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The Vancouver Harbour Air Control Tower, which serves Vancouver Harbour Water Airport (CYHC), is placed on top of the 142 m (466 ft) skyscraper Granville Square in Vancouver, British Columbia, Canada. Built in 1973 it remains the highest air traffic control tower in the world, in the city with one of the world's highest levels of seaplane activity.
Command and control (abbr. C2) is a "set of organizational and technical attributes and processes ... [that] employs human, physical, and information resources to solve problems and accomplish missions" to achieve the goals of an organization or enterprise, according to a 2015 definition by military scientists Marius Vassiliou, David S. Alberts, and Jonathan R. Agre.
The Tower of London, officially His Majesty's Royal Palace and Fortress of the Tower of London, is a historic castle on the north bank of the River Thames in central London, England. It lies within the London Borough of Tower Hamlets, which is separated from the eastern edge of the square mile of the City of London by the open space known as ...
Control zone. In aviation, a control zone ( CTR) is a volume of controlled airspace, usually situated below a control area, normally around an airport, which extends from the surface to a specified upper limit, established to protect air traffic operating to and from that airport. Because CTRs are, by definition, controlled airspace, aircraft ...
The CN Tower ( French: Tour CN) is a 553.3 m-high (1,815.3 ft) concrete communications and observation tower in Toronto, Ontario, Canada. [3] [8] Completed in 1976, it is located in downtown Toronto, built on the former Railway Lands. Its name "CN" referred to Canadian National, the railway company that built the tower.
The top of the 'L-Tower' is visible to the right. Flak towers (German: Flaktürme) were large, above-ground, anti-aircraft gun blockhouse towers constructed by Nazi Germany. There were a total of 8 flak tower complexes in the cities of Berlin (three), Hamburg (two), and Vienna (three) from 1940 onwards. Other cities that used flak towers ...
t. e. Pulse-width modulation ( PWM ), also known as pulse-duration modulation ( PDM) or pulse-length modulation ( PLM ), [1] is any method of representing a signal as a rectangular wave with a varying duty cycle (and for some methods also a varying period ). PWM is useful for controlling the average power or amplitude delivered by an electrical ...
Northern California TRACON (NCT) ( Terminal Radar Approach Control ), or NorCal TRACON for short (pronounced "nor-cal tray-con"), also known as NorCal Approach, is an air traffic control facility that provides safety alerts, separation, and sequencing of air traffic arriving, departing, and transiting the airspace and airports in Northern ...