Apparatus, system and method for ultra-short range detection of obstacles

Abstract

The invention is entitled "Apparatus, System, and Method for Ultra-Short Range Detection of Obstacles." Embodiments include apparatus, systems, and methods for using a PAS sensor to facilitate ultra-short range detection of obstacles. A method can include obtaining a correlation of at least two characteristics of a transducer, determining a reverberation time required for a given transmission frequency and selecting the transducer, obtaining a damping ratio corresponding to the selected reverberation time, generating a ranging signal command, generating a damping signal command, and outputting each of the ranging signal command and the damping signal command. The ranging signal command can instruct the PAS sensor to drive the transducer to output a ranging signal at a given transmission frequency, a transmission amplitude, and a transmission phase, and the damping signal command causes the transducer reverberation caused by the ranging signal to be suppressed at a damping ratio. The damping ratio can be between thirty percent (30%) and eighty percent (80%) of the transmission amplitude.

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