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:
Oct. 09, 2007
Filed:
Feb. 10, 2005
Stanislav I. Ionov, Calabasas, CA (US);
Stanislav I. Ionov, Calabasas, CA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
Optical techniques are disclosed for improving the range resolution of a radar system. An optical source produces chirped optical pulses whose frequency changes linearly with time, wherein the pulse duration is close to the repetition period (quasi cw radiation). The optical source illuminates the target that scatters a portion of the light back into collecting optics of the ladar's receiver. The delayed back-scattered optical waveform is mixed optically with a reference waveform in a non-linear medium to produce optical radiation at a new frequency. The spectral properties of the non-linearly generated light contains information about the distance to the target. Different approaches that may be chosen for non-linear optical mixing are disclosed including sum and difference frequency generation in non-linear crystals.