ...

radio communication Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a trans ...

, and

radio navigation Radio navigation or radionavigation is the application of radio frequencies to determine a position of an object on the Earth, either the vessel or an obstruction. Like radiolocation, it is a type of radiodetermination. The basic principles a ...

. He held 140 patents, many of them secret.

Biography

Busignies became interested in

amateur radio Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency commu ...

at an early age, and graduated from the Jules Ferry College in

Versailles The Palace of Versailles ( ; french: Château de Versailles ) is a former royal residence built by King Louis XIV located in Versailles, about west of Paris, France. The palace is owned by the French Republic and since 1995 has been managed, ...

. 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 which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...

from the Institute Normal Electro Technique in

Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Si ...

, having obtained his first patent, for a radio compass. 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 business ...

's Paris Laboratories, where he developed radio direction finders, airplane radio navigation devices, and early

systems. In 1936 his equipment automatically guided an airplane from Paris to

Réunion Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island o ...

island off the coast of

Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Afric ...

, 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), or radio direction finding (RDF), isin accordance with International Telecommunication Union (ITU)defined as radio location that uses the reception of radio waves to determine the direction in which a radio stati ...

, including four secret patents relating to the automatic high-frequency direction finding (

Huff-Duff High-frequency direction finding, usually known by its abbreviation HF/DF or nickname huff-duff, is a type of radio direction finder (RDF) introduced in World War II. High frequency (HF) refers to a radio band that can effectively communicate ove ...

) system used to locate German

U-boat U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare ro ...

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 facilities for carrying, arming, deploying, and recovering aircraft. Typically, it is the capital ship of a fleet, as it allows a ...

s and

destroyer In naval terminology, a destroyer is a fast, manoeuvrable, long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against powerful short range attackers. They were originally developed ...

s, as well as a further 1,500 mobile systems for the

Army Signal Corps The United States Army Signal Corps (USASC) is a branch of the United States Army that creates and manages communications and information systems for the command and control of combined arms forces. It was established in 1860, the brainchild of Ma ...

. He was also closely involved in early development of

Moving Target Indication Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or tree ...

(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 an 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 systems usua ...

(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,

VORTAC Very high frequency omnirange station (VOR) is a type of short-range radio navigation system for aircraft, enabling aircraft with a receiving unit to determine its position and stay on course by receiving radio signals transmitted by a network ...

phased array In antenna theory, a phased array usually means an electronically scanned array, a computer-controlled array of antennas which creates a beam of radio waves that can be electronically steered to point in different directions without moving th ...

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. Busignies was an

IEEE Fellow As of 2019, the Institute of Electrical and Electronics Engineers (IEEE) has 5,082 members designated Fellow, each of whom is associated with one of the 41 societies under the IEEE. The Fellow grade of membership is the highest level of membershi ...

, and given an honorary Doctor of Science by Newark College of Engineering (1958), and the

Brooklyn Polytechnic Institute The New York University Tandon School of Engineering (commonly referred to as Tandon) is the engineering and applied sciences school of New York University. Tandon is the second oldest private engineering and technology school in the United St ...

(1971). He received numerous other awards and honors during his career, including notably the

IRI Medal The IRI Medal, established by the Industrial Research Institute (IRI) in 1946, recognizes and honors leaders of technology for their outstanding accomplishments in technological innovation which contribute broadly to the development of industry and ...

from the

Industrial Research Institute Innovation Research Interchange (IRI) is a division of the National Association of Manufacturers, a nonprofit association based in Washington, D. C., United States. IRI was founded as a private non-profit in 1938 and merged with the NAM in 2022. I ...

(1971), the

IEEE Edison Medal The IEEE Edison Medal is presented by the Institute of Electrical and Electronics Engineers (IEEE) "for a career of meritorious achievement in electrical science, electrical engineering, or the electrical arts." It is the oldest medal in this fi ...

(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, non-governmental organization. The National Academy of Engineering is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of ...

(1966), and served as chairman of several of its committees.

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 Fellow Members of the IEEE IEEE Edison Medal recipients Members of the United States National Academy of Engineering People associated with radar French telecommunications engineers