Patent ID: 8368551
Filing Date: 2013-02-05
Classification: G01S

Abstract:
1. A method of detecting motion in components that form part of a structure, the method comprising: flooding a first component with transmitted radio frequency signals; receiving reflected radio frequency signals from the first component with an antenna; generating a first set of intermediate frequency signals based on differences between the transmitted radio frequency signals and the reflected radio frequency signals; measuring the first set of intermediate frequency signals; flooding a second component with transmitted radio frequency signals; receiving reflected radio frequency signals from the second component with an antenna; generating a second set of intermediate frequency signals based on differences between the transmitted radio frequency signals and the additional reflected radio frequency signals; measuring the second set of intermediate frequency signals, and wherein flooding a first component with transmitted radio frequency signals includes placing an indicator on the first component that identifies where the transmitted radio frequency signals are directed, and flooding a second component with transmitted radio frequency signals includes placing an indicator on the second component that identifies where the transmitted radio frequency signals are directed, and wherein placing an indicator on the first component that identifies where the transmitted radio frequency signals are directed includes projecting a beam of light onto the first component, and wherein placing an indicator on the second component that identifies where the transmitted radio frequency signals are directed includes projecting a beam of light onto the second component, and wherein projecting a beam of light onto the first component includes aligning a light emitting device relative to a radar that floods the first component with transmitted radio frequency signals, and projecting a beam of light onto the second component includes aligning a light emitting device relative to the radar that floods the second component with transmitted radio frequency signals.