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:
Aug. 21, 2007
Filed:
Aug. 16, 1990
George Edward Matich, Basildon, GB;
David Henry Ramsey, Pitsea, GB;
Raymond John Walls, Chelmsford, GB;
George Edward Matich, Basildon, GB;
David Henry Ramsey, Pitsea, GB;
Raymond John Walls, Chelmsford, GB;
Selex Sensors and Airborne Systems Limited, Basildon, Essex, GB;
Abstract
A continuous wave ranging system, comprising a modulatorfor modulating an r.f. carrier wave in accordance with a pseudo random code, a transmitting antennafor radiating the modulated signal towards a target, a receiving antennaand receiverfor detecting the signal reflected back from the target, a correlatorfor correlating the reflected signal with the transmitted code with a selected phase shift corresponding to the current range gate to be tested, whereby the range of the target from the system may be determined, a storecontaining a plurality of different pseudo random codes, and selector meansarranged to supply to the modulatorand to the correlatora code from the storewhich code does not produce a breakthrough sidelobe in at least the next range gate or gates to be tested.