U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

GPS receiver

Patent 5459473 Issued on October 17, 1995. Estimated Expiration Date: Icon_subject November 22, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

High dynamic global positioning system receiver
Patent #: 4578678
Issued on: 03/25/1986
Inventor: Hurd

Method of doppler searching in a digital GPS receiver
Patent #: 4701934
Issued on: 10/20/1987
Inventor: Jasper

Global position system receiver
Patent #: 4807256
Issued on: 02/21/1989
Inventor: Holmes ,   et al.

Efficient detection and signal parameter estimation with application to high dynamic GPS receiver
Patent #: 4959656
Issued on: 09/25/1990
Inventor: Kumar

Multistage estimation of received carrier signal parameters under very high dynamic conditions of the receiver
Patent #: 5019824
Issued on: 05/28/1991
Inventor: Kumar

Sequencer for a shared channel global positioning system receiver
Patent #: 5192957
Issued on: 03/09/1993
Inventor: Kennedy

High performance global positioning system receiver means and method Patent #: 5223843
Issued on: 06/29/1993
Inventor: Hutchinson

Inventors

Assignee

Application

No. 050306 filed on 11/22/1993

US Classes:

342/357.12, GPS receiver signal processing375/149, Having specific code synchronization375/150, Correlation-type receiver375/152Matched-filter-type receiver

Examiners

Primary: Issing, Gregory C.

Attorney, Agent or Firm

Foreign Patent References

  • 2241799 GB. 09/13/1991

International Classes

G01S 005/02
H04B 007/185
H04B 015/00

Abstract

A GPS receiver for use with the NAVSTAR global, satellite based radio navigation and time transfer system wherein transmission from each of a plurality of satellites, includes C/A code signals comprising a code and data modulated carrier, said receiver comprising means for receiving C/A code signals transmitted from at least four satellites and means to process the signals including an open loop estimator of signal parameters for phase-coherent estimation of a plurality of signal parameters including code delay, carrier frequency, carrier phase, carrier phase acceleration, data value and data delay.

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