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:
Jan. 11, 2005
Filed:
Sep. 30, 2002
Charles E. Nourrcier, Long Beach, CA (US);
Karen D. Wirtz, Long Beach, CA (US);
Stanley D. Brown, Redondo Beach, CA (US);
Colin N. Sakamoto, Redondo Beach, CA (US);
Angela K. Martinez, Pacific Palisades, CA (US);
Scott C. Johnson, Torrance, CA (US);
Charles E. Nourrcier, Long Beach, CA (US);
Karen D. Wirtz, Long Beach, CA (US);
Stanley D. Brown, Redondo Beach, CA (US);
Colin N. Sakamoto, Redondo Beach, CA (US);
Angela K. Martinez, Pacific Palisades, CA (US);
Scott C. Johnson, Torrance, CA (US);
Raytheon Company, Lexington, MA (US);
Abstract
The range of a threshold detection laser range finder is increased by adding a low cost Analog-to-Digital converter and sampling a portion of a reflected laser pulse. The slope of the sampled reflected laser pulse is calculated and the shape of the reflected laser pulse is inferred from known shapes. The center point of the inferred shape is approximated using a lookup table, and a correction value is calculated based on the center point of the inferred shape and the sampled portion. The correction value is applied to an uncorrected range estimate to arrive at an accurate estimate of the range of the object of interest.