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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 systems usually use radar frequencies, but other electromagnetic frequencies, radio or infrared, may be used. [1]
Mode 3/A is often combined with Mode C to provide altitude information as well. C: Provides the aircraft's pressure altitude and is usually combined with Mode 3/A to provide a combination of a 4-digit octal code and altitude as Mode 3 A/C, often referred to as Mode A and C: 4: Provides a 3-pulse reply, delay is based on the encrypted challenge: 5
The original design had three such "modes", Mode 1 was triggered by the interrogator by sending the two pulses 3 μs apart (±0.2 μs), Mode 2 was 5 μs and Mode 3 was 8 μs. [10] The response to these interrogations remained simple; a successful interrogation on Mode 1 or 3 caused a single pulse to be sent in reply, very shortly after the ...
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 ...
Cyclododecatrienes are cyclic trienes with the formula C 12 H 18. Four isomers are known for 1,5,9-cyclododecatriene. The trans, trans, cis -isomer is a precursor in the production of nylon-12 . The four isomers of 1,5,9-cyclododecatriene. Left to right: all- cis; all- trans; cis, trans, trans; and cis, cis, trans.
Hints About Today's NYT Connections Categories on Saturday, June 15. 1. Related to a certain sport. 2. Related to a certain animal. 3. What might be mentioned when talking about hair. 4. They can ...
Cycloocta-1,5-diene is a cyclic hydrocarbon with the chemical formula C8H12, specifically [− (CH2)2−CH=CH−]2 . There are three configurational isomers with this structure, that differ by the arrangement of the four C–C single bonds adjacent to the double bonds. Each pair of single bonds can be on the same side ( cis, Z) or on opposite ...
14:9 aspect ratio. The red outline frames an approximately 16:9 picture. The yellow outline, not including the black bars at top and bottom, shows the same picture cropped to 14:9, while the whole yellow box frames a 4:3 picture. 14:9 (1. 5 :1) is a compromise aspect ratio between 4:3 and 16:9. [1] [2] It is used to create an acceptable picture ...