WO1995027220A1 - Procede de sondage d'un canal - Google Patents

Procede de sondage d'un canal Download PDF

Info

Publication number
WO1995027220A1
WO1995027220A1 PCT/FR1995/000314 FR9500314W WO9527220A1 WO 1995027220 A1 WO1995027220 A1 WO 1995027220A1 FR 9500314 W FR9500314 W FR 9500314W WO 9527220 A1 WO9527220 A1 WO 9527220A1
Authority
WO
WIPO (PCT)
Prior art keywords
matrix
converted
binary element
sounding signal
samples
Prior art date
Application number
PCT/FR1995/000314
Other languages
English (en)
Inventor
Julien Caratori
Claude Goutelard
Original Assignee
Societe D'etudes Thematiques Et Des Idees 'set Id'
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 Societe D'etudes Thematiques Et Des Idees 'set Id' filed Critical Societe D'etudes Thematiques Et Des Idees 'set Id'
Priority to AU20756/95A priority Critical patent/AU679363B2/en
Priority to EP95913200A priority patent/EP0729589B1/fr
Priority to US08/553,502 priority patent/US5608408A/en
Priority to DE69524378T priority patent/DE69524378T2/de
Publication of WO1995027220A1 publication Critical patent/WO1995027220A1/fr

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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/0218—Very long range radars, e.g. surface wave radar, over-the-horizon or ionospheric propagation systems
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
    • G01S7/2927—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods by deriving and controlling a threshold value

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

Pour réduire la puissance d'émission, le sondage d'un canal comprend une transformation par changement d'espace (ET2) de M colonnes à N échantillons initiaux ayant des rangs temporels égaux dans N dernières réponses impulsionnelles d'un signal de sondage reçu à travers le canal, en une matrice transformée, une association (ET3) à la matrice transformée d'une matrice d'éléments binaires en dépendance des modules respectifs des échantillons de la matrice transformée par rapport à un seuil, un filtrage spatial (ET4) de la matrice d'éléments binaires en une matrice filtrée où chaque élément binaire représente la présence ou l'absence du signal de sondage dans l'échantillon initial associé, et un calcul (ET6) d'une réponse impulsionnelle en fonction seulement des échantillons transformés associés à des éléments de la matrice filtrée ayant des niveaux représentatifs de la présence du signal de sondage.
PCT/FR1995/000314 1994-03-31 1995-03-15 Procede de sondage d'un canal WO1995027220A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU20756/95A AU679363B2 (en) 1994-03-31 1995-03-15 Channel sounding method
EP95913200A EP0729589B1 (fr) 1994-03-31 1995-03-15 Procede de sondage d'un canal
US08/553,502 US5608408A (en) 1994-03-31 1995-03-15 Method of sounding a channel
DE69524378T DE69524378T2 (de) 1994-03-31 1995-03-15 Verfahren zum abtasten eines kanals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR94/03808 1994-03-31
FR9403808A FR2718250B1 (fr) 1994-03-31 1994-03-31 Procédé de sondage d'un canal.

Publications (1)

Publication Number Publication Date
WO1995027220A1 true WO1995027220A1 (fr) 1995-10-12

Family

ID=9461619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1995/000314 WO1995027220A1 (fr) 1994-03-31 1995-03-15 Procede de sondage d'un canal

Country Status (6)

Country Link
US (1) US5608408A (fr)
EP (1) EP0729589B1 (fr)
AU (1) AU679363B2 (fr)
DE (1) DE69524378T2 (fr)
FR (1) FR2718250B1 (fr)
WO (1) WO1995027220A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030156624A1 (en) * 2002-02-08 2003-08-21 Koslar Signal transmission method with frequency and time spreading
EP1708401B1 (fr) * 1999-08-10 2010-05-19 Nanotron Technologies GmbH Procédé de transmission avec étalement de fréquence et de temps coté émetteur
CN101563585B (zh) * 2006-12-21 2013-03-20 微-埃普西龙测量技术有限两合公司 被测物相对于传感器的位置和/或位置变化的测定方法及测定用的传感器装置
DE102007062862A1 (de) 2006-12-21 2008-07-10 Micro-Epsilon Messtechnik Gmbh & Co. Kg Verfahren und Sensoranordnung zum Bestimmen der Position und/oder Positionsänderung eines Messobjekts relativ zu einem Sensor
CN104392146A (zh) * 2014-12-09 2015-03-04 西安电子科技大学 基于scmp算法的欠定盲分离源信号恢复方法
US11181486B2 (en) * 2019-12-18 2021-11-23 Origin Wireless, Inc. Method, apparatus, and system for wireless material sensing
US11003987B2 (en) * 2016-05-10 2021-05-11 Google Llc Audio processing with neural networks
US11474230B2 (en) * 2018-10-26 2022-10-18 Metawave Corporation Method and apparatus for non-line-of-sight detection and coded radar signals

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291505A1 (fr) * 1973-07-11 1976-06-11 Labo Etud Transmis Ionospheriq Systeme de sondage ionospherique par codage multiple et correlation
DE3108594A1 (de) * 1981-03-06 1982-09-23 Siemens AG, 1000 Berlin und 8000 München Pulsdoppler-radarempfaenger
US4644356A (en) * 1984-10-31 1987-02-17 The United States Of America As Represented By The Secretary Of The Air Force Bistatic coherent radar receiving system
EP0334560A2 (fr) * 1988-03-25 1989-09-27 Sperry Marine Inc. Détecteur vidéo pour radar et appareil de poursuite d'une cible
EP0537841A1 (fr) * 1991-10-16 1993-04-21 Hollandse Signaalapparaten B.V. Dispositif pour l'observation et l'identification d'hélicoptères
AU651663B2 (en) * 1991-03-11 1994-07-28 Commonwealth Of Australia, The Back-scatter sounding

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1766881B1 (de) * 1968-08-03 1971-12-02 Electroacustic Gmbh Verfahren und Vorrichtung zur Echolotung kurzer Entfernungen
US4430653A (en) * 1979-11-02 1984-02-07 Conoco Inc. Earth probing radar system
FR2472753A1 (fr) * 1979-12-31 1981-07-03 Anvar Perfectionnements aux dispositifs de sondage par ultra-sons
US4937580A (en) * 1988-05-19 1990-06-26 Trustees Of Dartmouth College Geophysical radar apparatus and method
US5122805A (en) * 1991-02-06 1992-06-16 Radian Corporation Radio acoustic sounding system for remotely determining atmospheric temperature profiles
US5486833A (en) * 1993-04-02 1996-01-23 Barrett; Terence W. Active signalling systems
US5357253A (en) * 1993-04-02 1994-10-18 Earth Sounding International System and method for earth probing with deep subsurface penetration using low frequency electromagnetic signals

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291505A1 (fr) * 1973-07-11 1976-06-11 Labo Etud Transmis Ionospheriq Systeme de sondage ionospherique par codage multiple et correlation
DE3108594A1 (de) * 1981-03-06 1982-09-23 Siemens AG, 1000 Berlin und 8000 München Pulsdoppler-radarempfaenger
US4644356A (en) * 1984-10-31 1987-02-17 The United States Of America As Represented By The Secretary Of The Air Force Bistatic coherent radar receiving system
EP0334560A2 (fr) * 1988-03-25 1989-09-27 Sperry Marine Inc. Détecteur vidéo pour radar et appareil de poursuite d'une cible
AU651663B2 (en) * 1991-03-11 1994-07-28 Commonwealth Of Australia, The Back-scatter sounding
EP0537841A1 (fr) * 1991-10-16 1993-04-21 Hollandse Signaalapparaten B.V. Dispositif pour l'observation et l'identification d'hélicoptères

Also Published As

Publication number Publication date
EP0729589B1 (fr) 2001-12-05
FR2718250A1 (fr) 1995-10-06
AU2075695A (en) 1995-10-23
DE69524378D1 (de) 2002-01-17
AU679363B2 (en) 1997-06-26
DE69524378T2 (de) 2002-08-14
EP0729589A1 (fr) 1996-09-04
US5608408A (en) 1997-03-04
FR2718250B1 (fr) 1996-06-07

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