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:
Feb. 25, 2014
Filed:
Feb. 14, 2012
Elizabeth A. Dakin, Great Falls, VA (US);
Priyavadan Mamidipudi, Bristow, VA (US);
Philip L. Rogers, Hume, VA (US);
Rupak Changkakoti, Haymarket, VA (US);
Daniel C. Dakin, Great Falls, VA (US);
Elizabeth A. Dakin, Great Falls, VA (US);
Priyavadan Mamidipudi, Bristow, VA (US);
Philip L. Rogers, Hume, VA (US);
Rupak Changkakoti, Haymarket, VA (US);
Daniel C. Dakin, Great Falls, VA (US);
Optical Air Data Systems, LLC, Manassas, VA (US);
Abstract
An all fiber optic laser based scanning system for real time terrain mapping under degraded visual conditions is disclosed. A laser output is modulated to achieve a desired pulse width and pulse repetition frequency (PRF) and the modulated signal is amplified. The amplified optical signals are split into N channels that correspond to N elements of an optically phased array that steers light by modulating the phase of light entering and exiting the optical system. By applying a linear phase shift across the beam's wave front, the light propagating along the system's optical axis is steered to an off-axis angle. A real time map of an underlying terrain is accomplished by sweeping the N channel array across the terrain while collecting range information from each scan grid.