The present invention provides a method and apparatus for locating the position of a lightning strike free of topography-dependent error by calculating a ground point having a difference in propagation distance at receiving stations (R1, R2 and R3) in at least three different locations. The difference...http://www.google.com/patents/US6768946?utm_source=gb-gplus-sharePatent US6768946 - Lighting strike position locating method, apparatus, system and program
