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Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...
Secondary surveillance radar (SSR) is a radar system used in air traffic control (ATC), that unlike primary radar systems that measure the bearing and distance of targets using the detected reflections of radio signals, relies on targets equipped with a radar transponder, that reply to each interrogation signal by transmitting encoded data such ...
An IRST sensor on a Sukhoi Su-35. An infrared search and track ( IRST) system (sometimes known as infrared sighting and tracking) is a method for detecting and tracking objects which give off infrared radiation, such as the infrared signatures of jet aircraft and helicopters. [1]
Imaging radar is an application of radar which is used to create two-dimensional images, typically of landscapes. Imaging radar provides its light to illuminate an area on the ground and take a picture at radio wavelengths. It uses an antenna and digital computer storage to record its images.
The International Affective Picture System ( IAPS) is a database of pictures designed to provide a standardized set of pictures for studying emotion and attention [1] that has been widely used in psychological research. [2] The IAPS was developed by the National Institute of Mental Health Center for Emotion and Attention at the University of ...
The Periodic Table of the Elements in Pictures.pdf. English: This pictorial periodic table is colorful, boring, and packed with information. In addition to the element's name, symbol, and atomic number, each element box has a drawing of one of the element's main human uses or natural occurrences. The table is color-coded to show the chemical ...
1 × 12-pounder gun. HMS E25 was a British E-class submarine built by William Beardmore and Company, Dalmuir. She was, along with the future E26, one of a pair of submarines ordered by the Ottoman Navy on 29 April 1914, but was taken over by the Royal Navy and assigned the E25 name. She was laid down in November 1914, launched on 23 August 1915 ...
AN/URC-117 was the system's Joint Electronics Type Designation System identifier, which signified various radio components installed in different locations. [4] Each GWEN Relay Node site featured a longwave transmitting tower, generally between 290 and 299 feet (88 and 91 m) tall, and emitting an RF output of between 2,000 and 3,000 watts.