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. 07, 2011
Matthew J. Sherman, Succasunna, NJ (US);
Gary R. Lomp, Centerport, NY (US);
Andrew M. Comba, Little Falls, NJ (US);
David A. Haessig, Jr., Towaco, NJ (US);
Joel D. Reiss, Bloomfield, NJ (US);
Matthew J. Sherman, Succasunna, NJ (US);
Gary R. Lomp, Centerport, NY (US);
Andrew M. Comba, Little Falls, NJ (US);
David A. Haessig, Jr., Towaco, NJ (US);
Joel D. Reiss, Bloomfield, NJ (US);
BAE Systems Information and Electronics Systems Integration Inc., Nashua, NH (US);
Abstract
A system and method for calculating a time of arrival (TOA) of an electromagnetic signal is presented. A method receives a fast Fourier transform (FFT) signal that is a FFT of an original electromagnetic signal containing symbol data. The FFT signal is either multiplied or divided with a value to remove the symbol data. Removing the symbol data generates a perturbed data values representing perturbed signal with a perturbed covariance. The method calculates a perturbed covariance of the perturbed data values. After the perturbed covariance is calculated, the method at least partially corrects the perturbed covariance to produce a corrected covariance. The TOA of the original electromagnetic signal is calculated based, at least in part, on the perturbed covariance.