Patent ID: 6232882
Filing Date: 2001-05-15
Classification: G01W,Y02A

Abstract:
A system for detecting tornadoes, comprising:a first RF receiving circuit adapted to be connected to an antenna and comprising a resonant circuit tuned to receive an RF signal at a first predetermined frequency;a second RF receiving circuit adapted to be connected to an antenna and comprising a resonant circuit tuned to receive an RF signal at a second predetermined frequency;memory means storing a pair of predetermined threshold values and an algorithm to distinguish between an electromagnetic signature of a tornado, intermittent electromagnetic signals and manmade signals; andprocessing means connected to said first and second RF receiving circuits, for receiving respective amplitude signals indicating amplitudes of the RF signals at said first and second predetermined frequencies, said processing means further comprising means for applying said algorithm to said amplitudes of the RF signals at said first and second frequencies to detect a tornado, said processing means further comprising means to emit a signal when said algorithm detects a tornado.