BE747836A - Dispositif permettant de determiner la distance entre un objet et un endroit determine a l'aide de rayons emis par un - Google Patents

Dispositif permettant de determiner la distance entre un objet et un endroit determine a l'aide de rayons emis par un

Info

Publication number
BE747836A
BE747836A BE747836DA BE747836A BE 747836 A BE747836 A BE 747836A BE 747836D A BE747836D A BE 747836DA BE 747836 A BE747836 A BE 747836A
Authority
BE
Belgium
Prior art keywords
distance
rays emitted
device allowing
determined place
place
Prior art date
Application number
Other languages
English (en)
French (fr)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BE747836A publication Critical patent/BE747836A/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02055—Reduction or prevention of errors; Testing; Calibration
    • G01B9/02075—Reduction or prevention of errors; Testing; Calibration of particular errors
    • G01B9/02078—Caused by ambiguity
    • G01B9/02079—Quadrature detection, i.e. detecting relatively phase-shifted signals
    • G01B9/02081—Quadrature detection, i.e. detecting relatively phase-shifted signals simultaneous quadrature detection, e.g. by spatial phase shifting
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/70—Using polarization in the interferometer

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
BE747836D 1969-03-25 1970-03-23 Dispositif permettant de determiner la distance entre un objet et un endroit determine a l'aide de rayons emis par un BE747836A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6904621A NL6904621A (cs) 1969-03-25 1969-03-25

Publications (1)

Publication Number Publication Date
BE747836A true BE747836A (fr) 1970-09-23

Family

ID=19806529

Family Applications (1)

Application Number Title Priority Date Filing Date
BE747836D BE747836A (fr) 1969-03-25 1970-03-23 Dispositif permettant de determiner la distance entre un objet et un endroit determine a l'aide de rayons emis par un

Country Status (5)

Country Link
BE (1) BE747836A (cs)
CH (1) CH520319A (cs)
FR (1) FR2035878B1 (cs)
GB (1) GB1308957A (cs)
NL (1) NL6904621A (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2468099A1 (fr) * 1979-10-17 1981-04-30 Anvar Procede et appareil d'interferometrie laser a deux longueurs d'ondes
DD201191B1 (de) * 1981-09-24 1987-07-15 Ilmenau Tech Hochschule Kippinvariantes interferometer mit ebenen spiegeln
GB2127960B (en) * 1982-09-29 1985-12-11 British Aerospace Ring laser gyroscope readout arrangements
GB2129124B (en) * 1982-10-16 1985-12-11 Ferranti Plc Aligning mask with body
GB2256480B (en) * 1991-06-05 1995-02-01 Marconi Gec Ltd Improvements to optical sensors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1086053A (fr) * 1953-07-02 1955-02-09 Csf Perfectionnements aux systèmes de télémétrie à modulation de fréquence
US3366954A (en) * 1966-11-04 1968-01-30 Air Force Usa Spectrographical range finder
AU409380B2 (en) * 1966-12-06 1971-01-07 Improvements in or relating to optical mixing devices

Also Published As

Publication number Publication date
DE2012946B2 (de) 1975-07-24
FR2035878A1 (cs) 1970-12-24
FR2035878B1 (cs) 1974-09-20
NL6904621A (cs) 1970-09-29
DE2012946A1 (de) 1970-10-01
GB1308957A (en) 1973-03-07
CH520319A (de) 1972-03-15

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