GB2256764B - Laser system with heterodyne detection - Google Patents

Laser system with heterodyne detection

Info

Publication number
GB2256764B
GB2256764B GB8708269A GB8708269A GB2256764B GB 2256764 B GB2256764 B GB 2256764B GB 8708269 A GB8708269 A GB 8708269A GB 8708269 A GB8708269 A GB 8708269A GB 2256764 B GB2256764 B GB 2256764B
Authority
GB
United Kingdom
Prior art keywords
laser system
heterodyne detection
heterodyne
detection
laser
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.)
Expired - Fee Related
Application number
GB8708269A
Other versions
GB2256764A (en
GB8708269D0 (en
Inventor
Jean Louis Meyzonnette
Remy Bertrand
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB8708269D0 publication Critical patent/GB8708269D0/en
Publication of GB2256764A publication Critical patent/GB2256764A/en
Application granted granted Critical
Publication of GB2256764B publication Critical patent/GB2256764B/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
    • 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
    • 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
    • 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

Landscapes

  • 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 Radar Systems And Details Thereof (AREA)
GB8708269A 1986-04-08 1987-04-07 Laser system with heterodyne detection Expired - Fee Related GB2256764B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8605015A FR2677456B1 (en) 1986-04-08 1986-04-08 HETERODYNE DETECTION LASER SYSTEM WITH REDUCTION OF EFFECTS OF INTERFERENCE LIGHT.

Publications (3)

Publication Number Publication Date
GB8708269D0 GB8708269D0 (en) 1992-09-16
GB2256764A GB2256764A (en) 1992-12-16
GB2256764B true GB2256764B (en) 1993-05-12

Family

ID=9334022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8708269A Expired - Fee Related GB2256764B (en) 1986-04-08 1987-04-07 Laser system with heterodyne detection

Country Status (3)

Country Link
DE (1) DE3711634A1 (en)
FR (1) FR2677456B1 (en)
GB (1) GB2256764B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402642C2 (en) * 1994-01-29 1995-11-23 Leuze Electronic Gmbh & Co Optoelectronic device for locating obstacles
SE504941C2 (en) * 1995-09-14 1997-06-02 Geotronics Ab Targeting method and apparatus
EP1596222B1 (en) * 2003-02-19 2010-06-16 Mitsubishi Denki Kabushiki Kaisha Laser radar
FR3117608B1 (en) * 2020-12-13 2022-12-16 Commissariat Energie Atomique lidar imaging system with heterodyne detection of the frequency modulated continuous wave (FMCW) type comprising a device for phase correction of the reference signal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394814A1 (en) * 1977-06-16 1979-01-12 Telecommunications Sa DEVICE FOR REMOVING VERY CLOSE PARASITIC ECHOES IN OPTICAL PULSE COMPRESSION RADARS
US4397549A (en) * 1981-03-27 1983-08-09 The United States Of America As Represented By The Secretary Of The Army Method for removal of LIDAR background backscattering by subtraction of multiple-delayed return signal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
M.Skolnik,"Radar handbook",1970,Mcgraw Hill,see pages 16.18-16.19 para. 16.7 and fig.13 *

Also Published As

Publication number Publication date
FR2677456B1 (en) 1993-10-29
GB2256764A (en) 1992-12-16
GB8708269D0 (en) 1992-09-16
DE3711634A1 (en) 1993-01-14
FR2677456A1 (en) 1992-12-11

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19940325

PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960407