Lightning warning system
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United States of America Patent
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-
Jun 10, 1986
Grant Date -
N/A
app pub date -
Nov 7, 1983
filing date -
Nov 16, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for warning against lightning strikes, in which the rate of occurrence of ground flashes is determined and used as a criterion. The rate of occurrence of ground flashes in 0 to 5 kilometers, 5 to 10 kilometers and 10 to 20 kilometers is determined. In addition, the field intensity is used as a criterion. A series of time windows is generated, each time window starting when a ground flash occurs, and the number of flashes occurring in each time window is counted to determine the rate of occurrence. A criterion selection matrix is provided to select various criteria in different combinations to provide different alarm levels.
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