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:
Nov. 15, 2011
Filed:
Aug. 13, 2007
David G. Manzi, Tucson, AZ (US);
David G. Manzi, Tucson, AZ (US);
Raytheon Company, Waltham, MA (US);
Abstract
A transmitter, receiver and communication technique. The transmitter is adapted to interleave a first pseudo-noise sequence with a second pseudo-noise sequence to provide a third pseudo-noise sequence. The third sequence is transmitted and then received by the inventive receiver. The first and second sequences are chosen so that an XOR of the two sequences produces a third, known-valid pseudo-noise sequence. The receiver includes an arrangement for receiving and correlating the third pseudo-noise sequence to provide a measure of a frequency of the transmitted signal. The receiver further includes an arrangement for downconverting and filtering the received signal to provide a filtered complex signal. A complex multiplier is included for effecting a complex multiplication of the filtered complex signal with a delayed version of the filtered complex signal to provide a product. A correlator is included for correlating the product to provide the measure of frequency.