area of uncertainty


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area of uncertainty

area of uncertaintyclick for a larger image
The area around the DR (dead reckoning) position within which, for a stated level of probability, the true position is considered to occur. Normally, the 50% level of probability is taken. The area of uncertainty is drawn as a rectangle centered around the GPI (ground position indicator) DR position whose sides are equal to 1% along the track and 3% across the track of the distance flown since resetting the GPI. In the case of air-plot DR position, it is a circle of radius of 8 NM/h for aircraft at TAS (true air speed) up to 250 knots and 20 NM/h at higher speeds.
References in periodicals archive ?
However, only one of these locations would be expected to lie within the area of uncertainty (see Figure 1).
Highlighting the area of uncertainty between restorative justice based on the notion of fault and "no-fault liability", MEPs suggest that research projects might be initiated on this subject.
It is that tiny area of uncertainty that the dramatic style exploits.
This remains an area of uncertainty and it probably will be prudent to assess Russian stability before pursuing further agreements.
Some issues are left which related to particular projects but the passage of the bills and the bills themselves put to rest an area of uncertainty," he said.
Another key area of uncertainty in March was the exchange rate.
An hour of GPS shutdown would expand the area of uncertainty to more than the size of Montana.
He was always in that area of uncertainty, and there was always something happening with the ball.
Along with the Autumn Spending Review, the announcement that One North East will cease to exist in 2012 is another area of uncertainty, especially as the region has benefited from the all-encompassing skills of the region's development agency.
19% stake in the club and is expected to mount a full takeover bid but that prospect is another area of uncertainty.