CA2012916A1 - Differential doppler velocity gps receiver - Google Patents

Differential doppler velocity gps receiver

Info

Publication number
CA2012916A1
CA2012916A1 CA2012916A CA2012916A CA2012916A1 CA 2012916 A1 CA2012916 A1 CA 2012916A1 CA 2012916 A CA2012916 A CA 2012916A CA 2012916 A CA2012916 A CA 2012916A CA 2012916 A1 CA2012916 A1 CA 2012916A1
Authority
CA
Canada
Prior art keywords
microcomputer
satellite
tracking
gps receiver
doppler velocity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2012916A
Other languages
French (fr)
Other versions
CA2012916C (en
Inventor
Paul E. Braisted
Ralph F. Eschenbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trimble Inc
Original Assignee
Paul E. Braisted
Ralph F. Eschenbach
Trimble Navigation, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paul E. Braisted, Ralph F. Eschenbach, Trimble Navigation, Ltd. filed Critical Paul E. Braisted
Publication of CA2012916A1 publication Critical patent/CA2012916A1/en
Application granted granted Critical
Publication of CA2012916C publication Critical patent/CA2012916C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
    • G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/52—Determining velocity

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

THE ABSTRACT
To reduce error introduced by the local oscillator in the velocity calculations, the receiver has two "tracking channels" and a microcomputer. With numbers required to, simultaneously, lock each of the "tracking channels" each to a respective satellite signal, the microcomputer employs a differential doppler technique to calculate the receiver velocity. The microcomputer calculates a number which represents the difference between the apparent doppler frequency shift of the carrier signal which is transmitted by the first "tracking channel" satellite and which is measured over a specific time period and the apparent doppler frequency shift of the carrier signal which is transmitted by the second "tracking channel" satellite and which is measured over substantially the same time period.
CA002012916A 1989-03-27 1990-03-23 Differential doppler velocity gps receiver Expired - Fee Related CA2012916C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/328,870 1989-03-27
US07/328,870 US4970523A (en) 1989-03-27 1989-03-27 Differential doppler velocity GPS receiver

Publications (2)

Publication Number Publication Date
CA2012916A1 true CA2012916A1 (en) 1990-09-27
CA2012916C CA2012916C (en) 1994-05-24

Family

ID=23282813

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002012916A Expired - Fee Related CA2012916C (en) 1989-03-27 1990-03-23 Differential doppler velocity gps receiver

Country Status (4)

Country Link
US (1) US4970523A (en)
EP (1) EP0389972A3 (en)
JP (1) JPH0328784A (en)
CA (1) CA2012916C (en)

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Publication number Priority date Publication date Assignee Title
US5198831A (en) * 1990-09-26 1993-03-30 501 Pronav International, Inc. Personal positioning satellite navigator with printed quadrifilar helical antenna
US20030103001A1 (en) * 1991-12-10 2003-06-05 Huston Charles D. Golf distance measuring system and method
SE513453C2 (en) * 1992-07-09 2000-09-18 Telia Ab Method and apparatus for spreading technology for suppressing ground-reflecting waves
SE469581B (en) * 1992-08-18 1993-07-26 Televerket PROCEDURE MAKES ESTIMATES OF TRAFFIC DENSITY IN THE MOBILE PHONE
US5440491A (en) * 1993-10-19 1995-08-08 Kabushiki Kaisha Toshiba Pseudo GPS signal transmitting system in a base station
JP3378360B2 (en) * 1994-06-30 2003-02-17 松下電器産業株式会社 Speed sensor coefficient calculation device
US5812591A (en) * 1994-09-23 1998-09-22 Garmin Corporation Dual conversion GPS frequency converter and frequency plan for same
US5897605A (en) * 1996-03-15 1999-04-27 Sirf Technology, Inc. Spread spectrum receiver with fast signal reacquisition
US6041280A (en) * 1996-03-15 2000-03-21 Sirf Technology, Inc. GPS car navigation system
US6125325A (en) 1996-04-25 2000-09-26 Sirf Technology, Inc. GPS receiver with cross-track hold
US5901171A (en) * 1996-03-15 1999-05-04 Sirf Technology, Inc. Triple multiplexing spread spectrum receiver
US6393046B1 (en) 1996-04-25 2002-05-21 Sirf Technology, Inc. Spread spectrum receiver with multi-bit correlator
JP2780697B2 (en) * 1996-03-22 1998-07-30 日本電気株式会社 Method and apparatus for acquiring synchronization in correlation demodulation
US6018704A (en) * 1996-04-25 2000-01-25 Sirf Tech Inc GPS receiver
US6917644B2 (en) * 1996-04-25 2005-07-12 Sirf Technology, Inc. Spread spectrum receiver with multi-path correction
US6198765B1 (en) 1996-04-25 2001-03-06 Sirf Technologies, Inc. Spread spectrum receiver with multi-path correction
US6047017A (en) * 1996-04-25 2000-04-04 Cahn; Charles R. Spread spectrum receiver with multi-path cancellation
US6249542B1 (en) 1997-03-28 2001-06-19 Sirf Technology, Inc. Multipath processing for GPS receivers
US6111541A (en) * 1997-05-09 2000-08-29 Sony Corporation Positioning system using packet radio to provide differential global positioning satellite corrections and information relative to a position
US6353743B1 (en) * 1997-05-09 2002-03-05 Sony Corporation Positioning system using packet radio to determine position and to obtain information relative to a position
US5952968A (en) * 1997-09-15 1999-09-14 Rockwell International Corporation Method and apparatus for reducing jamming by beam forming using navigational data
US5949374A (en) * 1997-12-15 1999-09-07 Trimble Navigation Limited Two-channel fast-sequencing high-dynamics GPS navigation receiver
US6353408B1 (en) 1998-03-31 2002-03-05 U.S. Philips Corporation Electronic navigation apparatus
US6411892B1 (en) * 2000-07-13 2002-06-25 Global Locate, Inc. Method and apparatus for locating mobile receivers using a wide area reference network for propagating ephemeris
US6282231B1 (en) 1999-12-14 2001-08-28 Sirf Technology, Inc. Strong signal cancellation to enhance processing of weak spread spectrum signal
US6351236B1 (en) * 2000-04-25 2002-02-26 Agilent Technologies, Inc. Combined GPS and CDMA in a mobile transceiver
US6718174B2 (en) * 2000-10-27 2004-04-06 Qualcomm Incorporated Method and apparatus for estimating velocity of a terminal in a wireless communication system
JP4154609B2 (en) 2004-07-30 2008-09-24 ソニー株式会社 Satellite signal reception processing apparatus and satellite signal reception processing method
US7908080B2 (en) 2004-12-31 2011-03-15 Google Inc. Transportation routing
US7511662B2 (en) * 2006-04-28 2009-03-31 Loctronix Corporation System and method for positioning in configured environments
US9097783B2 (en) 2006-04-28 2015-08-04 Telecommunication Systems, Inc. System and method for positioning using hybrid spectral compression and cross correlation signal processing
US11105883B2 (en) * 2018-07-25 2021-08-31 Denso International America, Inc. Circular polarized angle of arrival measurement system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797677A (en) * 1982-10-29 1989-01-10 Istac, Incorporated Method and apparatus for deriving pseudo range from earth-orbiting satellites
US4453165A (en) * 1983-01-03 1984-06-05 Sperry Corporation Differential Doppler receiver
US4578678A (en) * 1983-11-14 1986-03-25 The United States Of America As Represented By The United States National Aeronautics And Space Administration High dynamic global positioning system receiver
US4754465A (en) * 1984-05-07 1988-06-28 Trimble Navigation, Inc. Global positioning system course acquisition code receiver
US4751512A (en) * 1986-01-21 1988-06-14 Oceanonics, Inc. Differential navigation system for remote mobile users
US4928106A (en) * 1988-07-14 1990-05-22 Ashtech Telesis, Inc. Global positioning system receiver with improved radio frequency and digital processing

Also Published As

Publication number Publication date
US4970523A (en) 1990-11-13
EP0389972A3 (en) 1991-11-06
JPH0328784A (en) 1991-02-06
EP0389972A2 (en) 1990-10-03
CA2012916C (en) 1994-05-24

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