position-indicating signal

См. также в других словарях:

• Emergency Position Indicating Radio Beacon — Radiobalise de localisation des sinistres Les radiobalises de localisation des sinistres (RLS) EPIRB émettent sur 406 MHz et sur 121,500 MHz. Des problèmes pour écouter le fichier ? Aidez moi Une radiobalise de localisation des sinistres [1 …   Wikipédia en Français

• Signal-flow graph — A signal flow graph (SFG) is a special type of block diagram[1] and directed graph consisting of nodes and branches. Its nodes are the variables of a set of linear algebraic relations. An SFG can only represent multiplications and additions.… …   Wikipedia

• Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… …   Wikipedia

• Railway semaphore signal — One of the earliest forms of fixed railway signal is the semaphore. These signals display their different indications to train drivers by changing the angle of inclination of a pivoted arm . Semaphore signals were patented in the early 1840s by… …   Wikipedia

• Distress signal — Call for help redirects here. For the TV show, see Call for Help. A distress signal is an internationally recognized means for obtaining help. Distress signals take the form of or are commonly made by using radio signals, displaying a visually… …   Wikipedia

• Traffic signal preemption — is a type of system that allows the normal operation of traffic lights to be preempted, often to assist emergency vehicles.[1][2] The most common use of these systems is to manipulate traffic signals in the path of an emergency vehicle, stopping… …   Wikipedia

• Landing Signal Officer — Landing Signal Officers (LSOs) are naval aviators specially trained to control the approach and landings of airplanes aboard aircraft carriers. Paddles In the U.S. Navy, aircraft carrier operations began with USS Langley (CV 1) in 1922. Langley s …   Wikipedia

• distress signal — 1. a signal used, or designed to be used, by persons in peril, for the purpose of summoning aid, indicating their position, etc., as a radio code sign, aerial flare, flag hoist, or the like. Cf. distress call (def. 1). 2. an indication, esp. a… …   Universalium

• distress signal — /dəsˈtrɛs sɪgnəl/ (say duhs tres signuhl) noun a signal by persons in danger summoning aid and indicating their position by rocket, radio code, flag, or any other means …  

• Distress radiobeacon — PLB redirects here. For other uses, see PLB (disambiguation). Emergency position indicating radio beacons or EPIRBs Distress radio beacons, also known as emergency beacons, ELT or EPIRB, are tracking transmitters which aid in the detection and… …   Wikipedia

• Australian railway signalling — Just as the railways of Australia has suffered issues from incompatible rail gauges, the different states have tended to go their own way regarding railway signalling practice.New South WalesThe signalling system in New South Wales consists… …   Wikipedia