FR3103658B1 - Method for reducing multipath errors - Google Patents

Method for reducing multipath errors Download PDF

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Publication number
FR3103658B1
FR3103658B1 FR1913308A FR1913308A FR3103658B1 FR 3103658 B1 FR3103658 B1 FR 3103658B1 FR 1913308 A FR1913308 A FR 1913308A FR 1913308 A FR1913308 A FR 1913308A FR 3103658 B1 FR3103658 B1 FR 3103658B1
Authority
FR
France
Prior art keywords
signal
incident
determining
multipath type
correction
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.)
Active
Application number
FR1913308A
Other languages
French (fr)
Other versions
FR3103658A1 (en
Inventor
François-Xavier Marmet
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.)
Centre National dEtudes Spatiales CNES
Original Assignee
Centre National dEtudes Spatiales CNES
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 Centre National dEtudes Spatiales CNES filed Critical Centre National dEtudes Spatiales CNES
Priority to FR1913308A priority Critical patent/FR3103658B1/en
Priority to PCT/FR2020/052173 priority patent/WO2021105613A1/en
Priority to EP20820516.1A priority patent/EP4066020A1/en
Publication of FR3103658A1 publication Critical patent/FR3103658A1/en
Application granted granted Critical
Publication of FR3103658B1 publication Critical patent/FR3103658B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/22—Multipath-related issues
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/021—Calibration, monitoring or correction
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0218—Multipath in signal reception

Landscapes

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

Abstract

Un procédé de détermination d’un signal corrigé, permettant de réduire les erreurs liées aux trajets multiples comprenant notamment une étape de réception d’une pluralité de signaux incidents (12) en provenance d’une pluralité d’unités d’émission de signal, tel que chaque signal incident de la pluralité de signaux incidents est en provenance d’une unité d’émission de signal de la pluralité d’unités d’émission de signal et une étape de caractérisation d’au moins un signal incident (14) parmi la pluralité de signaux incident réceptionnés en tant qu’au moins un signal de type multi trajet. Le procédé comprend également une étape de détermination d’une échelle de correction (18) pour chacun des au moins un signal de type multi trajet caractérisé, tel que chacun des au moins un signal de type multi trajet a une échelle de correction attribuée ainsi qu’une étape de création d’un tableau de correction (22) dimensionné en fonction d’au moins un signal de type multi trajet estimés et de l’échelle de correction qui lui est attribuée, et enfin une étape de détermination d’au moins un signal corrigé (24) en fonction du tableau de correction. Figure 1A method for determining a corrected signal, making it possible to reduce the errors linked to the multipaths comprising in particular a step of receiving a plurality of incident signals (12) coming from a plurality of signal transmission units, such that each incident signal of the plurality of incident signals originates from a signal transmission unit of the plurality of signal transmission units and a step of characterizing at least one incident signal (14) among the plurality of incident signals received as at least one multipath type signal. The method also includes a step of determining a correction scale (18) for each of the at least one characterized multipath type signal, such that each of the at least one multipath type signal has an assigned correction scale as well as a step of creating a correction table (22) sized according to at least one estimated multipath type signal and the correction scale assigned to it, and finally a step of determining at least a corrected signal (24) according to the correction table. Figure 1

FR1913308A 2019-11-27 2019-11-27 Method for reducing multipath errors Active FR3103658B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1913308A FR3103658B1 (en) 2019-11-27 2019-11-27 Method for reducing multipath errors
PCT/FR2020/052173 WO2021105613A1 (en) 2019-11-27 2020-11-25 Method for reducing errors associated with multiple paths
EP20820516.1A EP4066020A1 (en) 2019-11-27 2020-11-25 Method for reducing errors associated with multiple paths

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1913308A FR3103658B1 (en) 2019-11-27 2019-11-27 Method for reducing multipath errors
FR1913308 2019-11-27

Publications (2)

Publication Number Publication Date
FR3103658A1 FR3103658A1 (en) 2021-05-28
FR3103658B1 true FR3103658B1 (en) 2022-09-02

Family

ID=69903335

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1913308A Active FR3103658B1 (en) 2019-11-27 2019-11-27 Method for reducing multipath errors

Country Status (3)

Country Link
EP (1) EP4066020A1 (en)
FR (1) FR3103658B1 (en)
WO (1) WO2021105613A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5717406A (en) * 1995-06-07 1998-02-10 Sanconix Inc. Enhanced position calculation
US6580771B2 (en) 2001-03-30 2003-06-17 Nokia Corporation Successive user data multipath interference cancellation
US6804494B2 (en) * 2001-06-11 2004-10-12 Qualcomm Inc. System and method for the detection and compensation of radio signal time of arrival errors
US7095813B2 (en) * 2002-05-16 2006-08-22 Qualcomm Incorporated System and method for the detection and compensation of radio signal time of arrival errors

Also Published As

Publication number Publication date
FR3103658A1 (en) 2021-05-28
WO2021105613A1 (en) 2021-06-03
EP4066020A1 (en) 2022-10-05

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