Zircon (disambiguation)

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Zircon is a mineral and gemstone.

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Zircon may also refer to:

Science and technology

Military

Other uses

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<span class="mw-page-title-main">ECHELON</span> Signals intelligence collection and analysis network

ECHELON, originally a secret government code name, is a surveillance program operated by the five signatory states to the UKUSA Security Agreement: Australia, Canada, New Zealand, the United Kingdom and the United States, also known as the Five Eyes.

<span class="mw-page-title-main">Microkernel</span> Kernel that provides fewer services than a traditional kernel

In computer science, a microkernel is the near-minimum amount of software that can provide the mechanisms needed to implement an operating system (OS). These mechanisms include low-level address space management, thread management, and inter-process communication (IPC).

Mach may refer to Mach number, the speed of sound in local conditions. It may also refer to:

<span class="mw-page-title-main">Signals intelligence</span> Intelligence-gathering by interception of signals

Signals intelligence (SIGINT) is intelligence-gathering by interception of signals, whether communications between people or from electronic signals not directly used in communication. Signals intelligence is a subset of intelligence collection management. As classified and sensitive information is usually encrypted, signals intelligence in turn involves the use of cryptanalysis to decipher the messages. Traffic analysis—the study of who is signaling whom and in what quantity—is also used to integrate information again.

Hyacinth, genus Hyacinthus, is a small group of bulbous, spring-blooming perennial plants.

SME may refer to:

<span class="mw-page-title-main">Skynet (satellite)</span> Communications satellite

Skynet is a family of military communications satellites, now operated by Airbus Defence and Space on behalf of the United Kingdom's Ministry of Defence (MoD). They provide strategic and tactical communication services to the branches of the British Armed Forces, the British intelligence agencies, some UK government departments and agencies, and to allied governments. Since 2015 when Skynet coverage was extended eastward, and in conjunction with an Anik G1 satellite module over America, Skynet offers near global coverage.

BS, B.S., Bs or bs may refer to:

The vanguard is the leading part of an advancing military formation.

L2, L2, L02, L II, L.2 or L-2 may refer to:

<span class="mw-page-title-main">RAF Menwith Hill</span> Royal Air Force base in Yorkshire, England

Royal Air Force Menwith Hill is a Royal Air Force station near Harrogate, North Yorkshire, England, which provides communications and intelligence support services to the United Kingdom and the United States. The site contains an extensive satellite ground station and is a communications intercept and missile warning site. It has been described as the largest electronic monitoring station in the world.

Zircon was the codename for a British signals intelligence satellite, designed to intercept radio and other signals from the USSR, Europe and other areas. It was intended to be launched in 1988 on a NASA space shuttle. However, the project was cancelled in 1987 because of its cost. Secrecy about the project's cost, hidden from the British Parliament, resulted in the Zircon affair.

L3, L03, L.3 or L-3 may refer to:

The Zircon affair was an incident in 1986 and 1987 caused by the planned broadcast on the BBC of a television programme about the ultimately cancelled Zircon signals intelligence satellite, as part of the six-part Secret Society series. It raised many important issues in the British constitution, particularly concerning parliamentary privilege and "gagging orders".

<span class="mw-page-title-main">Military communications</span> Messages within armed forces

Military communications or military signals involve all aspects of communications, or conveyance of information, by armed forces. Examples from Jane's Military Communications include text, audio, facsimile, tactical ground-based communications, naval signalling, terrestrial microwave, tropospheric scatter, satellite communications systems and equipment, surveillance and signal analysis, security, direction finding and jamming.

<span class="mw-page-title-main">Duncan Campbell (journalist)</span> British investigative journalist

Duncan Campbell is a British freelance investigative journalist, author, and television producer. Since 1975, he has specialised in the subjects of intelligence and security services, defence, policing, civil liberties and, latterly, computer forensics. He was a staff writer at the New Statesman from 1978 to 1991 and associate editor (Investigations) from 1988 to 1991. He was prosecuted under the Official Secrets Act in the ABC trial in 1978 and made the controversial series Secret Society for the BBC in 1987. In 1988, he revealed the existence of the ECHELON surveillance program.

<span class="mw-page-title-main">GCHQ Bude</span> Government Communications Headquarters installation in Bude, Cornwall, UK

GCHQ Bude, also known as GCHQ Composite Signals Organisation Station Morwenstow, abbreviated to GCHQ CSO Morwenstow, is a UK Government satellite ground station and eavesdropping centre located on the north Cornwall coast at Cleave Camp, between the small villages of Morwenstow and Coombe. It is operated by the British signals intelligence service, officially known as the Government Communications Headquarters, commonly abbreviated GCHQ. It is located on part of the site of the former World War II airfield, RAF Cleave.

The British space programme is the British government's work to develop British space capabilities. The objectives of the current civil programme are to "win sustainable economic growth, secure new scientific knowledge and provide benefits to all citizens."

Signals intelligence by alliances, nations and industries comprises signals intelligence (SIGINT) gathering activities by national and non-national entities; these entities are commonly responsible for communications security (COMSEC) as well.

<span class="mw-page-title-main">Fuchsia (operating system)</span> Computer operating system by Google

Fuchsia is an open-source capability-based operating system developed by Google. In contrast to Google's Linux-based operating systems such as ChromeOS and Android, Fuchsia is based on a custom kernel named Zircon. It publicly debuted as a self-hosted git repository in August 2016 without any official corporate announcement. After years of development, its official product launch was on the first-generation Google Nest Hub, replacing its original Linux-based Cast OS.