CA2971055C - Correction d'erreurs de phase dans un systeme d'imagerie a ouverture synthetique avec reglage de retard de l'oscillateur local - Google Patents

Correction d'erreurs de phase dans un systeme d'imagerie a ouverture synthetique avec reglage de retard de l'oscillateur local Download PDF

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Publication number
CA2971055C
CA2971055C CA2971055A CA2971055A CA2971055C CA 2971055 C CA2971055 C CA 2971055C CA 2971055 A CA2971055 A CA 2971055A CA 2971055 A CA2971055 A CA 2971055A CA 2971055 C CA2971055 C CA 2971055C
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Canada
Prior art keywords
signal
transmission
phase
phase error
imaging system
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Active
Application number
CA2971055A
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English (en)
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CA2971055A1 (fr
Inventor
Simon Turbide
Alain Bergeron
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Institut National d'Optique
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Institut National d'Optique
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Priority to CA2971055A priority Critical patent/CA2971055C/fr
Publication of CA2971055A1 publication Critical patent/CA2971055A1/fr
Application granted granted Critical
Publication of CA2971055C publication Critical patent/CA2971055C/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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S17/26—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves wherein the transmitted pulses use a frequency-modulated or phase-modulated carrier wave, e.g. for pulse compression of received signals
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • G01S17/90—Lidar systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques
    • 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
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/486—Receivers
    • 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
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/497—Means for monitoring or calibrating
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S17/34—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)

Abstract

Une méthode de correction derreur de phase dans un système dimagerie à ouverture synthétique est décrite. Un signal de transmission et un signal doscillateur local (LO) sont produits selon une temporisation relative, qui peut être ajustée en temps réel pour faire correspondre une distance à une région cible à imager. Une partie du signal de transmission de données est transmis sur la région cible et un signal de retour est reçu et mélangé avec une partie du signal de LO pour fournir un signal douverture synthétique brut. Les erreurs de phases de transmission et de LO associées respectivement aux signaux de transmission et de LO sont relevées, de même quune instabilité de fréquence entre les signaux de transmission et de LO. Un signal douverture synthétique corrigé en phase est obtenu par lapplication dune correction de phase au signal brut en fonction de lerreur de phase de transmission, lerreur de phase de LO et linstabilité de fréquence. Un système dimagerie à ouverture synthétique capable de mettre en uvre la méthode est aussi décrit.
CA2971055A 2017-02-17 2017-02-17 Correction d'erreurs de phase dans un systeme d'imagerie a ouverture synthetique avec reglage de retard de l'oscillateur local Active CA2971055C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2971055A CA2971055C (fr) 2017-02-17 2017-02-17 Correction d'erreurs de phase dans un systeme d'imagerie a ouverture synthetique avec reglage de retard de l'oscillateur local

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2971055A CA2971055C (fr) 2017-02-17 2017-02-17 Correction d'erreurs de phase dans un systeme d'imagerie a ouverture synthetique avec reglage de retard de l'oscillateur local

Publications (2)

Publication Number Publication Date
CA2971055A1 CA2971055A1 (fr) 2018-08-17
CA2971055C true CA2971055C (fr) 2021-03-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2971055A Active CA2971055C (fr) 2017-02-17 2017-02-17 Correction d'erreurs de phase dans un systeme d'imagerie a ouverture synthetique avec reglage de retard de l'oscillateur local

Country Status (1)

Country Link
CA (1) CA2971055C (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3089990C (fr) * 2019-08-20 2026-06-23 Institut National D'optique Methode et systeme de detection et d'imagerie a ouverture synthetique d'une cible
CN116559878A (zh) * 2023-06-05 2023-08-08 王辉 一种Ka波段VVD-SAR系统
CN117896017B (zh) * 2024-03-18 2024-06-07 西安晟昕科技股份有限公司 一种发射装置的信号检测分析方法

Also Published As

Publication number Publication date
CA2971055A1 (fr) 2018-08-17

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