The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2003
Filed:
Feb. 26, 2002
Mark A. Barnes, Madison, AL (US);
Soumya K. Nag, Huntsville, AL (US);
Herbert U. Fluhler, Madison, AL (US);
Time Domain Corporation, Huntsville, AL (US);
Abstract
A method of detecting objects reflecting impulse waveforms of generating a detection envelope by receiving a reflected waveform, delaying said waveform by a peak-to-zero delay (PZD) interval. The PZD interval is the time between a maximum energy displacement in the impulse waveform and an adjacent zero crossing. The reflected waveform and its delayed version are squared and then summed to create the envelope. If the envelope is to be defined in terms of voltage, the root of the sum of the squares may be found. Also a method for generating an image using the PZD interval in back-projection techniques is described wherein a sampling point is chosen on each of a plurality of reflected waveforms. The values of the samples are summed and the waveforms are delayed by the PZD interval and the values of the sampling points are again summed. The two sums are squared and added together to generate an image envelope.