Method of determining the position of a mobile unit

Patent 6618671 Issued on September 9, 2003. Estimated Expiration Date:

September 20, 2021. 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.

Abstract Claims Description Full Text

Patent References

Wide area differential GPS reference system and method
Patent #: 5621646
Issued on: 04/15/1997
Inventor: Enge, et al.

GPS receiver and method for processing GPS signals
Patent #: 5663734
Issued on: 09/02/1997
Inventor: Krasner

Apparatus and method using relative GPS positioning for aircraft precision approach and landing
Patent #: 5702070
Issued on: 12/30/1997
Inventor: Waid

GPS receiver utilizing a communication link
Patent #: 5841396
Issued on: 11/24/1998
Inventor: Krasner

GPS receiver utilizing a communication link
Patent #: 5874914
Issued on: 02/23/1999
Inventor: Krasner

Method and apparatus for global positioning system based cooperative location system
Patent #: 6043777
Issued on: 03/28/2000
Inventor: Bergman, et al.

Satellite positioning reference system and method
Patent #: 6411254
Issued on: 06/25/2002
Inventor: Moeglein, et al.

Method and system for GPS and WAAS carrier phase measurements for relative positioning
Patent #: 6469663
Issued on: 10/22/2002
Inventor: Whitehead, et al.

Infrastructure-aiding for satellite navigation receiver and method
Patent #: 6473030
Issued on: 10/29/2002
Inventor: McBurney, et al.

Method, apparatus and system for estimating user position with a satellite positioning system in poor signal conditions
Patent #: 6473694
Issued on: 10/29/2002
Inventor: Akopian, et al.

More ...

Inventors

Assignee

Koninklijke Philips Electronics N.V.

Application

No. 09/957128 filed on 09/20/2001

US Classes:

701/213, Using Global Positioning System (GPS)342/357.02, With accuracy enhancing701/214Means to improve accuracy of position or location

Examiners

Primary: Camby, Richard M.

Attorney, Agent or Firm

Gathman; Laurie E.

International Classes

G01S 5/14 (20060101)
G01S 5/00 (20060101)

Foreign Application Priority Data

2000-09-20 GB

Abstract

A method of determining the position of a mobile unit (MS1) having a GPS receiver (24) is disclosed. The method comprising the steps of measuring mobile unit pseudoranges at the mobile unit (MS1) using the GPS receiver (24); providing reference pseudoranges corresponding to a reference location situated remote from the mobile unit (BS1); and determining the position of the mobile unit (MS1) relative to the reference location (BS1) as a function of both the reference pseudoranges and the mobile unit pseudoranges.