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The ground hand signal: "Ready to fire: clear and ready to fire, indicated by pointing down range." Leaders of dismounted units use arm and hand signals to control the movement of individuals, teams, and squads. These signals are used by infantry and by combat support and combat service support elements organized for infantry missions.
The signal is performed by holding one hand up with the thumb tucked into the palm, then folding the four other fingers down, symbolically trapping the thumb by the rest of the fingers. It was designed intentionally as a single continuous hand movement, rather than a sign held in one position, so it could be made easily visible.
Hand signals are agreed gestures that people make with their hands or body to communicate in a non-verbal way. When used in traffic, hand signals are often used to convey driver's intention of their next movement. In some countries, hand signals can apply to any vehicle whose signal lights are missing or damaged.
[1] [4] That is, if a given munitions design has a CEP of 100 m, when 100 munitions are targeted at the same point, an average of 50 will fall within a circle with a radius of 100 m about that point. There are associated concepts, such as the DRMS (distance root mean square), which is the square root of the average squared distance error, a ...
R is the radius of the Earth, h is the height of the ground station, H is the height of the air station d is the line of sight distance In the case, when there are two stations involve, e.g. a transmit station on ground with a station height h and a receive station in the air with a station height H , the line of sight distance can be ...
"It is not a sign that he's the devil, but rather a warning off of evil spirits. It's a protective gesture against evil or darkness and illness." She added that putting one's hand one's stomach is ...
Other methods attempt to increase the signal-to-clutter ratio. Clutter moves with the wind or is stationary. Two common strategies to improve measure or performance in a clutter environment are: Moving target indication, which integrates successive pulses and; Doppler processing, which uses filters to separate clutter from desirable signals.
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