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. 24, 2012
Filed:
Jul. 18, 2007
Arthur H. Carrieri, Abingdon, MD (US);
Erik S. Roese, Baltimore, MD (US);
David J. Owens, Kingsville, MD (US);
Jonathan C. Schultz, Perryville, MD (US);
Michael V. Talbard, BelAir, MD (US);
Pascal I. Lim, Baltimore, MD (US);
Kevin C. Hung, Baltimore, MD (US);
Jerold R. Bottiger, Aberdeen, MD (US);
Arthur H. Carrieri, Abingdon, MD (US);
Erik S. Roese, Baltimore, MD (US);
David J. Owens, Kingsville, MD (US);
Jonathan C. Schultz, Perryville, MD (US);
Michael V. Talbard, BelAir, MD (US);
Pascal I. Lim, Baltimore, MD (US);
Kevin C. Hung, Baltimore, MD (US);
Jerold R. Bottiger, Aberdeen, MD (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
An optomechanical switching device, a control system, and a graphical user interface for a photopolarimetric lidar standoff detection that employs differential-absorption Mueller matrix spectroscopy. An output train of alternate continuous-wave COlaser beams [ . . . L:L. . . ] is directed onto a suspect chemical-biological (CB) aerosol plume or the land mass it contaminates (S) vis-à-vis the OSD, with L[L] tuned on [detuned off] a resonant molecular absorption moiety of CB analyte. Both incident beams and their backscattered radiances from S are polarization-modulated synchronously so as to produce gated temporal voltage waveforms (scattergrams) recorded on a focus at the receiver end of a sensor (lidar) system. All 16 elements of the Mueller matrix (M) of S are measured via digital or analog filtration of constituent frequency components in these running scattergram data streams (phase-sensitive detection). A collective set of normalized elements {} (ratio to M) susceptible to analyte, probed on-then-off its molecular absorption band, form a unique detection domain that is scrutinized; i.e., any mapping onto this domain by incoming lidar data—by means of a trained neural network pattern recognition system for instance—cues a standoff detection event.