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:
Jul. 05, 2016
Filed:
Sep. 23, 2013
Andrey Vladimirovich Veitsel, Moscow, RU;
Vladimir Victorovich Beloglazov, Moscow, RU;
Victor Abramovich Veitsel, Moscow, RU;
Andrey Vladimirovich Veitsel, Moscow, RU;
Vladimir Victorovich Beloglazov, Moscow, RU;
Victor Abramovich Veitsel, Moscow, RU;
Topcon Positioning Systems, Inc., Livermore, CA (US);
Abstract
A correction phase locked loop (CPLL), including a signal processing unit that receives a digitized input signal from a satellite, the signal processing unit comprising (a) a primary correlator and primary discriminator, connected in series and generating a main error signal Zfrom the digitized input signal; (b) a correction correlator and a correction discriminator connected in series and generating a correction signal Z; and (c) an adder for adding the main error signal Zand the correction signal Zto produce a common error signal Z. A loop filter filters the common error signal Z to produce a corrected error signal that is used for frequency-phase control of a Numerical Control Oscillator (NCO). The NCO generates two mutually orthogonal output reference signals whose phase is substantially free of multipath errors.