FR3100893B1 - Méthode d’estimation de distance dans un réseau lpwa et méthode d’estimation de position associée - Google Patents

Méthode d’estimation de distance dans un réseau lpwa et méthode d’estimation de position associée Download PDF

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Publication number
FR3100893B1
FR3100893B1 FR1910165A FR1910165A FR3100893B1 FR 3100893 B1 FR3100893 B1 FR 3100893B1 FR 1910165 A FR1910165 A FR 1910165A FR 1910165 A FR1910165 A FR 1910165A FR 3100893 B1 FR3100893 B1 FR 3100893B1
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France
Prior art keywords
distance
node
estimation method
nodes
round
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FR1910165A
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English (en)
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FR3100893A1 (fr
Inventor
Florian Wolf
Rivaz Sébastien De
François Dehmas
Jean-Pierre Cances
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Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Priority to FR1910165A priority Critical patent/FR3100893B1/fr
Publication of FR3100893A1 publication Critical patent/FR3100893A1/fr
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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
    • 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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/84—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted for distance determination by phase measurement
    • 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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • G01S13/876—Combination of several spaced transponders or reflectors of known location for determining the position of a receiver
    • 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
    • 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
    • G01S5/0273—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 using multipath or indirect path propagation signals in position determination
    • 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
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • 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
    • G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S2205/01—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations specially adapted for specific applications

Abstract

La présente invention concerne une méthode d’estimation de distance entre nœuds d’un réseau LPWA. Un premier nœud (resp. un second nœud) émet une séquence de symboles pilotes au moyen de signaux à bande étroite successivement sur une pluralité de fréquences porteuses (410). Le second (resp. le premier) nœud reçoit les signaux émis et les démodule en bande de base puis les corrèle avec la séquence émise (420). Des valeurs complexes représentatives d’une fonction de transfert aller-retour du canal de transmission entre les deux nœuds sont obtenues (430,440) puis soumises à une IDFT pour fournir une réponse impulsionnelle aller-retour (450) du canal. On détermine alors une fenêtre temporelle se terminant en un temps caractéristique de la distribution temporelle de la réponse impulsionnelle aller-retour (460,470) et l’on recherche au sein de cette fenêtre temporelle le premier instant où un seuil prédéterminé est franchi par l’amplitude de ladite réponse impulsionnelle (480) pour obtenir une estimation de la distance entre les deux nœuds (490). Optionnellement, la méthode fournit une métrique de confiance de l’estimation de distance obtenue. L’invention concerne enfin une méthode d’estimation de position d’un nœud utilisant la méthode d’estimation de distance précitée. Figure pour l’abrégé : Fig. 4.
FR1910165A 2019-09-13 2019-09-13 Méthode d’estimation de distance dans un réseau lpwa et méthode d’estimation de position associée Active FR3100893B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1910165A FR3100893B1 (fr) 2019-09-13 2019-09-13 Méthode d’estimation de distance dans un réseau lpwa et méthode d’estimation de position associée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1910165 2019-09-13
FR1910165A FR3100893B1 (fr) 2019-09-13 2019-09-13 Méthode d’estimation de distance dans un réseau lpwa et méthode d’estimation de position associée

Publications (2)

Publication Number Publication Date
FR3100893A1 FR3100893A1 (fr) 2021-03-19
FR3100893B1 true FR3100893B1 (fr) 2022-12-09

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FR1910165A Active FR3100893B1 (fr) 2019-09-13 2019-09-13 Méthode d’estimation de distance dans un réseau lpwa et méthode d’estimation de position associée

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FR (1) FR3100893B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3110318B1 (fr) * 2020-05-13 2022-04-29 Commissariat Energie Atomique Méthode de localisation d’un objet connecté par différences de phase d’arrivée dans un réseau lpwa

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7577446B2 (en) * 2006-08-03 2009-08-18 Ntt Docomo, Inc. Weighted least square localization method exploiting multipath channel statistics for non-line-of-sight mitigation

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