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. 02, 2018
Filed:
Apr. 18, 2017
Lockheed Martin Corporation, Bethesda, MD (US);
Billy D. Pettijohn, Mountain View, CA (US);
Erik Jan Paulley, San Jose, CA (US);
MacDaniel J. Radigan, Chandler, AZ (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A Least Mean Squares (LMS) polynomial estimator is disclosed. The LMS polynomial estimator may be a LMS moving window polynomial estimator capable of performing real-time polynomial estimation and evaluation of successive time derivatives of a function of a single variable up to a specified polynomial order. The estimator makes a unique use system memory that allows for the evaluation of the least squares normal equations with a very low computational footprint. This allows the estimator to be realizable in computationally-constrained environments such as embedded systems. The LMS polynomial estimator may be implemented in a frequency estimator for estimation of the phase, frequency, Doppler, delta Doppler, and/or higher order time derivatives of phase. Estimates may be performed in real time, running at the same rate as the inbound signal.