Patent ID: 6539291
Filing Date: 2003-03-25
Classification: G01S,G01W,Y02A

Abstract:
An aircraft-mounted air turbulence warning system for collecting air current data by using a measuring device mounted on an aircraft and for predicting a turbulent air current based on this data and issuing a warning, said aircraft-mounted air turbulence warning system comprising:a parent unit having: a precedent base for accumulating data notified from a plurality of child units; an element data determination unit for processing the data in the precedent base, turning it into element data based on a predetermined designation of a range that is subject to this processing, and storing the element data in a classification precedent base; an element data classification unit for creating an aggregation of element data based on results, which are written in the element data in the classification precedent base, of a determination as to whether the aircraft is to encounter air turbulence, classifying each element data aggregation to create a classification chart and recording this in the classification precedent base; an element data change classification unit for determining which classification the element data in the classification precedent base belongs to and describing this as a change chart in the classification precedent base, and based on this change chart, summing changes of a classification identifier of each aircraft classification identifier, and calculating transition probabilities among the classifications and describing these as a status transition chart in the classification precedent base; a display unit for displaying the change chart and the status transition chart; and wherein the classification precedent base stores the element data, the classification chart, the change chart and the status transition chart; and a child unit having: a measurement unit for collecting the air current data and notifying the data to the precedent base; a child unit element data determination unit for processing data collected by the measurement unit based on the range that was designated as being the subject of the processing and turning it into the element data, and outputting this to a child unit element data classification determination unit; wherein the child unit element data classification determination unit references a mixture distribution chart in the child unit classification precedent base, determining which element distribution in the mixture distribution chart each of the element data processed by the child unit element data determination unit should belong to and informing a child unit display unit of an element distribution identifier which it has determined; and also, referencing the status transition chart, obtaining transition probabilities from the element distribution to all of the element distributions, informing the child unit display unit of these transition probabilities, calculating a probability of encountering air turbulence based on the transition probabilities and whether or not the mixture distribution chart indicates an air turbulence encounter and informing this probability of encountering air turbulence to the child unit display unit; wherein the child unit classification precedent base makes a request to the classification precedent base and obtains the classification chart and the status transition chart, and provides these according to a request from the child unit element data classification determination unit; and wherein the child unit display unit displays the class element distribution, the transition probabilities and the probability of encountering air turbulence obtained from the child unit element data classification determination unit, and issues a warning in the case when the probability of encountering air turbulence satisfies predetermined conditions.